# iOS Applications
source: https://developer.mastercard.com/ob-accept-payments/documentation/developer-support/sdk/ios/index.md

If you are creating an iOS app, we recommend using our iOS SDK (or the cross-platform React Native SDK).

App to app authentication is supported in all cases.

* [Using the Connect iOS SDK](https://developer.mastercard.com/ob-accept-payments/documentation/developer-support/sdk/ios/ios-sdk/index.md)