smilemeter
nounUK /ˈsmaɪlˌmiːtə/
US /ˈsmaɪlˌmiːtər/
A smilemeter is a fun tool that shows how happy or smiley someone is.
The teacher used a smilemeter to see how cheerful the class felt after the game.
OTHER MEANINGS
2. A playful rating given to a photo or video based on how big the smiles in it are.
Her birthday video got a high smilemeter score from all her friends.
3. A device or app that counts how often people smile in a certain place.
The mall installed a smilemeter at the entrance to track friendly faces.
4. An informal way to describe how funny or pleasant something is.
That puppy video is off the smilemeter!