Kepler: Sleep in Space
Cosmic stories to drift off
Only for iPhone
Free · In‑App Purchases · Designed for iPhone. Not verified for macOS.
iPhone
New voyage added: "Slow descent over Europa." Six minutes of soft narration through Jupiter's quietest moon. Drift off as you arrive.
The universe is the most patient narrator. Kepler is a sleep app built around a single idea: that the cosmos, told slowly, is the easiest place to fall asleep.
Each night you open Kepler, you board a quiet voyage. A scientist walks you through the rings of Saturn. A long-haul astronaut describes the silence between Earth and Mars. A research station reports back from a moon you've never heard of. The narration is soft, unhurried, and deliberately a little dull — because dull is what your nervous system needs at 11:47 p.m.
Stories are written for grown-ups, not children. No princesses, no dragons, no plot twists. Just slow movement through real and imagined places in space, with ambient cosmic textures underneath — solar wind, hydrogen hum, the low resonance of a quiet spacecraft.
What's inside:
• Original sleep stories, 5 to 6 minutes each — or 18 to 20 minutes for a full series
• Narrators trained for the lower vocal register that helps you drift off
• Ambient cosmic soundscapes you can listen to on their own
• Sleep timer that fades out gently rather than cutting
• Offline downloads for nights without Wi-Fi
• Optional sleep tracking, off by default — your sleep is yours
Kepler is not a meditation app pretending to do sleep. It's not a kids' bedtime app pretending to be adult. It's a sleep app, and its only job is to get you to the part of the night where you stop trying.
If you've used other sleep, calm, or meditation apps and wished there was just one cohesive world to fall asleep inside — Kepler is that world. Space, every night, narrated to you.
New stories arrive every two weeks. Premium voices and the full library unlock with subscription. The first three voyages are free, forever.
Counting stars instead of sheep.
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SUBSCRIPTION DETAILS
Kepler offers auto-renewable subscriptions that unlock the full library of sleep stories and premium narrators:
• Weekly Access
• Kepler Membership (monthly)
• 3-Month Access
• Yearly Access
The subscription title, length, and price are shown in the app before you purchase. Payment is charged to your Apple ID account at confirmation of purchase. Your subscription renews automatically for the same period and price unless auto-renew is turned off at least 24 hours before the end of the current period. You can manage or cancel your subscription anytime in your App Store account settings.
Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/
Privacy Policy: https://pmoffice.space/privacy-kepler.html
Ratings & Reviews
- This app hasn’t received enough ratings or reviews to display an overview.
The developer, Astonio Ltd, indicated that the app’s privacy practices may include handling of data as described below. For more information, see the developer’s privacy policy .
Data Used to Track You
The following data may be used to track you across apps and websites owned by other companies:
- Purchases
- Identifiers
- Usage Data
Data Linked to You
The following data may be collected and linked to your identity:
- Purchases
- Identifiers
- Usage Data
Accessibility
The developer has not yet indicated which accessibility features this app supports. Learn More
Information
- Seller
- Astonio Ltd
- Size
- 63.8 MB
- Category
- Health & Fitness
- Compatibility
Requires iOS 15.1 or later.
- iPhone
Requires iOS 15.1 or later. - iPod touch
Requires iOS 15.1 or later. - Mac
Requires macOS 12.0 or later and a Mac with Apple M1 chip or later. - Apple Vision
Requires visionOS 1.0 or later.
- iPhone
- Languages
- English
- Age Rating
4+
- 4+
- In-App Purchases
Yes
- Kepler PRO $3.99
- Lifetime Access $99.99
- Kepler PRO $9.99
- Kepler PRO $49.99
- Copyright
- © Astonio Ltd