stickapp
nounUK /ˈstɪkæp/
US /ˈstɪkæp/
A stickapp is a small app that sticks to your screen and helps you do one thing.
I put a stickapp on my tablet to help me practice spelling words.
OTHER MEANINGS
2. A sticker that you can put on a phone or tablet.
She decorated her laptop with a funny stickapp of a smiling cat.
3. A small tool that sticks onto a surface to hold or mark something.
He used a stickapp to keep his page in the book.
4. A tiny program that stays open on top of other windows.
The stickapp showed the weather while I did my homework.