You used to be able to sideload a .ipa onto your device and get a 7-day certificate free. After the 7 days, I would turn back the time on the device to keep the app working. I have not updated my device (stayed on 9.3.3 ever since it came out) and for some reason in the last few months this trick does not work anymore, and the app will crash after 7 days. Any idea how it is figuring out its expired? I have not updated so unless they did some sneaky OTA patch for this, it should still work. Thanks.