this reminds me of another art ios app that showed various watercolored circles that represented your mood..

what was cool about that..is that you could see a macro-pointillist view of the whole year.

Does anyone remember its name?

Maybe you looking this.

MOODA by OLIVESTONE Lab. https://apps.apple.com/us/app/mooda/id1476256748

nope.. but close.

Maybe this one. This app has visualize mood in year.

See 7th screenshot on App Store.

Daylio Journal

https://apps.apple.com/app/daylio-journal/id1194023242