How FluentCards Works
A simple, science-backed approach to language learning. Here's how to get started.
Sign in with Google
Click "Continue with Google" to create your account. No passwords to remember — your Google account handles authentication securely. We only access your email and display name.
No sign-up required? FluentCards uses Firebase Authentication, so you're set up in one click. Your data is private and encrypted by default.
Create a Deck & Add Cards
Name your deck and start adding flashcards. Each card has a front (the word or expression you want to learn) and a back (the meaning or translation).
For Japanese learners:
Type kanji with furigana using bracket syntax:
明日[あした] 漢字[かんじ] 勉強[べんきょう] Smart features:
- Auto-translate — type the front, generate the back instantly with one tap
- Auto-furigana — add reading aids with one click
- Bulk import — paste CSV data to create many cards at once
Set Pronunciation & Voice
For each card, choose the pronunciation language. This determines the TTS voice that reads the card aloud. FluentCards supports 20+ languages with neural voices.
Enable AI mnemonics per card for visual memory aids on difficult words.
Study with Spaced Repetition
Open a deck and tap "Study." FluentCards shows you cards due for review. Try to recall the answer, then flip the card to check. Rate your recall:
Again
Forgot completely
Hard
Barely remembered
Good
Recalled with effort
Easy
Instant recall
Your rating tells the FSRS algorithm how well you know the card. It adjusts the next review interval accordingly — easier cards appear less often, harder ones more frequently.
Track & Improve
Watch your retention grow. The FSRS algorithm shows you detailed metrics:
- Due count — how many cards are ready for review today
- Stability trend — how your memory strength is improving over time
- Difficulty distribution — which cards challenge you most
- Estimated retention — your predicted recall rate
Consistent daily practice — even 10 minutes — yields remarkable results. Most users see significant improvement within two weeks.
Discover & Share Decks
Browse the Discover section to find public decks shared by the community. Found a useful JLPT vocabulary list? Clone it to your library with one click.
When you've built a great deck, publish it to the marketplace so others can learn from it too. Your contribution helps the whole community grow.