Threema does offer free license keys for its standard app, as its paid model is a core part of its privacy-focused business strategy to avoid selling user data. If you are seeing websites offering "extra quality free top" license keys, these are likely scams or contain malware. Here are the legitimate ways to get or use Threema: Threema Shop: Buy Threema for Android

How to verify legitimacy

If the cost is a barrier, there are legitimate ways to get the app without resorting to risky "free" sites: