Great app but crashes since iOS7 :/

Zombies Run 5K is awesome. I hated running before and now, I look forward to it !
One problem though : the app has a tendency to crash when you are running and unlock your phone to check your time for example. If there were a fix for that, the app would definitely be worth 5 stars !

Elfinay about Zombies, Run! 5k Training, v1.1.1