A free app for Android, by PICCHAT.
This is a perfect app for screen recording. You can use it to record the whole screen, the app you are using, or the game you are playing. The app is free, and you can use it to record up to 1 hour of gameplay. It is also possible to create and save your presets, so you can record the same thing multiple times and change the settings.
REC is the best way to make a video of your gameplay.
It is an excellent tool for making tutorials or promo videos. It has a beautiful UI and a simple interface.