Whoah. Very neat. The changing colours are ideal if you need a visual timer. I can already see one possible application for this for workouts for “box breathing” (5s in / 5s hold / 5s out / 5s hold … repeat). The trainee needs clear visual prompts to do the exercise correctly. This illustrates why having something big works. Sure it would be nicer to have a clock circle than a numeric counter–but right now I think you discovered a quite workable solution to a practical issue.
FYI, I have a bunch of timer apps on mobile phone. But none of them is ideal. I suspect we could eventually have in TW very flexible, elegant, scalable, visual/(+ maybe audio) timer systems.
Tx! TT