Learn Faster.
Remember Longer.
A modern, intelligent spaced-repetition flashcard system. Store everything locally, sync securely with end-to-end encryption, and study seamlessly across mobile, desktop, and terminal.
Engineered for Lifelong Mastery
Combining cutting-edge cognitive science with rigorous privacy engineering.
FSRS Scheduling
State-of-the-art Free Spaced Repetition Scheduler algorithm computes exact memory decay curves, minimizing study time while maximizing long-term retention.
End-to-End Encryption
Protect sensitive notes with client-side AES-GCM encryption. Even when synced to cloud servers, only your devices possess the keys to decrypt your protected decks.
Local-First Reliability
Your entire flashcard collection resides in high-speed local SQLite. Instant search, zero network lag, and full offline study without waiting on servers.
TUI & Mobile Clients
Study comfortably with our rich Flutter application on iOS and Android, or maintain deep focus using the lightning-fast terminal UI (TUI) on your workstation.
Multi-Device Sync
Log in effortlessly via email one-time token or Google sign-in. Review progress and study statistics synchronize automatically across your devices.
Complete Data Sovereignty
Export full archive backups at any moment. No vendor lock-in, no tracking SDKs, and transparent data lifecycle management.
Transparent Plans
Local study is always free and unlimited. Upgrade when you need expanded cloud sync.
Free
Unlimited local cards, full FSRS study, up to 300 cloud-synced cards on 2 devices.
- ✓ Unlimited local study
- ✓ Full FSRS scheduling
- ✓ 300 cards cloud sync
- ✓ 2 registered devices
Standard
For active learners building core vocabulary and reference sets.
- ✓ Everything in Free
- ✓ 1,000 cards cloud sync
- ✓ Multi-device sync
- ✓ Data API access
Pro
Ideal for language learning and extensive professional certification study.
- ✓ Everything in Standard
- ✓ 5,000 cards cloud sync
- ✓ Expanded media storage
- ✓ High-priority sync
Premium
Designed for power users, researchers, and massive encyclopedic card bases.
- ✓ Everything in Pro
- ✓ 10,000 cards cloud sync
- ✓ Full API tokens
- ✓ Priority support