As promised, this is how I set up auto tap for iPhone. Idk how Android apps do it, so this might be only 90% perfect. I have iPhone 6S and iOS v13.1.3 :
Use AssistiveTouch on your iPhone, iPad, or iPod touch - Apple Support (SA)
Use AssistiveTouch on iPhone - Apple Support
IPhone tips and tricks: Get the most out of your new iPhone
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Use Touch Accommodations with your iPhone, iPad, iPod touch, or Apple Watch - Apple Support
Show My Touch' lets you visualize your touch screen taps
Show finger taps when recording your screen on iOS
How to show touches on iOS Device | by Milan Panchal | Mac O'Clock | Medium
Android Developer Options - Must Know Options For Devs - Coding Demos
GitHub - KaneCheshire/ShowTime: The easiest way to show off your iOS taps and gestures for demos and videos.
Show taps on iPhone screen when presenting - Ben Vanderberg
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Access Control Center on your iPhone - Apple Support
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How To Show Taps on an iPhone — iOS 14
How To Show Taps on an iPhone — iOS 14
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Show Touches on iPhone or iOS while screen recording - YouTube