I'll come later to explain more. Just try and let me know if you encounter any problem.
It's free but I let you make the choice to make a donation via paypal (if you think this tool and basically my creations are helpful, if you want to encourage my next projects...)
Only one negative point, you'll need a jailbroken iDevice. (Sorry for that ...)
Download iOS exporter
You have to have some knowledge in jailbroken devices to put your exported ipa to your device. I won't support this side.