GitHub - burhanuday/Cemently-Cement-Reminder-App: An Android to-do reminder app that uses Alarm Manager and shows notification. Also uses SQLite to store data in the backend
How to Set a Reminder on Android in 2 Different Ways
To Do Reminder with Alarm for Android - Download | Cafe Bazaar
global | How to set a reminder on Android-Carlcare
19 Best Reminder App(s) for iOS & Android Users - nTask