I have deleted and installed version 1.00.1 (this is the previous version, right?) on my 5s several times. Each time it will go through the welcome and disclaimer screens then crash after clicking the Get Started button and every subsequent launch. The 4s doesn't have the 7.1.1 iOS update like the 5 does and also is running AR 1.00.1. I won't update that one for now as it's working.