32-bit or 64-bit is a free Android utility app developed by tech-c.net. The app is designed to check whether the operating system and CPU of an Android device are 64-bit or not. Nowadays, most Android devices are equipped with a 64-bit CPU, but some manufacturers still install a 32-bit operating system on these devices, which can affect the performance of some 64-bit native library applications.

The app is simple and easy to use. Once installed, it automatically detects the operating system and CPU of the device and displays the information on the screen. The app also provides additional information about the device's processor, such as the number of cores, clock speed and architecture. With this app, users can quickly and easily check if their device is 64-bit and ensure that they can run all the latest 64-bit apps available on the market.