Personal Product

Vocabulary Builder (Personal Product)

A cross-platform vocabulary learning app deployed on web and android, built with TypeScript, Expo and Domain Driven Design. Features include spaced repetition reviews (SM-2), hands-free podcast narration, bilingual (EN/FR) word tracking with definitions and context sentences, and offline-first backup with ZIP-based sync — all from a single codebase with zero cloud dependency.

Stack

React NativeExpo

Source

Vocabulary Builder store feature graphic

Add words with context

Captures the core word-entry workflow for adding vocabulary with definitions and examples.
Supports bilingual EN/FR tracking from the same form-driven experience.
Stores words locally through the shared domain model and repository layer.

Word of the day

Highlights a daily vocabulary prompt to make returning to the app feel useful immediately.
Surfaces definitions, translations, and context in a compact mobile-first view.
Reinforces regular study habits without requiring a full review session.

Review your words

SM-2 scheduling prioritizes words that are due instead of showing a flat flashcard queue.
Review flow tracks recall quality and updates the next review date automatically.
Built to support daily retention with minimal manual organization.

Listen mode

Hands-free podcast narration lets users review vocabulary while walking, commuting, or resting.
Reads saved words with definitions and context so review is not limited to screen time.
Reuses the same vocabulary data as the visual review flow.

Learning statistics

Progress views summarize review activity, streaks, and vocabulary growth.
Gives learners feedback on consistency and retention over time.
Keeps personal analytics local with the rest of the offline-first app data.

Source-based organization

Words can be grouped by source so learners remember where vocabulary came from.
Supports books, articles, videos, courses, or any custom learning context.
Source metadata is part of the clean domain model instead of UI-only tagging.

Offline-first backup and preferences

Backup and restore workflows use ZIP-based sync to avoid cloud dependency.
Language and app preferences are available from a focused settings screen.
Native and web storage implementations stay interchangeable behind shared interfaces.

Choose your language

Onboarding supports English and French usage from the start.
Language choice connects to the app's localized vocabulary workflow.
Keeps the first-run experience aligned with the bilingual product scope.