Hi Gilbert van Veen,
The mentioned rejection cause “Apps or metadata that mention the name of any other mobile platform will be rejected.” in general may be because that there is a mention of Apple competitors in your app, in app advertisement or the app description in Apple store. Please consult the link above for more information.
We may suggest the following:
- Double-check again the app metadata - name, descriptions, ratings, rankings, screenshots, localization, etc. for compliance with the App Store submission guidelines. This may also include the screenshots you are submitting in the submission form (for example, they should not contain any mention or a reference to another platform). Do not forget to check the name and description you are entering in the Telerik Platform project too.
- Searching for а similar problem in the iOS/developer community
- Usually the Apple team is providing the reason for the rejection based on the guidelines and also by specifying an actual issue in the given submission. Perhaps they will give a better explanation after another email or by submitting the binary package for approval again.
You can find some more info about iOS App Store Approval Tips and Tricks although there it is not mentioned this specific reason.
I hope that this helps and your app will be approved.