Datapass is a free Android app developed by Martin Schall, designed to track your data usage. This app is the developer's first creation and was developed when he was 15 years old. The app is aimed at users of the D1 network and can be used by anyone. It provides users with information about their data usage, including their current data speed, data usage for the billing month, and more.

While the app may have some errors or may not meet all requirements, it offers a quick and easy way to keep track of your data usage. Datapass is a simple app that can be used to view your data usage with just a few clicks. The app is based on the official website of Telekom, and it provides users with all the information they need about their data usage.

Overall, Datapass is a useful app for anyone looking to track their data usage on their Android device. It's easy to use and provides accurate information about your data usage. Give it a try if you're looking for a simple and free way to monitor your data usage on the D1 network.