Use APKPure App
Get Arduprofe Stepper Motor old version APK for Android
Stepper motor control via Bluetooth
Remote control by degrees of a stepper motor.
It requires programming the Arduino and a HC-06 Bluetooth module.
Download Program for the Arduino at:
https://create.arduino.cc/editor/ProfeGarcia/652ff5a7-d114-41de-8fb2-e735cc71eef6/preview