So I am new to speedrunning, and I need a timer. First off, I play on mac, so I can't download LiveSplit. Second, I'm not allowed to download any more apps on this computer. My other computer is outdated, so it can't run an the timer that is on the app store. I was thinking of streaming me speedrunning, but the rules say you can't use clips from a stream. I'm in a pickle. Is there any way that I can use a speedrun timer without any downloads?

You can run while running a online stopwatch on another tab and then see real time in a video editing software (which I already use to cut out the other runs, but Idk what u do)