I've tried everything I can think of to find the original dev. He's called Richard Martin but other than that he's a ghost.
There's an issue with suspending the app when the screen is off. It could be a simple fix, the app is 8 years old and like I said it's open source.
If you're bored or fancy having a quick look to see if something obvious jumps out please let me know, thanks!
edit: apparently it was member rsmartin, on this site who made it. I've messaged even though he's inactive, just in case.