Dev Log
Consumer
Building Kchime
Reply naturally in English, every time.
Architecture
KChime runs as both a web app and an iOS keyboard extension. The reply engine accepts an incoming message, analyzes tone and context, then generates natural reply suggestions. A practice mode creates real conversation scenarios to build English fluency. Daily streaks and progress tracking keep users engaged. The iOS keyboard extension communicates with the backend via a shared App Group container.
Tech Stack
Try KChime
kchime.com/
Build Timeline
Core reply engine with 4 tone modes
Built the reply suggestion engine — paste any incoming message and get natural replies in 4 tones: casual, professional, friendly, and direct. Each reply includes a confidence score. Added "Fix My Message" mode that polishes user-written drafts to sound more natural while preserving their intent.
Conversation practice with 50+ scenarios
Created a practice system with 50+ conversation scenarios across categories: workplace, social, interviews, small talk, conflict resolution, and dating. Each scenario includes an AI conversation partner that responds naturally and provides feedback on the user's replies. Added voice mode using the Web Speech API.
iOS keyboard extension + daily learning
Shipped the iOS keyboard extension in Swift — users can get reply suggestions directly from any messaging app without switching contexts. Added a daily learning feed with 3 new phrases, idioms, and cultural context tips. Integrated Supabase Auth for cross-platform sync and Stripe for Pro subscriptions.