Rules of technical operation, the Instruction on movement, the Instruction on signaling of underground in one application!

A simple and convenient interface and full autonomy will allow you to use the application in any situation

If you do not like advertising and you want more features, or just want to support the development, then we have a PRO version of the application: https://play.google.com/store/apps/details?id=dscdeveloper.android.metropro

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