CosmicObserver
Yuichi Okuno Education iPhoneiPadiPod touch
CosmicObserver is a free Education app for iPhone and iPad by Yuichi Okuno. Requires iOS 18.0. Updated October 22, 2026.
- Price
- Free
- on the App Store
- Size
- 188 MB
- Age 4+
- Updated
- Oct 22
- 2026 · v1.2.1
Screenshots
About CosmicObserver
CosmicObserver lets you travel real planets — of our solar system and beyond — from an observer's first-person view. You don't pilot a ship; you drift through space with your gaze and fingertips. Lock onto stars and planets, approach, scan, and record what you observe — space as a journey, not a catalog. ■ Features ・Real astronomical bodies based on public data ・FPS view with a virtual stick for free drifting ・Scientific honesty: observed / estimated / artistic values marked by color and label ・A "Cosmic Passport" and discovery collection ・A daily destination to gently explore the cosmos ■ Cosmic Pass (one-time purchase) The solar system is free. Cosmic Pass — a single one-time purchase — unlocks all star systems, exoplanets, unlimited dailies, and the frontier beyond. Note: Exoplanet surfaces are estimations/artistic renderings, not photographs. This app is not affiliated with or endorsed by NASA. ■ In-App Purchase Cosmic Pass is a one-time purchase. There is no subscription, nothing renews, and there is nothing to cancel. After a new device or a reinstall, use "Restore purchases" on the Cosmic Pass screen or in Settings with the same Apple Account. Family Sharing is supported. Privacy Policy: https://www.rulagems.org/privacy/cosmicobserver/ Terms of Use (EULA): https://www.rulagems.org/terms/cosmicobserver/
What’s new
Version 1.2.1 · Updated October 22, 2026
- Performance improvement - Reducing app size
App privacy
The developer, Yuichi Okuno, reported these privacy practices to Apple.
Data Not Collected
The developer does not collect any data from this app.
Alternatives to CosmicObserver
Looking for apps like CosmicObserver? Here are 6 similar apps on the App Store. The highest rated is UniverseDaily - Sun & Planets (4.2/5), and 4 of the 6 are free to download.
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| App | Rating | Price | Last updated | Compare |
|---|---|---|---|---|
| CosmicObserver | – | Free | October 22, 2026 | |
| Mars Atlas: 3D Map & Rovers | – | Free | Oct 21, 2026 | Compare |
| 宇宙クイズ | – | Free | Mar 24, 2026 | Compare |
| 日本地理クイズ 楽しく学べる教材シリーズ | – | 3.99 USD | Aug 11, 2026 | Compare |
| 日本地図マスター | – | 4.99 USD | Aug 10, 2026 | Compare |
| HandyPlanet | 1.0 / 5 (1) | Free | Mar 27, 2026 | Compare |
| UniverseDaily - Sun & Planets | 4.2 / 5 (6) | Free | Oct 19, 2026 | Compare |
Compare CosmicObserver with the top alternatives: ratings, updates, ASO score and keyword gaps →