// Link · 9 June 2026

Zaspa Earns a 50 Proof of Usefulness Score by Building a Private, Secure Baby Tracker

In this interview, Zaspa creator Siarhei Petrashka explains how he built a privacy-first, account-free baby tracker app. He discusses how the app stands out in a saturated market, how he leverages AI (OpenAI and Qdrant) safely without exposing user data, and how he manages localization using goman.l...

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