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Free Registration

Sing Up today for free!

1. Install FlatUse App

To register for FlatUse, install the App on your mobile device from App Store!

App Store Play Store

2. Register your Number

Register with your local mobile phone number and get per sms an pin-code.

3. Enter Pin Code

The FlatUse System will sent you an SMS to your registered phone number. With the pin-code you can finish your registration and use the pin for a future login as an password.

3 simple steps to make cheap phone calls!


Simply download the app from your App Store.

Top Up Credit

Load balance comfortably and easy online. Or with a FlatUse Cash Card.

Low cost calls!

Worldwide cheap calls from 1 cent. No hidden costs!

You need help?

If some things are still unclear, here are the most important questions and answers.

FAQ & Manuals

Download the App

Available for free in your app store to download!

App Store Play Store