I'm using a block chain phone thats big on security and privacy, called the impulse K1. It has its own very limited App Store with only vetted apps allowed by the security team. Because of this I have to use the web a lot and save sites to my home screen, and their almost like apps, but the web shortcuts. Only a few sites have done their sites correctly so this works properly, ( even YouTubes doesn't work correclty, neither do any of the banks that I use )... Protonmail, an encrypted email service I use has done theirs properly, and so has of course peakD. Just another realisation of how much good work these guys do.... Thought I'd share it !!!