Not the newest article, but relevant https://dt.gl/cloudflare-why-the-fuss/
You can download signal via APK on signal.org/android/apk or my personal pick use molly.im what is a Foss fork of signal with some extra features
iOS is collecting for Apple, Android is Google, but Google is a advertising company. Our of the box iOS is probably better (keep in mind Apple is a closed garden and you cant really see the code). I run GrapheneOS for my daily driver. But I also have an iPad. With Adguard you can block a lot, including with the right host file Apple domains. You can also via ADB degoogle a Samsung or any other android device.
So android gives you more options when it comes go blocking trackers, apps, etc. iOS is probably out of the box a little better, but you have not much ways to lock things down.
I actually believe you should get piped… https://github.com/libre-tube/LibreTube
Wizardswap.io already does swaps between the two. But it is great to see more swaps coming. The future will be decentralized
So far, works as expected ;) great job as usual