I want to install an app that's available via Cydia that also makes the source code available. Instead of jailbreaking, could I instead sign-up as a developer, pay the $100 fee, and load the app onto my iPhone myself? I'm a developer anyways so it's inevitable that I'll want to develop iOS apps. I just don't want to jailbreak my device, but I want to be able to run apps that Apple doesn't approve of, that I could otherwise run on Android.