Use APKPure App
Get SlideTimer old version APK for Android
Time your presentations Slide by Slide.
SlideTimer is the best way to not forget about time during your presentations.
See how you are doing for the current slide and how much time you have left in total.
Get a push notification to your smartwatch each time you reach the set limit on a slide.
This App is on Github. Click on the website below, if you would like to have a look.