This application is worth checking if you are looking for a reliable and accessible mobile speedrun timer.
FramePerfect Speedrun Timer offers a customizable timer allowing speedrunners to start, stop, and reset their runs precisely. This app also includes split functionality, which enables users to set custom splits based on different milestones or checkpoints in the game they are speedrunning. These splits can help speedrunners keep track of their progress and compare their times against their personal best or world records.
This speedrun timer is designed with a foolproof user interface and a large split button. It also works with streaming via device mirroring.