Penny Mobil is a free Android app developed by congstar Services GmbH that provides easy access to your personal Penny Mobil customer account. Logging in is straightforward and supports fingerprint login.

The app offers the following features:

• Display of current prepaid credit
• Display of current data consumption
• Top-up prepaid credit (via cash code or automatically)
• Switch tariffs
• Book, switch and cancel options
• View and change customer data
• View and change authentication PIN

The Penny Mobil app is continuously developed, and the developers welcome feedback and constructive suggestions.

Overall, the app is user-friendly and allows you to manage your prepaid account with ease. The display of current prepaid credit and data consumption is particularly useful, and the option to top-up credit via cash code or automatically is convenient. The ability to switch tariffs and book, switch, and cancel options is also a plus. However, it would be great if the app could provide more detailed information about the tariffs and options available.

If you're a Penny Mobil customer, this app is definitely worth trying out.