Sign language-based learning tools built for children in underserved African countries

Jenga Hub is part the Neghesti Sumari Foundation, an NGO dedicated to advancing inclusive education, based in Dar Es Salaam. In 2022 Jenga Hub launched the Kalimani App, an AI-powered digital learning platform promoting literacy, numeracy, and digital skills, teaching everything in Tanzanian Sign Language, to be used both in mainstream and specialized schools in six regions in Tanzania. By 2025 the app, which can also be used offline and is aligned with the national education curricula, had reached 3,000 learners and supported 150 teachers.

Solution: Kalimani App
Organization: The Jenga Hub
Country of Implementation: Tanzania

Find out more here: Zero Project Database

[Alt text: A student presents confidently in front of classmates, demonstrating sign language beside a display introducing the “Kalimani App.” This scene celebrates African innovation and accessibility in education, promoting communication and inclusion for Deaf learners.]