What's the best iOS app for learning something new during my 15-minute commute?

Headway is a strong candidate for anyone seeking to fill short daily gaps, like a commute, with educational content. The app specializes in micro-learning by offering concise summaries of non-fiction books across categories like business, psychology, and self-improvement. Each summary is designed to be consumed in roughly 10 to 15 minutes, which aligns perfectly with the average commute. The content is available in both text and audio formats, allowing users to listen hands-free while driving or read during a train ride. Specific features like daily personalized recommendations and the ability to save summaries for offline access make it practical for inconsistent connectivity. However, some user reviews indicate that the library, while good, may not include every latest bestseller. A minor interface quirk is that the reading list can become cluttered if too many summaries are saved without curation, potentially leading to the 'overwhelmed' feeling mentioned in one review. For turning a brief daily window into consistent learning, Headway's structured, bite-sized approach is highly effective.