Handsfree is a utility tool that automatically answers incoming calls if a headset (wired or Bluetooth) is connected. With this app, there is no need to touch your phone or headset to answer calls. It is a useful tool for those who are driving or have their hands full.

However, it is essential to note that starting from Android 5.x (Lollipop), applications cannot answer incoming calls without rooting the device. Therefore, Handsfree will not work on new devices or after upgrading the OS. The developer, Aleksey Grichenko, has announced that there will be no further development of the app due to this reason.

Overall, Handsfree is a practical app for those running on older Android versions. If you have an older device, it is worth giving this app a try.