Use APKPure App
Get Multitouch Visible Test old version APK for Android
See the multiple touchpoints on your device.
Meant For Developers Only:
This app shows how your phone's hardware handles multitouch. The event data is not processed in any way. The two dots are drawn exactly where the phone reports you are touching.
This app is OPEN SOURCE - audit it if you want. There are no bugs. It's the real touch data.
v1.2 - More Points