This screen recording app makes it very convenient to create tutorial, promotional video, comment about your game and gameplay or record video chat. It uses official APIs, so it requires no root. The App requires Android 5.0 or up.

# Provide record quality options
# Record audio from the mic and mixed into the screencast video automatically
# To stop recording, turn off screen, shake your device or touch the app notification icon.
# No watermarks
# Record at full screen resolution
# Support to trim, view, delete, and share video on Youtube, Drive, Dropbox, or Facebook etc.
# Provide countdown timer,the countdown timer will wait until you are ready to start and snap at the moment you want.
# For device running Android 6.0. You need must allow OVERLAY_PERMISSION and other permission