The timer in the Clock app runs in the background, but you can't see it while you are in another app — you have to pull down notifications or switch back. For studying with a lecture, timing a presentation, or a game, it helps to have the time on screen the whole time.
Set it up with FloatTimer+
FloatTimer+ (our app) floats timers, stopwatches and tally counters over any app as small cards you can drag anywhere.
- Install FloatTimer+ from Google Play and allow "Display over other apps".
- Create a timer — any hours, minutes and seconds, or a quick preset such as 25 minutes.
- Float it and open the app you are using. Start, pause and reset from the card itself.
- Fold it into a bubble when you need the space; the time keeps running.
More than one at a time
You can make as many timers, counters and stopwatches as you like for free, and they keep running. The free version shows one on screen at a time; Pro floats as many as you want at once, or a short ad unlocks that for 24 hours.