What's the best iOS app for downloading and watching online courses offline?

Teachable online courses is an iOS application that excels in providing offline access to educational content, making it a strong option for learners on the move. With a user rating of 4.6 out of 5, the app enables downloads of up to 25GB of course materials, including videos and documents, which can be accessed without an internet connection. This feature is particularly useful for commuters, travelers, or those in areas with unreliable Wi-Fi. The interface is designed for ease of use, with straightforward menus and a search function that helps locate specific downloaded courses quickly. However, some users report that offline access requires navigating to a 'school' and using the search bar to find content, rather than having a dedicated offline section, which can be slightly cumbersome initially. Despite this, the app reliably plays back downloaded media once the method is understood. Another limitation is the inability to reset course progress, which may affect users who wish to retake courses repeatedly. Overall, Teachable online courses balances robust offline capabilities with a polished user experience, though minor interface quirks exist.