Thanks Mags and Robbie. Yes, I'm sure there are phone apps showing your sobriety time (Seems like everything has been done).
However, I'd like to have it on my smartwatch. I don't always carry my phone with me, but my watch is literally on me all the time. I'm not foreign to programming, and I would have something to do. Always satisfying when you see something you've made, works.
I've done a similar thing before with a Gambling Control app (that was a phone/web app). I could lock money into a 'vault', that I could set to unlock in a chosen amount of days, or it would release fragments of it at specific intervals.
I don't own a traditional bank, believe it or not. It worked by converting my fiat to cryptocurrency, and was stored as such. There was just one problem, I had access to the database, so I could edit the data and release it anyways. However, I think I've figured out a workaround, I'll just leave it at that, or I'd just be rambling on about tech stuff.