We did not notice any performance issues with Swift, but we also did not have to look. In addition, video is being recorded during tests to prevent cheating, but that’s about it. It presents mostly static content with a few controls. Upon launch, Test Center for iOS was featured by Apple in their "Best New Apps" category in over 50 countries.įrom a performance standpoint, Test Center is not a very performance-sensitive app. To prevent cheating, tests are monitored by real people. Test Center users receive an adaptive test to ascertain their language level. This is useful, for example, if you’re a foreigner who wants to apply for a new job or enroll at a university in the US or England, as these oftentimes require some official certificate that verifies your fluency. In addition, we launched Duolingo Test Center, which allows you to certify your knowledge of a language. If you want to learn a new language, Duolingo is the go-to way to do so on your iPhone or iPad. You might be familiar with our main app, Duolingo, a popular language learning app with over 60 million users (Dec 2014), which Apple chose as App of the Year 2013. We’ll refer to some technical concepts and provide links to existing tutorials and documentation where appropriate.įor context, we’ll first briefly explain what this new app does and what the main goals were. This post is intended for developers who don’t have too much experience with Swift and are wondering how it holds up in a real-world context. In this article, we’d like to share our experiences, give our general thoughts on the new programming language, and point out some nice things Swift provides that we can use to make our apps more solid. It has seen significant numbers of users. Recently we launched a new Swift-based app, which was then prominently featured by Apple.
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