Aleksander Stojanowski

@stojanowski.dev

169 Followers 370 Following

#IndieHacker working on @letspark.it

The new app icon for the Spark habit tracker, featuring a modern Liquid Glass design with a stylized flame in vibrant orange and yellow gradients, enclosed in a rounded square with a subtle shadow.
Two smartphones displaying the "Write a Journal" habit in the Spark habit tracker app. The left phone shows a detailed monthly calendar view for September, highlighting completed days with blue circles. The right phone displays a summary view with a grid of completion dots for June, July, August, and September, emphasizing the 59-day streak and a 3-day streak type. Both screens use a dark theme with purple and blue accents.
A person holding an iPad displaying the "Awe dropping. Apple Event Bingo" board, featuring a grid of iconic Apple product announcements and features, such as "iPhone 17 Announced," "Apple Watch Ultra 3," "120Hz Display," and "Pro iPhones Return to Aluminum Case." The iPad screen shows a colorful, interactive bingo game. In the background, a TV displays the Apple logo with a vibrant, swirling effect. The scene is set in a room with light-colored walls and a window.
An email notification from App Store Connect addressed to Aleksander Stojanowski, stating that the status of the submitted app has changed to "Waiting for Review."
A fragment of the iOS habit tracker app, Spark, showing the "Habits" section. The screenshot displays two habit categories under "Side Hustle": "Work on side project" with a 125-day streak and "BuildInPublic" (hashtagged as #BuildInPublic) with a 171-day streak. Each habit includes a weekly progress tracker for the last 7 days, with today marked as Monday. The "Work on side project" habit is visually represented with green circles, while the "#BuildInPublic" habit uses blue circles. Both habits show consistent completion over the past week excluding last day.
A code change summary notification showing that 31 files were changed, with 295 lines added and 453 lines removed.
Two smartphone screens displaying the detail views of the "Write a Journal" habit in the Spark app. The left screen shows the updated design where the label has been changed from "Brief" to "Reason," and the calendar now reflects not only the current streak but also the full history of completed days. The right screen displays the previous design with the "Brief" label and a calendar that primarily highlighted the current streak. Both screens show monthly progress for May, June, July, and August.
Two smartphone screens displaying the final version of the onboarding flow for the iOS habit tracker app, Spark. The left screen shows a welcome message with a flame logo and three key points: building better habits one spark at a time, tracking progress to stay motivated, and using iCloud sync to keep habits close. There is a prominent red "Let's start" button at the bottom with a subtle shadow separating it from the background. The right screen is titled "Reminders" and explains that the app will send gentle reminders to help users stay on track with their habits. It includes an example notification and mentions follow-up reminders that can be disabled in settings. This screen also features a red "Enable notifications" button with a similar shadow effect, and an option to choose "Later."
A screenshot of a smartphone displaying a paywall for the Spark+ subscription within RevenueCat's paywall design tool. The paywall offers two subscription options: a yearly plan at $5.83 per month, billed annually at $69.99, and a monthly plan at $9.99 per month. The screen includes a flame logo, a list of features such as thousands of curated recipes, a vibrant private community, new recipe recommendations, and priority support. There is a red button labeled "Subscribe now!" and links to restore purchases, terms, and privacy policy. The screenshot is framed within a preview interface showing the language set to English (United States) and a zoom level of 0.6x.
Two smartphone screens displaying the current and new design of the Spark iOS habit tracker app. The left screen shows the current design with more shadows under elements, a logo, and less vibrant colors. The right screen displays the new design with less pronounced shadows, more coherent and vibrant colors, and the logo replaced with a "Habits" label. Both screens feature habit tracking categories such as Morning Exercise, Drink Water, Meditation, and Write a Journal, each with progress indicators and weekly tracking.
A smartphone screen displaying the second screen from the onboarding flow of the Spark iOS habit tracker app. The screen is titled "Reminders" and explains that the app will send gentle reminders to help users stay on track with their selected habits. An example notification is shown with the text "Go for a run. Stay on track! Have you logged your progress today?" The screen also mentions that users will receive follow-up reminders if they miss an entry, which can be disabled in the settings. There is a red button labeled "Enable notifications" and an option to choose "Later."
Three smartphone screens displaying different views of the Spark iOS habit tracker app. The left screen shows the welcome screen in the onboarding flow with a flame logo and a "Let's start" button. The middle screen displays the paywall for Spark+ subscription, offering a 12-month plan at $19.99 per year and a 1-month plan at $1.99 per month, both with free trial options. The right screen shows the current design of the main view of the Spark app, featuring various habit tracking categories such as Morning Exercise, Drink Water, Meditation, and Write a Journal, each with progress indicators and weekly tracking.
A smartphone screen displaying a paywall for the Spark+ subscription in the Spark iOS habit tracker app. The paywall offers two subscription options: a 12-month plan at $19.99 per year ($1.67 per month) after a 1-week free trial, and a 1-month plan at $1.99 per month after a 3-day free trial. The screen includes a flame logo at the top, a list of features such as tracking unlimited habits, customizing habit colors, and staying on top of goals. There is a red button prompting users to start their 1-week free trial. Links to restore purchases, terms and conditions, and the privacy policy are provided at the bottom.
Two smartphone screens displaying the welcome view of an iOS habit tracker app called Spark. The left screen shows the current design with a flame logo image, smaller icons, and text elements that are not aligned. The right screen shows the redesigned version with a flame symbol instead of the logo image, larger and colorful icons, and aligned text elements.
A dialog box on a computer screen displaying a confirmation message that an app upload is complete. The app named "Spark 1.7" has been successfully uploaded. The dialog box includes a green check mark, options to "Show in App Store Connect," and buttons labeled "Cancel," "Export," "Previous," and "Done." The background features a gradient of colors including green, blue, and red.
Three iPhone mockups showing the detailed view of the “Write a Journal” habit across different UI versions. Each phone displays a dark interface with purple gradient backgrounds. The screens show “Write a Journal” as the title with “59 days” streak and “3 days” goal indicators. Below is a brief description: “Reflect on your day by writing a journal entry before bed.” The main content area features a calendar grid view showing four months (April, May, June, July) with circular dots indicating completion status - purple dots for completed days and gray dots for incomplete days. The layout demonstrates consistent completion patterns across the months. A “More” button appears in the top right, and navigation elements are visible at the bottom. The progression from left to right shows subtle design refinements while maintaining the same core functionality and data visualization approach.
Three iPhone mockups displaying the evolution of Spark habit tracking app’s main interface. The leftmost phone shows the current UI with a sight gradient background from white to red. The screen displays “Spark+” branding and four habits: Morning Exercise (pink, 1 day streak, 2 days goal), Drink Water (orange, 1 day streak, 1 day goal), Meditation (green, 1 day streak, 1 day goal), and Write a Journal (red, 59 days streak, 3 days goal). Each habit shows a row of circular day indicators (S S M T W T F) with completed days highlighted in the habit’s color. The middle phone shows a refreshed UI with “Habits” as the title and refined visual elements, maintaining the same habit structure but with cleaner typography and spacing. The rightmost phone displays the iOS 26 Beta version with further design refinements, featuring more polished gradients and updated interface elements while preserving the core functionality and layout.
Two iPhone screenshots of the Spark habit tracker app side by side against a colorful gradient. Both show dark-themed interfaces with “Habits” headers and 09:41 time stamps. Left Screenshot (Updated): Features elevated category headers more separated from habit lists. “HEALTH” header appears prominently spaced above habit cards, demonstrating the design change where group headers are decoupled from habits. Shows “Morning Exercise” (pink theme) and “Drink Water” (yellow theme) with weekly progress circles. Also visible “MINDFULNESS” and “OTHERS” sections, including “Read a Book” habit (purple theme). Right Screenshot (Previous): Category headers positioned closer to habit lists. Same habits visible plus Both screens feature circular daily progress indicators (F-T) with completed days highlighted in each habit’s color. Bottom navigation shows “Habits” and “Settings” tabs, with “Habits” being selected.
A macOS system dialog box with a dark gray background displaying an error message. At the top is a yellow warning triangle icon with an exclamation mark. The main heading reads “Xcode quit unexpectedly.” Below that is explanatory text stating “Click Reopen to open the application again. Click Report to see more detailed information and send a report to Apple.” Three action buttons are arranged vertically: - A blue “Reopen” button at the top - A gray “Report…” button in the middle - A gray “Ignore” button at the bottom In the top-right corner of the dialog is a small circular question mark icon, likely for help or additional information. The dialog appears to be the standard macOS crash report interface that appears when an application terminates unexpectedly.
iPhone displaying the experimental UI of the Spark habit tracker app. The main screen titled “Habits” lists four color-coded habits in a scrollable view, each within soft-colored rectangles (pink, orange, yellow, green). Each habit row shows a habit icon, name, a 7-day cycle, and a scheduled reminder time. Circular day buttons for each week are used: vibrant-colored circles indicate habit completions, pause symbols in circles mark days when the user took a break, and faint-colored circles represent days within the ongoing streak. The navigation bar at the bottom features “Habits” and “Settings” tabs. The design uses a modern, high-contrast Apple-like style with smooth gradients and clear iconography, supporting habit tracking clarity and accessibility.
Side-by-side iPhone screenshots comparing designs of the Spark habit tracker app. Left: Updated version with ‘Habits’ header text, vibrant pastel colors, icon backgrounds, and habits including Morning Exercise, Drink Water, Mindfulness Meditation, and Write a Journal, each with weekly progress circles. Right: Current version featuring the Spark logo header, gradient color scheme with less vibrancy, no icon backgrounds, and similar habits like Morning Exercise, Drink Water, Meditation, and Write a Journal, shown with progress indicators.
Two iPhones display the Spark habit tracker app’s experimental user interface side by side. The left phone shows the app in light mode, with a white background and pastel-colored cards for each habit. Each card lists a habit’s name, streak information, and a row of circular weekday icons (T, W, T, F, S) in blue and purple tones. The right phone displays the same UI in dark mode, featuring a black background and deeper blue, teal, and purple accents. Both screens have a prominent “Habits” title at the top, a plus button for adding new habits, and a bottom navigation bar with “Habits” and “Settings” icons. The visual style is clean, modern, and minimal, highlighting habit progress and daily tracking.
Two iPhones display the Spark habit tracker app with a soft gradient background. The app interface is shown in two states: - Left Phone: The navigation title at the top reads “Spark+” with a flame icon, and the “Mindfulness” group card is folded. The chevron on that card points to the right, indicating the group is collapsed. - Right Phone: The navigation title at the top simply reads “Habits” in bold text, and the “Mindfulness” group card is folded. The chevron on that card points upward, indicating the group is collapsed. Both screens display habit cards for “Morning Exercise,” “Drink Water,” and “Read a Book,” with colored day markers and icons. The bottom navigation bar includes tabs for “Habits” and “Settings.” The key differences are the navigation title text and the direction of the chevron on the group card that is being folded or unfolded.
Screenshot from the iOS simulator displaying the Spark habit tracker app icons in three modes: tinted, dark, and light. In each screenshot, the left column shows the old icons and the right column shows the new, subtly updated icons. Both columns are visible side by side for direct comparison. Some icons in the bottom right corner feature diagonal stripes, indicating debug versions of the app. The design changes between old and new icons are subtle but noticeable, such as refined shapes or color tweaks, and are consistently shown across all three interface modes.
A screenshot from the Astro application showing a table with two columns labeled “Popularity” and “Difficulty.” Each row displays a numerical value and a corresponding horizontal yellow progress bar. The “Popularity” values are 48, 40, 37, 31, and 27. The “Difficulty” values are 50, 51, 53, 52, and 52. The progress bars visually represent the magnitude of each value. The table has a dark background.
A smartphone displaying a habit-tracking app screen with the title “Create habit.” The interface includes fields for entering the habit name and a brief description, options to set the frequency (defaulted to “Daily”), and to assign the habit to a group. There is also a section for selecting an icon, followed by a blurred area with the text “Unlock all features with Spark+.” At the bottom, there is a prominent red “Save” button. The phone is tilted slightly to the left and is set against a vibrant gradient background transitioning from orange to pink to purple.
Two square app icons are displayed side by side on a vibrant pink-orange gradient background. On the left is the current icon for the Spark habit tracker app, featuring a stylized flame with a red-to-yellow gradient, where the flame and its base are slightly asymmetrical. On the right is an updated version of the same icon, now more symmetrical and featuring a smoother, subtly different red-to-yellow gradient.
On a vibrant, abstract red and purple iOS home screen, two app icons for Spark are displayed in the upper left. Both icons feature a stylized flame in orange and red on a glossy, dark background, giving them a glass-like, liquid appearance. The left icon represents the standard Spark app, while the right icon, marked with a diagonal yellow-and-black caution stripe in the lower right corner, denotes the Spark dev version. Both icons exhibit pronounced reflections and subtle highlights, emphasizing their translucent, glass-inspired design that stands out against the colorful background.
Two iPhones display the Spark+ habit tracker app side by side. The phone on the left shows the current version designed for iOS 18, while the phone on the right displays the same app running on iOS 26 without any design updates. Both screens feature a light pink gradient background with three habit cards labeled “Test 1,” “Test 2,” and “Test 3,” each showing tracked days and times. Key differences in the liquid glass design language are visible: on iOS 18 (left), the bottom navigation tabs (“Habits” and “Settings”) and the top bar (with the app title, logo, and buttons) have a flat, minimal appearance. On iOS 26 (right), the same elements adopt a liquid glass style—bottom tabs and the top bar appear more translucent, with rounded, frosted-glass effects and subtle shadows, making buttons and titles seem to float above the background. This highlights the more tactile, layered look of iOS 26 compared to the flatter design of iOS 18.
Two smartphones display the “Spark+” habit-tracking app on a purple gradient background. The left phone shows the main dashboard with two habits: “Eat healthy” (carrot icon) and “Read for 30-minutes” (books icon). For “Read for 30-minutes,” the app displays a 7-day streak and a frequency of 2 days, along with the past seven days marked by purple circles for each completed day. In contrast, “Eat healthy” does not show any streak or frequency information—only the days of the week with colored circles indicating completion. The right phone shows a detailed history for “Eat healthy,” featuring monthly calendars (March, April, May, June) filled with dots for each completed day, but again, no streak or frequency data is present for this habit. The app uses a dark red and black color scheme, with navigation tabs for “Habits” and “Settings” at the bottom of both screens.
Three iPhones display the Spark habit tracker app for iOS. The left screen shows the “Edit habit” page for Meditation, allowing users to set frequency, group, icon, color, and reminders. The center screen displays the main dashboard with habits like Morning Exercise, Drink Water, Meditation, and Write a Journal, each with colored circles indicating completion for each day of the week. The right screen presents detailed tracking for the “Write a Journal” habit, with a calendar view showing daily completion dots for February through May. The app uses a dark mode interface with colorful highlights for different habits.
Two smartphones display a habit-tracking app called “Spark.” The left phone shows a dashboard with habits like “Morning Exercise,” “Drink Water,” “Meditation,” and “Write a Journal,” each with colored circles representing days of the week and completion status. The right phone shows the “Add habit” screen, where users can enter a habit name, set frequency (daily or every other day), choose a group, select an icon and tint color, and enable reminders. The background is a vibrant gradient of pink, orange, and purple.
Screenshot of the Spark habit tracker app on iOS. Four habits-Morning Exercise, Drink Water, Meditation, and Write a Journal-are shown under Health and Mindfulness categories. Each habit displays a row of circles for the past week: fully colored circles mark completed days, while faded circles indicate missed days within an ongoing streak. The app uses a dark theme with colorful icons and a navigation bar at the bottom for Habits and Settings.
A smartphone displays the Spark habit tracker app against a vibrant orange and pink gradient background. The app screen shows four habits: “Morning Exercise,” “Drink Water,” “Meditation,” and “Write a Journal,” each with a row of circles representing the last seven days. Boldly colored circles indicate completed habit days, while slightly brighter circles show days in between streaks, reflecting that each habit is set to be completed every other day. The interface uses distinct colors for each habit, with icons and labels for easy identification. The bottom navigation bar includes “Habits” and “Settings” tabs.
Spark app onboarding video: User sees a welcome screen with app logo, feature highlights, and a “Let’s start” button; taps to continue. Next, the reminders screen explains notification permissions with an animated notification mockup and two buttons: “Enable notifications” and “Later.” User taps “Enable notifications”, iOS permission alert appears, user denies. App shows an alert about missing reminders and explains permissions can be enabled later in Settings. User then views a paywall with Spark+ annual and monthly options, dismisses it, and enters the main Spark app view.
A video walkthrough of the Spark habit tracker iOS app’s onboarding flow. The first screen displays the Spark logo, a brief summary of main features, and a large red “Continue” button, with each element appearing gradually through slow animations. The next screen introduces reminders, showing a sample notification and prompting users to allow notifications via a prominent red button, with elements animating in sequence. The third screen guides users to create their first habit, featuring input fields for the habit name, a toggle and time selector for reminders, and a red “Save” button, all appearing one after another with smooth animations. The final screen presents a paywall for the Spark+ subscription, offering annual and monthly options and listing premium features, shown without animation. The video moves smoothly from one screen to the next after all elements on each screen are fully revealed.
Three iPhone screens display the onboarding flow for the Spark habit tracker app in dark mode, set against a purple gradient background. The first screen welcomes users with the Spark logo, a brief description of key features, and a red “Continue” button. The middle screen introduces reminders, showing a sample notification and prompting users to allow notifications with a prominent red button. The third screen guides users to create their first habit, offering fields for the habit name, a reminder toggle with time selection, and a red “Save” button.
Two iPhones are shown against a purple abstract background. The left iPhone displays a notification from the Spark habit tracker app, reading: “Show off new notification system. Stay on track! Have you logged your progress today?” with a flame icon and a “Mark as completed” button below. The right iPhone shows the Spark app’s Settings screen in dark mode, featuring options to unlock Spark+, manage groups, toggle follow-up reminders, switch display mode and accent color, and access privacy policy and terms. The bottom navigation bar highlights the Settings tab.
A digital sales summary card with rounded corners is displayed over a blurred blue and orange background. The card shows “Sales” at the top with a question mark icon, the date range “Apr 2 – May 1, 2025,” and total sales of “$1.99” with “N/A” next to it. A thin blue line appears at the bottom of the card.
iPhone screen displaying two notifications from the Spark habit tracker app against a colorful gradient background. Both notifications titled “Show off new notification system” feature reminders: the top one (marked “now”) says “Don’t forget to log your progress today!” while the bottom one (from “1m ago”) reads “Stay on track! Have you logged your progress today?” Each notification includes the Spark logo. The notification group has “Show less” and close buttons at the top. The phone displays a smooth background gradient transitioning from pink to teal blue.
Three iPhones display the Spark habit tracker app’s settings and subscription management screens in dark mode, set against a purple gradient background. The left and center phones show the Settings screen, featuring options for display mode, accent color, privacy settings, telemetry toggle, system settings, and a button to manage the subscription. The right phone displays the iOS subscription management interface for Spark+, showing monthly and yearly subscription options and a button to cancel the subscription.
Two iPhones display the Spark habit tracker app in dark mode on a blue and purple gradient background. The left phone shows the Groups screen with a “Health” group and a message about reaching the group limit without Spark+. The right phone shows the main habits list, featuring cards for “Morning Exercise,” “Drink Water,” and “Read a Book,” each with habit icons, streak counts, and a row of circles representing the last seven days. A message at the bottom indicates the user has reached the habit limit without Spark+.
Two iPhones display the “Stats” screen from the Spark habit tracker app, one in light mode (left) and one in dark mode (right), against a gradient gray and red background. Both screens show red bar charts visualizing habit completion rates by day of the week, organized into categories such as “Health,” “Mindfulness,” “Others,” and “All Habits.” The dark mode screen includes a data range selector for week, month, or year at the top. The bottom navigation bar has icons for Habits, Stats, and Settings.
An iPhone screen displays a minimalist home screen with a dark abstract wallpaper. At the top left, there are two app icons: “Spark” and “Spark Dev,” both featuring stylized flame logos on dark backgrounds. The dock at the bottom contains four apps: Phone, a checklist or tasks app, Signal, and Safari. The time is 15:47, and the battery is at 82%. The background transitions from deep blue on the left to dark gray on the right.
An iPhone screen displays the Spark habit tracker app in dark mode, set against a vibrant pink-to-orange gradient background. The app shows four habit cards organized by category: “Morning Exercise” and “Drink Water” under “Health,” and “Meditation” and “Write a Journal” under “Mindfulness.” Each card features the habit name, a colored icon, streak count, and a row of circles representing the last seven days, with today’s circle highlighted. The bottom navigation bar includes icons for Habits, Stats, and Settings.
A bowl of vegetarian version of Polish żurek soup, featuring a thick, slightly brownish broth made with fermented rye flour. The soup contains visible chunks of hard-boiled egg, pieces of root vegetables, and tofu. The dish is served in a white bowl with a spoon, placed on a green napkin atop a table with a white tablecloth.
Three iPhone screens on a dark blue background show Spark habit tracker localized in Polish. Left: Lock screen with a notification—“Idź pobiegać. Trzymaj się planu i nie zapomnij zapisać swoich postępów!” (Go for a run. Stick to your plan and don’t forget to log your progress!). Center: Main habit list with “Idź pobiegać” (Go for a run) and “Medytuj” (Meditate) cards, each showing streaks, notification times, and recent activity circles. Right: Detail view of “Medytuj” with a red theme, 7-day streak, notification settings, and monthly calendars marking completed meditation sessions.
Promotional screenshot for the Spark habit tracker app, designed for the App Store. The image features two iPhones on a vibrant purple background. The left iPhone shows the “Write a Journal” habit detail in light mode, displaying a monthly calendar for January 2025 with blue circles marking completed days and gray circles for missed days. The right iPhone shows the same habit in dark mode, with a grid of four monthly calendars (December, January, February, March), each using blue and gray dots to visualize daily progress. At the top, bold white text reads “History at a Glance,” with a subheading: “See your progress over time and stay on track.”
iPhone screen displaying the “Meditation” habit detail view in the Spark habit tracker app. The interface has a mint green background with matching green icons. At the top, the meditation habit is shown with a figure in lotus position icon and “2 days” streak counter. Below, a brief description reads “Practice mindfulness with 10 minutes of meditation every day.” The notifications section shows a “Remind me” option that’s currently toggled off. The history section displays four month calendars (April, March, February, January) with green circles indicating completed meditation sessions and various shades of gray showing missed days. April 2025 shows several completed days including today, while March shows a mix of completed and missed days. February and January show mostly missed meditation sessions. A green “More” button appears in the upper right of the history section
iPhone screen showing the detail view of the “Write a Journal” habit in the Spark habit tracker app. The interface has a red theme with an open book icon and the habit name in bold red text. Below, it displays a streak of “1 day” and a brief description: “Reflect on your day by writing a journal entry before bed.” The notifications toggle is off. The history section shows monthly calendars, with April fully visible and March partially visible near the left edge. Red circles mark days when the habit was completed, and gray circles indicate missed days. A red “More” button is on the right above the calendar.
The video showcases interactions with a habit tracker app on an iPhone: - Start: The screen displays the “Write a Journal” habit with a red-themed design, showing the title, an open book icon, a 1-day streak, and calendars for January–April 2025 marked with red (completed) and gray (missed) dots. - Scroll: The user scrolls down to view additional calendars for December–November 2024, then scrolls back up to the 2025 view. - More button: Tapping “More” opens a detailed calendar for April 2025, highlighting completed (red circles) and missed (gray circles) days. - Switch months: The user navigates back through months (April 2025 to December 2024) using the “<” button. - Close & End: The sheet is dismissed, returning to the initial interface, which remains static as the video ends.
An iPhone screen displaying the “Write a Journal” habit inside the habit tracker app with a red-themed interface. The top section shows the habit title alongside an open book icon and a streak indicator of “1 day.” Below, a brief description reads, “Reflect on your day by writing a journal entry before bed.” The history section features monthly calendars for April, March, February, and January 2025, as well as December and November 2024. Each calendar uses red dots to mark completed days and gray dots for missed days. A “More” button is visible for additional options.
An iPhone screen displaying the “Write a Journal” habit tracker app against a vibrant pink-to-orange gradient background. The interface shows the habit title with an open book icon and a streak of “1 day.” Below, a brief description reads, “Reflect on your day by writing a journal entry before bed.” The history section features four monthly calendars (April, March, February, January) with red dots marking completed days and gray dots for missed days. A toggle switch for notifications is visible, along with a “More” button.