Shortly, you run the app in German, but first you need to know how to change the language of the simulator or device, even if it is running in a language you cannot read. This way, you do not get stuck in German or Arabic and end up resetting or even re-installing your device to get back to normal. These instructions are for the simulator, but they are easily adaptable to devices:
1. If you are running an application, go back home by choosing Hardware > Home or by pressing Ctrl-Shift-H.
2. Open the Settings app.
3. Choose General from the main Settings page on the iPhone/iPod touch or the left column on the iPad. It has a smaller version of the geared Settings icon. Note which item this is, as you may need to navigate ...