If you want to have todo list/notes with checkboxes and don’t ~care about~ want any online functionality, I would suggest using Another Notes. Also, I uses p!n to show my todos-of-the-day right inside the notifications.
Edit: I mean “don’t want”, not “don’t care”
Me too, I remember I used an app called bxActions to set to activate between vibrate and sound mode on my old Samsung phone