Timer is a Android app developed by Jian Zheng for research data collection.Â
The following icons are used in the app:
Timer icons created by Graphics Plazza - Flaticon
Message icons created by mattbadal - Flaticon
Volume icons created by Those Icons - Flaticon
Vibration icons created by Ilham Fitrotul Hayat - Flaticon
Animation icons created by Freepik - Flaticon