Next Big Idea is a book summary and reading club app that offers exclusive summaries written and spoken by the authors themselves. The app features over 100 book titles, including works by Adam Grant, Malcolm Gladwell, and Susan Cain. Users can listen to or read 15-minute book overviews, watch recorded live Q&As, and receive invites to live author Q&As and book launches. The app also offers 45-minute e-courses of the best nonfiction books of the year, taught by the leading thinkers themselves.

The app's unique selling point is that it offers summaries written and narrated by the authors, providing users with exclusive insights and key takeaways. The app also offers ad-free episodes of its celebrated podcast, which features immersive storytelling, narration, and curator interviews with the most interesting authors at work today. Users can also receive daily insights from leading thinkers through the "Idea of the Day" feature.

Testimonials from users praise the app for its deep insights and recommend it to anyone who enjoys getting deeper insight into books. The app is also praised for its unique approach to book summaries, which sets it apart from other book summary apps like Blinkist and Uptime.

Overall, Next Big Idea is a must-have app for life-long learners who want to go deeper and learn from the world's leading experts. With its exclusive summaries, e-courses, and ad-free podcast episodes, the app offers a smarter version of you that awaits.