Hello I want to start speed running on mobile but I have no idea how to get the timer on the screen can someone tell me please?

ios or android?

I screen recorded to twitch and after timed my self or i have a separate device showing your time

In case you thought you did, you do not need a timer for your runs by the way

If you are on Android, you can use the Floating Speedrun timer frol Google Play :)

Thank you guys