A Brazilian court ordered Apple, Google and Microsoft to delete the Secret app (and a similar one) from their app stores.

Nobody should use that app; it is proprietary software, so the users don't control it and it may well be malware (as many proprietary programs are).

The Apple and Microsoft operating systems are proprietary and full of malware, too, as is Google Play which is part of Android.

Notwithstanding that, this court decision is oppression, pure and simple. But what makes the decision so damaging is that Apple and Microsoft have built censorship of apps into their operating systems. Now Brazil is using their censorship systems for its own purposes.