owoTrack is a free Android application developed by Finoki in the Utilities & Tools category. It allows you to send your device's motion sensor data to supported server applications, which can then be used for body tracking in SteamVR games like VRChat and NeosVR. This is especially useful for those who want to emulate Vive pucks for body tracking.

The application can be used with the owoTrackVR driver and overlay to perform hip tracking and locomotion, or with Slime VR software for full-body tracking with legs. You can use a minimum of 5 devices such as phones, Wear OS devices, or standalone SlimeVR trackers for this purpose.

owoTrack is open source, and its source code is available on GitHub. However, it is worth noting that some phone vendors may automatically kill the app when running in the background or when the screen is off. You can visit dontkillmyapp.com for instructions on how to solve this issue.

For more information and support, you can join the owoTrackVR Discord server or the SlimeVR Discord server if you're interested in using it with SlimeVR or getting standalone SlimeVR trackers.