Cobalt
Cobalt is an AI-powered mobile app by Optu Corp that converts non-fiction bestsellers into tailored book summaries on iOS and Android.
Open productWhat it does
About Cobalt
Cobalt is a mobile application developed by Optu Corp for iOS and Android devices that synthesizes non-fiction bestsellers into goal-tailored summaries. Powered by a dedicated artificial intelligence system, Cobalt allows readers to align summaries with specific objectives such as Actionable steps, Scientific context, or Key Takeaways. Premium subscribers can dynamically adjust summary length in real time and read content offline, while free summary articles are available on the app's blog. The platform is designed to help users evaluate books for full reading, absorb main concepts efficiently, and review prior reads.
- Availability:
- launched
- Access:
- freemium
- Format:
- software
- Platform:
- ios
- Platform:
- android
Pricing at launch: Cobalt offers free summary articles on its blog alongside a Premium tier that includes a 7-day free trial.
Core capabilities
Goal-Tailored AI Summarization
Converts non-fiction bestsellers into structured summaries tailored to user learning goals, including Actionable insights, Scientific focus, or Key Takeaways.
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