Deepstash is a free iPhone app that provides daily bite-sized knowledge from books, articles, videos, podcasts, and more. This education and reference app has over 1 million users who have saved more than 14 million ideas in their personal library so far. Knowledge in Deepstash comes in the form of ideas, represented as little cards you can read at a glance. Each idea belongs to a topic, from #marketing to #leadership and #philosophy, which you can follow.

The app is personalized to your interests as you choose a few topics of interest from over 4,000 topics and use Deepstash at your leisure. As you read and save ideas, Deepstash learns what you like and finds the best stories, articles, books, podcasts, and other top content to show you every day. You can also build and organize your knowledge, search and filter your ideas, and share your own or other ideas you find with your friends and colleagues on various social networks. The app is free and open to everyone, with no ads or distractions.