Description
Recall AI — AI-Powered Flashcard & Spaced Repetition App
Recall AI is a complete, production-ready Flutter application
that helps users learn anything faster using AI-generated flashcards and the
proven SM-2 spaced repetition algorithm. Built with clean architecture,
Riverpod state management, Firebase backend, OpenAI card generation, and
RevenueCat subscriptions — everything you need to launch your own study app on
Android and iOS.
✨ Key Features
-
AI Flashcard Generation — Paste notes, type a topic, or
upload an image of your notes. OpenAI (GPT-4o-mini) generates a full deck of
flashcards in seconds. -
SM-2 Spaced Repetition — The same algorithm used by Anki.
Cards are scheduled at the optimal interval for long-term retention (New →
Learning → Review → Mastered). -
4 Study Modes — Flashcard flip, Multiple Choice (MCQ) with
explanations, True/False, and Typing mode (Pro). -
OCR Input (Pro) — Upload a photo or image of your notes.
Google ML Kit extracts the text, then AI turns it into a study deck. -
AI Study Guide — Per-deck AI-generated overview with key
concepts, common mistakes, and memory tips. -
Gamification — XP, levels, daily streak tracking with 2× XP
multiplier, badges, and mastery percentage per deck. -
Analytics Dashboard — Weekly study chart, subject mastery
breakdown, level progress bar, and badge showcase. -
Deck Sharing & Explore — Share decks with a 6-character
code. Browse and import from a public community feed. -
Study Reminders — scheduled local notifications tell users
how many cards are due, with optional streak-protection alerts. No backend
required; works offline. -
In-App Subscriptions — Free, Monthly, Yearly, and Lifetime
tiers managed via RevenueCat with a built-in paywall screen. -
Dark & Light Theme — Material 3 design with dynamic
color scheme. Fully customizable brand color. -
4 Auth Providers — Email/password, Google Sign-In, Sign in
with Apple, and anonymous guest mode. -
Offline / Guest Mode — Guests study locally via
SharedPreferences. Authenticated users sync via Firestore. -
Portrait-only, phone-first UI — Pixel-perfect Material 3
design with Figtree font.
Screens Included
- Splash Screen with brand animation
- Onboarding carousel (3 slides)
- Sign In / Sign Up (Email, Google, Apple, Guest)
- Home Overview — stats card, recent decks, quick start
- Deck List — search, sort, filter by subject & mastery
- Deck Method Selection — 4 creation modes
- Deck Creation — AI generation form with subject, difficulty, card count
- Deck Detail — 3 tabs: Flashcards, Stats, AI Study Guide
- Deck Edit — add, edit, reorder, delete cards
- Study Session — 4 modes with progress header
- Study Summary — results, XP earned, mastered cards
- Progress / Analytics — level, streak, weekly chart, badges
- Profile — account info, subscription status, quick stats
-
Settings — theme toggle, study goals, reminder time and streak alerts, sign
out - Explore — browse community-shared decks
- Import Deck — 6-character share code lookup
- Paywall — subscription plans with feature comparison
Tech Stack
- Framework: Flutter 3 / Dart 3
- State Management: flutter_riverpod
- Routing: go_router with route guards
-
Backend: Firebase Auth, Cloud Firestore, Firebase Remote
Config -
AI: OpenAI GPT-4o-mini (key stored in Remote Config — no
hardcoding) - Monetization: RevenueCat (purchases_flutter)
- OCR: Google ML Kit Text Recognition
-
Design: Material 3 · Figtree font · Teal seed color
(#0D9488) -
Architecture: Clean architecture per feature (presentation
/ application / domain / data) - Testing: Unit tests + policy tests included
Subscription Tiers
Plans: Free · Monthly ($4.99) · Yearly ($29.99) · Lifetime
($49.99). Every paid plan unlocks the same Pro feature set — only the billing
period differs.
- Max decks — Free: 5 · Pro: unlimited
-
AI generations per day — Free: 3, plus one more for each
optional rewarded video · Pro: unlimited - Cards per generation — Free: 15 · Pro: 50
- Character input limit — Free: 2,000 · Pro: 20,000
- Image upload (OCR) — Free: ✗ · Pro: ✓
- Deck sharing — Free: 1 deck · Pro: unlimited
- Analytics history — Free: 7 days · Pro: all time
- Ads — Free: optional rewarded videos · Pro: none
⚙️ Requirements to Launch
- Flutter SDK 3.x
- Firebase project (free tier works fine)
- OpenAI API key (added to Firebase Remote Config — no code change needed)
- RevenueCat account (free up to $2,500 MRR)
- Google Play Console ($25 one-time) for Android
- Apple Developer account ($99/year) for iOS + Sign in with Apple
What’s Included
- Complete Flutter source code (Android + iOS)
-
Full offline HTML documentation (
docs/documentation.html) - Quick Start Guide (
docs/quick-start.html) - Unit tests + policy tests
- Clean architecture, well-commented and ready to customise
Changelog
Version 1.1.0 — Reminders, Rewarded Ads & Toolchain Upgrade
Upgrade note: this release raises the minimum toolchain to Flutter 3.44 /
Dart 3.12, JDK 17 and Android Gradle Plugin 9.
-
New — Study Reminders. Opt-in daily notification at a time
the user picks, showing how many cards are due, plus an optional alert when
a streak is about to break. Local notifications, so no backend is required
and they work offline and in guest mode. -
New — Rewarded video ads. Free users get 3 AI generations
per day, then can watch an optional rewarded ad to earn one more. Pro
subscribers are never gated and see no ads. -
New — Release signing via
android/key.properties, with an example file included. Release
builds were previously debug-signed, which Google Play rejects. -
New — Privacy policy draft
(docs/privacy-policy.md) plus tappable Terms / Privacy links on
the sign-up screen and in Settings. -
New — Play Store release guide
(docs/play-store-release.md) with Data Safety form answers and
a submission checklist. -
Upgraded Riverpod to 3.4.2, go_router to 17.5.0, RevenueCat
to 10.8, Google Sign-In to 7.2, Sign in with Apple to 8.1, fl_chart to 1.2,
google_fonts to 8.2, ML Kit to 0.16, and the Firebase suite to current. -
Upgraded the Android toolchain to Gradle 9.1.0, AGP 9.0.1,
Kotlin 2.3.20 and google-services 4.4.4. -
Fixed a silent failure where a release build without a
RevenueCat key shipped with an empty key and failed every purchase with no
error shown. -
Fixed the iOS Google Sign-In URL scheme, which was missing
and prevented the sign-in callback from returning. -
Documentation corrected — previous versions described
banner ads and push reminders that were not present in the code. Those
features now exist, and the docs describe what actually ships.
Version 1.0.1 — Bug Fixes
-
Fixed the flashcard answer side sometimes being unreadable — the answer now
uses guaranteed-contrast Material 3 colors in both light and dark themes,
with a clear placeholder when a card has no answer. -
Fixed newly imported or created decks occasionally showing no flashcards —
the deck’s cards now appear immediately (stale cached card list is refreshed
after save/import). -
Renamed the “Upload PDF / Image” creation option to “Upload Image” to
accurately reflect image-based OCR input. -
Added the iOS photo library usage description
(NSPhotoLibraryUsageDescription) for App Store compliance when
importing images for OCR.
Version 1.0.0 — Initial Release
- AI flashcard generation via OpenAI GPT-4o-mini (paste notes, topic, OCR)
- SM-2 spaced repetition engine with 4 card states
- 3 study modes: Flashcard, MCQ, True/False
- AI-generated per-deck Study Guide
- Gamification: XP, levels, streaks, badges
- Analytics dashboard with weekly chart and subject breakdown
- Deck sharing with 6-character codes and public Explore feed
- RevenueCat subscriptions: Monthly, Yearly, Lifetime
- 4 auth providers: Email, Google, Apple, Anonymous
- Dark / Light theme toggle
- Full offline guest mode
- iOS arm64 simulator support (MLKit 0.15.1 + platform 15.6)
Support
We provide dedicated support for all CodeCanyon buyers. Please include your
purchase code when reaching out.
-
Email:
devsnack26@gmail.com -
WhatsApp:
+855 967 413 911
Response time: within 24–48 hours on business days.
Recall AI is a Flutter-based mobile flashcard app for learners who want to create, study, and manage flashcards in one place. It uses AI to help generate flashcard content from user input, then schedules reviews using spaced repetition so cards reappear over time based on learning progress. The app also includes in-app subscriptions for paid features or access tiers. It is intended for students, language learners, exam candidates, and other self-directed learners who prefer structured, repeatable study sessions.