memotool
nounUK /ˈmeməʊtuːl/
US /ˈmemoʊtuːl/
A memotool is a thing you use to help you remember something.
I use a memotool called a sticky note to remember my homework.
OTHER MEANINGS
2. A small app or feature on a phone or computer that helps you save quick notes.
She typed the shopping list into her memotool app.
3. A short phrase or trick that helps you recall a list or fact.
The memotool 'Never Eat Shredded Wheat' helps kids remember the compass directions.
4. A physical object, like a string on a finger, used as a reminder.
He tied a knot in his handkerchief as a memotool for the meeting.