I came here for the same reason. I noticed that my iSub is crashing since IOS 8 upgrade
I read that an iSub update for IOS 8 was submitted so I don't know how long that will take, Other than the IOS 8 update submission it's no longer being developed as far as I know, so the reason I'm posting is that I would love to see madevil or someone take over the iSub code and development.
iSub is a great app that needs an owner. I'd be cool with calling it something else and I'd pay another $5 for it, maybe more. I'm not sure how all the licensing works but that would be great and would give someone a good base to start with. If I was a programmer I'd jump right on it, but... I'm not.
Or, give us another app with features like iSub and that will work too! I'm up for suggestions.