UPDATE:

This became an actual product called Weel Planner, now available in the iOS App Store.

I'm working on a new thing, based on some of my thoughts on time in general.

It's a calendar app for iOS based around a 24 hour analog clockface. (see sketch below) It's designed to have as little "math" thinking as possible, and keeps time fixed instead of being stretchy and squishy, which happens to be good for people with ADHD and dyscalculia.