App info
- Installs
- 100+
- Category
- Books & Reference
- Content rating
- Everyone
- Version
- 2.0.0
- Released
- Aug 12, 2025
- Last updated
- 18 Jun 2026
- In-app purchases
- Yes
- Contains ads
- No
- In-app price range
- $3.99 - $139.99 per item
- Promo video
- Yes
- Requires Android
- 7.0
Screenshots
Rankings
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What's newin version 2.0.0
- Nouvelle Interface - Résumés Audio - Parcours Thématiques - Bibliothèque de concepts clés - Bibliothèque de podcasts - Résumés personnalisables - Correction de bugs - Nouvel Onboarding
About this app
The essence of 300+ personal development books to read in 5 minutes.
Read full description
Boost your personal development in just 5 minutes a day. 🚀 Short on time to read? Cobalt transforms the world's bestsellers into concise and impactful reading summaries. Access the wisdom of the greatest authors, right in your pocket. Why download Cobalt? Cobalt is the ultimate tool for curious minds and busy people. Whether you're an entrepreneur, a student, or simply looking to improve, we condense knowledge for you. 📚 AN ELITE LIBRARY • 300+ summaries of essential books (and new ones added every week). • Key topics: Productivity, Leadership, Finance, Psychology, Business, Relationships, and Health. • Rediscover the classics or explore the latest releases. ⏱️ LEARN AT YOUR OWN PACE • Flexible formats: Read the essentials in 5, 10, or 20 minutes. • No fluff: We extract concrete ideas that can be applied immediately. • Offline mode: Download your summaries for the subway, plane, or areas without internet access. 🎯 A TAILORED EXPERIENCE • AI Recommendations: The app learns from your preferences to suggest your next read. • Personalized Lists: Create your favorites library to revisit key concepts. • Progress Tracking: Visualize your progress and stay motivated. 💡 BECOME THE MOST INTERESTING PERSON IN THE ROOM With Cobalt, always have an anecdote, a concept, or an innovative idea to share. Develop your general knowledge and mindset without sacrificing your schedule. Download Cobalt now and start your transformation, one summary at a time.