Is there any proprietary Android app for which you wish there would be an open-source alternative?
Basically, what the title says. Do you use any app, that is proprietary, but either has no OSS alternatives or they're all not good enough? If there is an alternative, what keeps you from switching?
There already was a post like this this year but now my answer is "a standardized push notification system (most likely federated) that's actually possible to be implemented in a user friendly way". Google doesn't want to encrypt theirs afaik and apparently some people are concerned about the traditional "every app is responsible for its own notifications" approach consuming much more battery, even though I didn't notice it myself (I guess it's possible if you have 50+ apps installed but it's not something that should be a thing in the first place).
Idk about Element but Signal uses the Google's insecure implementation if the device has gapps installed and it uses the traditional system which is not push if gapps are not installed.