I'm on Samsung S7 and use Game Screen Recorder to record my runs. I sometimes stream my runs using the YouTube Gaming app, which means no internal storage is needed. No timer is necessary for this leaderboard since we use https://github.com/Slush0Puppy/retime to retime runs accurately to the frame.

If you are interested in finding more resources for recording or timing on mobile devices, visit the Mobile Speedrunning Discord: https://discord.gg/bpY8zeB

There you will also find a great community of 350+ runners, competitions, and a ton of new games to play!