What it is
This is a small Android flashcard app built to make vocabulary practice more structured while also serving as a real Android development project in Kotlin.
android application
German Learning App
Offline-first Android flashcard app with spaced repetition, deck-based studying, daily limits, and local persistence.
Problem it addresses
Vocabulary study gets harder to sustain when review is unstructured. The app uses spaced repetition and deck-level limits so studying stays manageable instead of turning into a long unsorted card list.
What I implemented
- An SM-2-style study flow where card ratings update intervals, ease, and next review time.
- Deck-based study sessions with due-card and new-card counts.
- A configurable daily new-card limit so study sessions stay realistic.
- Offline progress storage using Room, with no account or server required.
- Settings and a layered data/domain/ui project structure to keep the codebase readable as features grow.
What it demonstrates
- Implementing domain logic in Kotlin instead of only wiring screens together.
- Building Android UI with Compose while keeping persistence and business logic separated.
- Thinking in offline-first terms and using local storage intentionally.
- Using a personal-use product idea to practice architecture, state, and maintainable feature growth.