USB Settings is a free Android application developed by Duck Software that allows users to change the USB connection type on their device. With this app, users can easily switch between Picture Transfer Protocol (PTP) and Media Transfer Protocol (MTP) modes depending on their needs.

One of the main advantages of this app is that it can be used on various versions of Android. However, it is worth noting that for versions 6.0 and above, the app may require users to turn on developer options in order to function properly.

Overall, USB Settings provides a simple and convenient way for users to manage their USB connection settings, making it a useful utility tool for Android devices.