Since the main functionality of the app is the push notification service, having users compile their own apps wouldn't really be very helpful. Users need to subscribe to our push notification channel via APNS, and they can't do that if they're compiling themselves.
We could have ignored that and built our own, less-than-realtime push service, but even still, having users compile their own apps means that our users have to pay the $99 and sign the developer agreements instead of us, and I don't think that's a very reasonable request.
I think the best solution is for us to release on the Cydia marketplace, and I think it's pretty likely we'll do that.