Sauce Labs supports Selenium tests for iOS through its open-source mobile automation framework Appium, allowing developers to run native, hybrid, and web app tests on iOS simulators or real devices. With Appium, developers can write tests in their preferred language and run them in parallel, accelerating testing time by 10x. The Sauce Labs cloud platform provides scalability and support for various iOS configurations, making it an ideal choice for organizations testing mobile apps. Appium supports cross-platform testing, any programming language, and seamless cloud testing, enabling developers to test their app as-is without requiring an SDK recompile.