A deep dive into the design and implementation of a synchronous, serialization-safe session store in React Native using `react-native-mmkv`, enabling fast, offline-first persistence for a mindfulness coaching app without the jank of AsyncStorage.
A step-by-step walkthrough of how to design and implement a composable prompt system for an on-device LLM-powered React Native app, using the Strategy pattern to separate prompt construction from UI logic and ensure testability and maintainability as requirements grow.
Most spaced-repetition apps split reading notes and review cards across two tables and require a 'convert to flashcard' step. FreedWise collapses them: every highlight carries its full FSRS state as columns, a single transaction grades a card and appends to the review log, and fallback scheduling ensures algorithm failures never block a review session.
Most reading apps run separate code paths for EPUB and PDF. FreedWise routes both formats through a single WebView backed by versioned vendor assets on the filesystem. The hard parts: a readiness handshake before sending highlight data, Android tap overlays that break when the viewport zooms, and enforcing an offline-only guarantee at the Content Security Policy level.
A deep dive into the architecture of a React hook that integrates with a native streaming LLM module lacking completion signals. Learn how to use refs for mutable state, manage event listener lifecycles, and coordinate with React's rendering model to build a leak-proof, responsive streaming experience.
FreedWise collapses reading and spaced-repetition review into one offline-first mobile app. You highlight, FSRS schedules it. No account, no sync server, no network — the whole system lives in SQLite on your device. The hardest part was building a single WebView reader that handles both EPUB and PDF across 17 iterations of vendor asset versioning.
