〇 About This is app locker for parent of elementary school children. You can set app lock schedule and available time. To unlock , child must work arithmetic exercises. Use YouTube and other apps that children often use to study effectively with restrictions. can do. 〇 Installed functions ・ Specify usage time for each application ・ Specify break time for each app ・ Specify prohibited times for each application · Solves arithmetic problems when unlocking. 〇 Other If your child is just havin