Sometimes it's ok to make an app that is a little piece of beautiful candy. From an email I wrote UC this month:
It's starting to get nice out.
You probably still want to make more of an effort to get up and walk around more during the day, right?
Do you like pretty things.
I've been using this app that does nothing other than chime every hour, half hour, or quarter hour.
It reminds me to get up, shake the zombie out and let my brain unravel.
(And if you've ever played Portal, you'll appreciate the Voice option).