Version 0.8.6 – Under the hood: Turbo tuning! No new features – but we took the engine apart, cleaned it, and put it back together again. Faster sessions, smarter algorithms, and 470 lines less ballast. Sometimes less is more! Improved • Results Page: Fresh look, more details! Since we were tweaking the learning session system anyway, we decided to revamp the results page at the same time! Now with a detailed map view, filter and search function, responsive desktop layout, and smooth transitions. Instead of just “Was okay,” you can now see exactly WHERE you shine and WHERE there's room for improvement. Pretty & productive! • Session start at speed Before: Up to 5 retry attempts with increasing wait times. Like knocking on an open door five times. Now: One tap, instantly in. • Smoother learning flow Artificial delays and redundant updates eliminated. Before, provider updates were scattered like confetti—now everything happens in one go. Smoother than butter on warm toast. • 470 lines of code less. You're welcome! Spring cleaning in the learning core! Debug outputs removed, dead code buried, error handling streamlined. The app does exactly the same thing – just with less baggage. Marie Kondo would be proud! New • Response time tracking: Your speed counts! BrainCell now measures how long you need for each card. Answered quickly? You've got it. Thought about it for a long time? Come back sooner. Your pace flows directly into the learning intervals.

Version 0.8.5 – Improvements Under the Hood This update makes everything run a little smoother. Improved • Performance optimizations The app now runs smoother than ever. Fixed • Bug fixes Minor issues have been resolved and are now a thing of the past.

Version 0.8.4 – More Structure, More Elegance This update brings clearer structure, better control over notifications, and visual refinements across the app. New • Smart notifications with quiet hours • Individual times can now be set for different reminder types (e.g. Review, Motivation, Comeback). • Optional quiet hours ensure that no push notifications are sent during selected periods. Improved Dedicated settings page • Settings now have their own section and can be accessed via a new icon in the profile view, providing a clearer and more structured experience. • Redesigned decks, stacks & more A completely new visual system with improved depth and more precise interactions. • More performance, less overhead • Removal of heavy blur effects results in smoother animations and better performance, especially on older devices. • Faster profile statistics • Optimized database queries significantly reduce loading times.

Version 0.8.3 - Fully revamped onboarding with a fresh look and improved flow, now including proper landscape support - Polished iPad layout with refined spacing, proportions, and visual details - Seasonal content removed: holidays are over, the app is back to business - Minor improvements and bug fixes that quietly make everything feel better

This update makes BrainCell noticeably more practical — and a tiny bit more social. You can now recommend us and get rewarded, the exam calendar finally looks and feels like a real calendar, tablets no longer feel like “blown-up phones,” and websites turn straight into study cards. Sounds like a lot? It is. In a good way. Christmas Deal Starting 01.12.2025, things get festive — and a lot cheaper: you get a solid 30% off Premium. Perfect to treat yourself (or your studying self) to a gift. New: - Recommend and benefit Recommending BrainCell now pays off twice. You get a personal invite code to share. If someone upgrades to Premium through your code, you both receive perks. You help your friends study, and BrainCell says “thanks” — with rewards, not awkward handshakes. - URL import: websites become study cards No more manually carving up articles into cards. Just paste a link, BrainCell loads the content, you pick the relevant sections, and the AI handles the rest. Find it in your stack under “Add card.” From “I still need to summarize this” to “already in learning mode.” - Exam calendar 2.0 The exam calendar is now an actual calendar, with a proper monthly view. On the dashboard and exam page, you can see all exams and study days at a glance. Improvements: - Tablet UI refined We noticed how many of you study on tablets — first we were impressed, then we got to work. The UI is now even better tuned for big screens: slimmer spacing, nicer proportions, less “oversized,” more “made for it.” BrainCell on tablet feels so good you almost forget studying is work. (it isn’t, really ;)) Bug fixes - Premium icons are back The Premium icons briefly vanished. Not dramatic, but definitely a “wait, what?” moment. Bug found, bug squashed, icons restored. And yes — they’re staying this time. Promise.

This update makes BrainCell noticeably more practical — and a tiny bit more social. You can now recommend us and get rewarded, the exam calendar finally looks and feels like a real calendar, tablets no longer feel like “blown-up phones,” and websites turn straight into study cards. Sounds like a lot? It is. In a good way. Christmas Deal Starting 01.12.2025, things get festive — and a lot cheaper: you get a solid 30% off Premium. Perfect to treat yourself (or your studying self) to a gift. New: - Recommend and benefit Recommending BrainCell now pays off twice. You get a personal invite code to share. If someone upgrades to Premium through your code, you both receive perks. You help your friends study, and BrainCell says “thanks” — with rewards, not awkward handshakes. - URL import: websites become study cards No more manually carving up articles into cards. Just paste a link, BrainCell loads the content, you pick the relevant sections, and the AI handles the rest. Find it in your stack under “Add card.” From “I still need to summarize this” to “already in learning mode.” - Exam calendar 2.0 The exam calendar is now an actual calendar, with a proper monthly view. On the dashboard and exam page, you can see all exams and study days at a glance. Improvements: - Tablet UI refined We noticed how many of you study on tablets — first we were impressed, then we got to work. The UI is now even better tuned for big screens: slimmer spacing, nicer proportions, less “oversized,” more “made for it.” BrainCell on tablet feels so good you almost forget studying is work. (it isn’t, really ;)) Bug fixes - Premium icons are back The Premium icons briefly vanished. Not dramatic, but definitely a “wait, what?” moment. Bug found, bug squashed, icons restored. And yes — they’re staying this time. Promise.

Version 0.8.0 – New Exam Mode Introducing the new exam mode with automated, science-based study planning. New Features - Exam Calendar: Create exams, select stacks, and get an automatic study plan with countdown and progress tracking. - Adaptive Study Planning: Dynamic distribution of learning sessions based on progress and difficulty. - iOS Password AutoFill: Save your password directly to iCloud Keychain for faster login. Improvements - SmartRepeat updated: Clear 0–5 ratings, larger buttons, no fixed time labels. Algorithms work fully dynamically. - Performance & Code: Cleaned up and optimized. - Localization: Over 200 updated translations. Bug Fixes - Sync bug: Deleted cards no longer reappear on other devices.

Version 0.7.1 – Card Loop Fixed A bug caused incorrectly answered cards to reappear immediately, even though they weren’t scheduled to be reviewed again until later. Free users using SM-2 were especially affected. This issue has now been fully resolved. Bugfix: A logic error marked all cards with repetitions = 0 as “due,” regardless of their actual nextReviewDate. The filter logic has been corrected: cards are now only shown as due when their nextReviewDate has been reached or if they are truly new. Review intervals now work as intended again.

Version 0.7.0: Learn smarter, not harder Say goodbye to endless stack-hopping! This update makes your learning faster, smarter, and — let’s be honest — way more fun. All your due cards in one session, scientifically sorted and ready to crush. Plus: due cards are now so visible, you literally can’t miss them. New Quick Review: All due cards, one session No more stack-by-stack marathons! The new Quick Review widget on your home screen shows exactly how many cards are waiting for you — plus an estimated study time. Tap “Start Learning” and dive into one smart session optimized by Retrievability. The cards you’re most likely to forget come first — scientifically proven efficiency. Move stacks between decks Finally! You can now move stacks freely between decks. A smooth bottom sheet lets you pick the destination deck — or create a new one on the fly. Perfect for reorganizing and keeping your study space clean and structured. Improved Badges everywhere: Stay on top of your due cards Every stack and deck now shows a clear red badge indicating how many cards are waiting. New and overdue cards are included — never lose track again. Smart Overview: 7-day forecast Tap the badge in a stack header to open a neat bottom sheet with a seven-day preview — see what’s due today, tomorrow, or later this week. Perfect for planning your study rhythm. FSRS Turbo Upgrade The FSRS algorithm just got serious. Repetitions are now based on real study intervals, prioritization is safely stored in the database, and all your past progress was smoothly migrated. The result: smarter intervals, more reliable due times, and fewer “Didn’t I just learn this?” moments.

BrainCell 0.6.0 – Welcome to the Community Store The biggest update since the Challenge System: the new BrainCell Community Store is here! Learning is now social, inspiring, and collaborative. Share your knowledge, discover new topics, and grow with the BrainCell community. New in this version The BrainCell Community Store You can now share your own learning decks directly in the app – either privately with friends or publicly with the entire community. Discover content across countless topics, create your own decks, and learn from others. Private & Shared Decks You decide who can see your knowledge. Send links privately through your favorite apps or share them publicly in the store. All public submissions are reviewed before publishing to ensure quality and safety. Handpicked Content To kick things off, we’ve prepared a wide selection of decks – carefully curated by the BrainCell team. Choose a topic, download a deck, and start learning instantly. Trending Decks & Recommendations Find regular highlights, recommendations, and the most popular learning content from the community in the store. Get inspired and expand your knowledge in no time. We hope you enjoy this update and look forward to your feedback!

Premium System 2.0 & Stability Thanks for your feedback and patience! We completely overhauled the premium system and fixed important bugs. Sorry for any inconveniences over the past few days – your feedback helped us make everything more stable. NEW FEATURES & IMPROVEMENTS: Premium System Completely Rebuilt The entire premium system has been rebuilt from the ground up! Instead of insecure user_id, we now use the Original Transaction ID (OTI) – like a digital fingerprint for your subscription. Credits now work without login, and your premium status is rock-solid secured. Thanks to all beta testers for your feedback! Scrollable Activity History By popular request: You can now scroll through your complete activity history in your profile! Swipe right to discover your learning history from recent weeks and months. Perfect for seeing long-term progress and celebrating your achievements. Better Image Error Messages You told us that error messages during image upload were unclear – we fixed it! Now you get clear, understandable explanations instead of cryptic codes. We tell you exactly what went wrong and how to fix it. No more guessing! App Review Improvements The app review system has been optimized! We now ask for your feedback at the perfect moment – not too pushy, but not too late either. If you like BrainCell, we'd really appreciate a rating! Every star helps us make the app even better. SDK & Performance Updates Complete update to Flutter 3.35 and the latest dependencies! This means: Faster performance, fewer crashes, more modern features. We've also made various code optimizations – the app now runs smooth as butter. BUG FIXES: Lifetime Purchases Now Work! (Thanks Mika!) Apple played a trick on us: Lifetime purchases are hidden in a different part of the receipt than regular subscriptions – and that's exactly the part we overlooked! Thanks to Mika who brought this to our attention! If your lifetime purchase wasn't recognized: Just tap 'Restore Purchases' in settings and voila – premium is there! Faster Premium Recognition (Thanks Marika!) Marika alerted us to annoying database errors during premium checks – and we eliminated them immediately! Database queries have been optimized and now run lightning-fast and error-free. Your premium status is now recognized even more reliably – without delays and without error messages! Stability & General Bug Fixes We worked intensively on stability and fixed various bugs that occurred in recent updates. Especially the premium system and subscription management now run much more stable. Thanks for your reports and sorry again for the inconveniences! We always appreciate your feedback! Use the feedback function in the app or write us a review in the App Store.

Premium System 2.0 & Stability Thanks for your feedback and patience! We completely overhauled the premium system and fixed important bugs. Sorry for any inconveniences over the past few days – your feedback helped us make everything more stable. NEW FEATURES & IMPROVEMENTS: Premium System Completely Rebuilt The entire premium system has been rebuilt from the ground up! Instead of insecure user_id, we now use the Original Transaction ID (OTI) – like a digital fingerprint for your subscription. Credits now work without login, and your premium status is rock-solid secured. Thanks to all beta testers for your feedback! Scrollable Activity History By popular request: You can now scroll through your complete activity history in your profile! Swipe right to discover your learning history from recent weeks and months. Perfect for seeing long-term progress and celebrating your achievements. Better Image Error Messages You told us that error messages during image upload were unclear – we fixed it! Now you get clear, understandable explanations instead of cryptic codes. We tell you exactly what went wrong and how to fix it. No more guessing! App Review Improvements The app review system has been optimized! We now ask for your feedback at the perfect moment – not too pushy, but not too late either. If you like BrainCell, we'd really appreciate a rating! Every star helps us make the app even better. SDK & Performance Updates Complete update to Flutter 3.35 and the latest dependencies! This means: Faster performance, fewer crashes, more modern features. We've also made various code optimizations – the app now runs smooth as butter. BUG FIXES: Lifetime Purchases Now Work! (Thanks Mika!) Apple played a trick on us: Lifetime purchases are hidden in a different part of the receipt than regular subscriptions – and that's exactly the part we overlooked! Thanks to Mika who brought this to our attention! If your lifetime purchase wasn't recognized: Just tap 'Restore Purchases' in settings and voila – premium is there! Faster Premium Recognition (Thanks Marika!) Marika alerted us to annoying database errors during premium checks – and we eliminated them immediately! Database queries have been optimized and now run lightning-fast and error-free. Your premium status is now recognized even more reliably – without delays and without error messages! Stability & General Bug Fixes We worked intensively on stability and fixed various bugs that occurred in recent updates. Especially the premium system and subscription management now run much more stable. Thanks for your reports and sorry again for the inconveniences! We always appreciate your feedback! Use the feedback function in the app or write us a review in the App Store.

Maintenance Update: Polished & Perfected! A major maintenance update that shows: we’re listening to you! Translations have been refined, annoying bugs eliminated, and missing features added. Less drama, more quality. Improvements • Translation Upgrade Various texts have been revised and improved. The app now sounds natural and fluent – no more machine-like tone, but a smooth and polished experience. • Reactive Renaming Changes to deck and stack names are now instantly visible across the entire app – no restart required. Updates are immediate and save unnecessary detours. • Multilingual Push Notifications Notifications now appear in your chosen language. No more unexpected English messages – a consistent user experience at last. Bug Fixes • Challenge Rewards on Small Screens Rewards with long names are now fully visible even on smaller devices. Texts adapt correctly and remain readable. • Activity History Display When tracking activity daily, the bars in your history no longer overlap. The display stays clear, tidy, and easy to understand.

Version 0.5 – Challenge accepted! This update introduces our brand-new Challenge System: With daily and weekly goals, you stay motivated and can collect up to 160 points per week – Premium users earn 50% more points and reach their goals even faster. We’ve also made Premium features available offline, completely redesigned the deck overview, and simplified editing your avatar and name tag. Improved learning session stability, stronger Premium security, and numerous bug fixes make the app smoother than ever.

Version 0.5 – Challenge accepted! This update introduces our brand-new Challenge System: With daily and weekly goals, you stay motivated and can collect up to 160 points per week – Premium users earn 50% more points and reach their goals even faster. We’ve also made Premium features available offline, completely redesigned the deck overview, and simplified editing your avatar and name tag. Improved learning session stability, stronger Premium security, and numerous bug fixes make the app smoother than ever.

This release makes BrainCell noticeably smarter and gets you learning faster—no detours, no fuss. New reasoning model for Brain & Type Our answer checking now understands synonyms, paraphrases, and even mixed languages (DE/EN/ES/FR) much better. The result: more precise checks, fewer “But that should count, right?” moments, and overall fairer grading. In short: more aha, less head-scratching. Faster onboarding We trimmed the path from app launch to your first study session: fewer screens, fewer taps, more focus. Open the app, set things up quickly, and get straight to learning. That’s what “ready to go” feels like. Stability and bug fixes We removed a bunch of small bugs, smoothed performance, and polished the rough edges. Nothing flashy—just the steady satisfaction of everything running more smoothly than before.

Version 0.3 finally brings push notifications and a series of bug fixes. This update delivers the long-awaited reminders so your brain will never forget to study again. Plus, update dialogs now work flawlessly and we’ve fixed numerous minor issues—ready for the next level! New Features: Push notifications are finally here! Your phone will kindly remind you when it’s time to study, so you’ll never lose a learning streak again. Whether it’s streak protection, review reminders, or daily motivation—your personal learning assistant is now available around the clock. Bug Fixes: Update dialogs now work reliably. We’ve eliminated race conditions and optimized the timing. Instead of a fleeting 0.5 seconds, the notification now appears patiently after 2 seconds—so you won’t miss any new features! Improvements: Our digital caretaker has been hard at work: various minor bugs have been eliminated, rough edges smoothed, and everything polished to a shine. The app now runs smoother than ever before.

Image AI Upgrade! Completely Redesigned Image AI Service. Built from the ground up with a streamlined 2-Step Wizard (Upload & Analysis → Direct to Generation) - because fewer steps = more efficiency! We removed the unnecessary options and topic steps and replaced them with intelligent auto-detection. The AI now automatically recognizes the topic from your image and generates enhanced cards with additional information by default. Fewer clicks, better results! Like an express elevator for your brain - straight to the goal, no stops in between!

• Finally HD thinking: BrainCell is now fully optimized for iPad! It’s like we’ve given your brain an 8K display. Please don’t bite it. The new iPad version finally lets you learn wider, deeper, and smarter. Or at least look like it. • Janitorial service: Minor bugs have been swept away with our digital broom. Don’t worry, they’ve moved on to a better place. (Seriously!) We’re overwhelmed by your feedback and all the positive messages—thank you so much! If you have ideas for new features, you can submit them directly in the app: just tap “Suggest a Feature” at the very bottom of your profile. And if you like BrainCell, feel free to leave a review—it would make us really happy! :)

• Tutorial Awakening: After the first app launch, a helpful learning guide now springs into action and explains the mystery of Decks, Stacks, and Cards. No more confused faces – the learning hierarchy is finally decoded! • UI Polish Offensive: Various spots have received a little beauty treatment.

– Double identity exposed: Both checkboxes in the onboarding claimed to be the Terms of Service. We gently persuaded the impostor to go back to being the Privacy Policy. Order restored in the Checkbox Universe! – UI makeover for onboarding: Fonts got a smoothing session, paddings were gently massaged, and elements realigned. Everything now looks like it just left the UX spa – refreshed and centered.