Chenghao Li

Indie iOS developer, Berlin

About

Solo iOS developer in Berlin. I build small, focused apps: a daily check-in app for people living alone (UOKnow), a talking medication reminder (DoseHalo), and One to One Secret Chat, an end-to-end encrypted messenger for exactly two people. I care about apps that do one thing well and don't track you.

Links

App Store

Website

Maker History

One to One Secret ChatAn end-to-end encrypted chat for exactly two people
Oct 2026

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Joined Product HuntOctober 15th, 2026

Forums

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2d ago

One to One Secret Chat - An end-to-end encrypted chat for exactly two people

A messenger that only holds one conversation. Pair with one person via an invite link; messages, photos and calls are encrypted on your phone and the server only stores ciphertext. No contact list, no groups, no ads. iOS, 25 languages.