Role:
Lead Android Developer
Year:
2019 – 2020
Platform:
Android + iOS
Status:
Live
OVERVIEW
Talkido is a speech-development app for children, paired with smart toys over BLE and NFC. The app drives interactive language exercises with audio guidance and offline session sync, used by speech therapists and parents.
Stack:
- Kotlin
- Java
- BLE / GATT
- NFC
- FFmpeg
- Material Design
OBJECTIVE
Give children with speech-development needs a playful, hands-on path to practice — and give therapists structured session data they can review between meetings.

APPROACH
BLE/GATT communication with the Talkido smart toy, NFC tag reads for content cards, an FFmpeg-powered audio pipeline for speech feedback, and offline-first session storage that syncs when online.
- BLE/GATT communication with smart toys
- NFC tag-based content selection
- FFmpeg audio processing pipeline
- Offline-first session storage with cloud sync
OUTCOME
Published on Google Play and the App Store and used by therapy practitioners and families. The architecture went on to power broader Mental Segment products.
