This is iOS control software for MJKZZ focus stacking automatic rails
Instructions:
After starting up this app, it will automatically search for a BLE (Bluetooth Lower Energy aka 4.0) enabled StackRail device. If no device is found, it will advise to turn on your StackRail device.
If a BLE enabled StackRail is found, the app will automatically connects to it and the main screen will show up and you should be able to control the rail.
Since there are not much data to be entered, each data entry can be done by first selecting (tapping) on the field. The selected field will have a blue background. Then quickly swipe your finger across the field to change its value. Swiping to the left will decrease the value and to the right will increase the value
Double tapping on Start Position or End Position will set it with the value of current position
Please also read user manual for StackRail for PC for explanation of each field