Use APKPure App
Get Filmframe Stopwatch (1 minute) old version APK for Android
Frame measurement on storyboard, frame measurement such as game development
Easy but practical! You can measure the time just by tapping.
1/24 SEC, 1/30 SEC, 1/60 SEC are also possible.
How to use, start with tap → stop with tap → tap to clear
The clock panel changes every 6 seconds and can be measured up to 1 minute.