Encore

Encore is an offline French spaced-repetition app for Android. Cards and review progress are stored locally on the device; there is no account and no network dependency.

Features

• Spaced-repetition review (Again / Hard / Good / Easy) with per-card scheduling
• Searchable card library, organized by deck
• Deck import via .fdeck files
• Local storage only, no network access required

Use the app

1. Open Library to add a card or import a .fdeck file.
2. Open Today and tap Start review.
3. Tap a card in Library to view or edit it.

.fdeck format

A .fdeck file is UTF-8 JSON with this structure:

{
  "format": "fdeck",
  "version": 1,
  "name": "Words learned today",
  "cards": [
    {
      "front": "à côté de",
      "back": "next to / beside"
    },
    {
      "front": "l’endroit",
      "back": "place",
      "gender": "m",
      "example": "C’est l’endroit idéal.",
      "exampleTranslation": "It’s the ideal place.",
      "note": "Common noun",
      "tags": ["daily", "lesson-15"]
    }
  ]
}

Fields

Field	Required	Value
format	Yes	Must be "fdeck"
version	Yes	Must be 1
name	Yes	Non-empty deck name
cards	Yes	Array of card objects
front	Yes	Non-empty French word or phrase
back	Yes	Non-empty English meaning
gender	No	"m" or "f"
example	No	French example sentence
exampleTranslation	No	English translation of the example
note	No	Additional context
tags	No	Array of text labels

Save the JSON as a file ending in .fdeck. It is plain JSON, not a ZIP archive. Omit optional fields when they have no value.

A sample deck is available at samples/assimil-lesson-15.fdeck.

Develop

Requirements: JDK 17 or newer and Android SDK 37.

./gradlew testDebugUnitTest assembleDebug

The debug APK is written to app/build/outputs/apk/debug/app-debug.apk.

To compile the device parser tests:

./gradlew compileDebugAndroidTestKotlin

License

Encore is licensed under the MIT License.