Use APKPure App
Get PinView Library - Demo 1.0 old version APK for Android
Demo cho thư viện PinView: Một widget view Pin cho Android.
This App is only a Demo of the library:
https://github.com/DavidPizarro/PinView
A Pin view widget for Android. PinView has a feature that allows you to find out when they have completed all parameters. Support for Android 3.0 and up. It supports portrait and landscape mode, saving the state.
Feel free to use it all you want in your Android apps.