An offline, voice-first literacy tutor for children, made for the Nigerian context
Kratu is an offline, voice-first tutor for children aged 6-10, made for the Nigerian context, on low-cost Android tablets shared at a learning centre. Laila, a cartoon bird, speaks to the child (lessons start in Hausa) and listens: speech recognition, face login and speaker recognition all run on the tablet with no internet, and no photo of a child is ever stored. I founded it and built the curriculum, content pipeline, on-device AI and app myself, working with Claude Code.
- Role
- Founder and sole builder, working with Claude Code
- Years
- 2026
- Status
- Working prototype
6 learning modules
- Haruffa: letters A-Z
- Abubuwa: words
- Rubutu: spelling by tap or voice
- Lambobi: numbers to 1,000
- Nemo hoto: listen and find
- Karatu: reading words
- 644Audio clips (Hausa and Nigerian English) (as of Sep 2026)
- about 60 MBSize on the tablet (as of Sep 2026)
AIEducationAngularVoskONNX Runtime WebFirebase Hosting
No learner numbers yet: the first pilot learning centre, in Nigeria, is planned.