Threema[1]. Unforunately paid but with an open source android client version for public reviewing. However they accept #bitcoin on chain and postal bank notes for purchasing a license. Maybe I can give you a free promo code convertable to a fresh license, if you give me a @SimpleX Chat DM. The exif removal code + renaming code was reviewed by a close friend of mine which fully knows about such stuff not long ago. [1]:

Threema

Threema – Highly Secure Communication For Individuals and Companies

The secure instant messenger from Switzerland. GDPR-compliant chat app for individuals and organizations that value security and data protection. T...