Case study · Mobile app
Chat Book: messaging, calls and social in one app
A Flutter messaging app for iOS and Android with text and voice messages, audio and video calls, group chats, status updates and reels.
The brief
A modern messaging app that covers how people actually talk: text, voice notes, audio and video calls, plus the social layer around them, with reels, status updates, broadcasts and groups.
The app
Screens from the Android build, shown in our phone frame.
Welcome 
Chats and status 
Chat with voice notes 
Call history 
Video call
What we built
One-to-one chats with text and voice messages
Audio and video calling, with a call history
Group chats and broadcast messages
Status updates and short-video reels
Sign-up and login, including phone-number verification by one-time code
How we are delivering it
Built in Flutter for Android and iOS, with GetX for state management and REST APIs behind messaging and calls.
Delivered by our engineering team. Some portfolio work predates the incorporation of JSK LOGICS LTD on 9 March 2026.
Where it stands
Chat Book is in development, so there is no store link yet.
Facts on this page come from our project records. The screens are from the app build. We do not publish usage figures.