Enable tap tap by the link ive provided below, after the link is open youll get some similar view of which ive provided via screenshot. Download the latest Alpha app i.e in this case the 5th one.
After downloading the app
1. Accessibility > installed services > enable tap tap
2. 3rd option "Actions" from where you can select any app, turn on flashlight, capture screenshot by just tapping twice on the back panel.
Click This link to DOWNLOAD:-
