Transparency please – Threema. The Secure Messenger Review

Good app and seem like good devs behind it, but refusal to allow open source inspection of code makes me a little less comfortable. A competitor Signal is open source and researchers found a bug and it was quickly patched. All software has bugs and it's sometimes hard for a dev team to catch all their own bugs. For all the very low ratings, understand this is not intended to compete with whatsapp or messenger. This is a serious app with a niche market and focus. The nature of it makes it inherently less convenient than those other mainstream apps.
Review by 007 Benny on Threema. The Secure Messenger.