Sounds like a worthwhile project to me
You might want to check out what the most popular threads are and the things almost everyone posts about.
I could see a lot of things that could be included or thought about
:
- calendar to "x" off days sober
- counter for sober days - i guess that could work with a formula to autopopulate a number between the stop date and today's date
- recovery, motivational, funny quotes (everyone loves quotes) either text or picture quotes
- smiley face moods for each day
- a contact list for online friends and maybe a few details about them
- place to input meetings offline or online chats/meetings
- alarm to let them know to check in for the day or some other event
- place to keep a list of movies/book suggestions on recovery
LOL ok I will stop.... I don't know how big/simple/complicated you want to go. Maybe you could pick just one thing and make a good app and add on later.