Wifi/Mobile Data Switch is a free Android app developed by JTMZ Group that allows users to easily switch between wifi and mobile data with just one click. The app is compatible with Android 9.0 and is listed under the Utilities & Tools category.

The app's main feature is its ability to quickly switch between wifi and mobile data connections. With just one click, users can turn off wifi and turn on mobile data, or vice versa. The app also has the ability to turn on both wifi and mobile data at the same time, or turn them both off.

Overall, Wifi/Mobile Data Switch is a useful tool for anyone who needs to quickly switch between wifi and mobile data connections on their Android device. Its simple and straightforward design makes it easy to use, and its compatibility with Android 9.0 ensures that it will work on most modern Android devices.