2days I dont like the apparent data collection
I don't know the internals, but at least partially you can limit data collection with a help of RethinkDNS, putting the app to Isolate mode and whitelisting only what's necessary. In my case, Waze works with only about 3 domains whitelisted, while it's only 1/5 accessed.
That's in case you won't find an alternative.
What's still good, is that you will start to see what's going under the hood even with trusted/foss apps and you can block all those firebaselogging.googleapis.com from Revolut, appsflyersdk.com, time.google.com, improving.duckduckgo.com (even when it's disabled in ddg app!)
And all that is done on device (it has on-device blocklists from community like all those HaGeZi etc), without leaving it.