Celestial Dances vs Astro Viewer
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Celestial Dances
Explore the orbital mechanics of planets, moons, and exoplanets. This app visualizes celestial movements based on concepts from "A Little Book of Coincidence." Discover intriguing patterns and relationships within our solar system and beyond.
- Explore solar system planet motions
- Visualize moon orbits
- Discover exoplanet systems
- Based on 'A Little Book of Coincidence'
- Highlights Earth-Venus relationship
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This app invites you to explore the relative motions of our solar system's planets, their moons, and several exoplanet systems. It is based on ideas presented in "A Little Book of Coincidence" by John Martineau. Are the amazing patterns created by these orbiting bodies just a coincidence, or is something more than that going on? Take a look and see what you think. Be sure to check out the special relationship between the Earth and Venus.
Astro Viewer
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Astro Viewer is your ultimate gateway to the universe, powered by multiple world-class space agencies and observatories. Access thousands of stunning astronomical images from NASA, ESA/Hubble, ESA/Webb, and ESO. Whether you are a student, an educator, or a space enthusiast, explore the cosmos through multiple telescopes and perspectives like never before. WHAT'S NEW: MULTI-AGENCY EXPANSION Now featuring four major astronomical image sources: - NASA Open API - Space exploration imagery - ESA/Hubble Space Telescope - Iconic optical observations - ESA/Webb Space Telescope - Infrared universe revelations - ESO Public Archives - Ground-based astronomical excellence Experience the universe through the world's most powerful telescopes! KEY FEATURES Break Language Barriers: Search in Any Language - Supports 130+ languages via intelligent auto-translation - Type "Andromeda" in Korean, Japanese, French, or any other language - Smart search engine queries multiple databases and delivers unified results - Auto-translation instantly converts descriptions of galaxies, nebulae, and black holes to your native language Educational & Bilingual Tools - Original vs. Translated Toggle: Switch between translated and original English text with a single tap—perfect for learning astronomical terms! - Detailed Metadata: Access photographer credits, observation dates, telescope specifications, and celestial keywords - Multi-Source Attribution: See which telescope/observatory captured each image Massive Astronomical Library - Multi-Agency Integration: Thousands of high-resolution images from NASA, Hubble, Webb, and ESO - Curated Catalog: Browse hand-picked selections of famous celestial objects (M31, M42, NGC series) - Smart Filtering: Focused purely on stunning celestial imagery—no administrative photos - Diverse Perspectives: Compare optical (Hubble), infrared (Webb), and ground-based (ESO) views Save & Share the Wonder - High-Resolution Downloads: Save breathtaking space wallpapers directly to your gallery - Contextual Sharing: Share images with friends via social media—text adapts to your language preference - Multi-Source Credits: Proper attribution to NASA, ESA, or ESO included Immersive Experience - Interactive Viewer: Zoom and pan to explore every stellar detail - Dark Mode UI: Sleek interface minimizing eye strain while viewing space imagery - Seamless Navigation: Browse across multiple archives effortlessly WHY ASTRO VIEWER? The universe is vast, but exploring it shouldn't be complicated. Astro Viewer combines the scientific depth of world-leading space agencies with the accessibility of modern translation technology. See the cosmos through Hubble's optical clarity, Webb's infrared vision, ESO's ground-based power, and NASA's exploration legacy—all in one app. It's not just a gallery; it's a comprehensive learning tool that brings the universe to your fingertips. Download Astro Viewer today and start your multi-telescope journey through the stars! DISCLAIMER This application is a third-party educational tool developed by an independent developer. It utilizes publicly available APIs from NASA, ESA (European Space Agency), and ESO (European Southern Observatory) to fetch astronomical images, but is NOT affiliated with, endorsed by, or an official product of NASA, ESA, or ESO. Data sources: - NASA's Open API (api.nasa.gov) - ESA/Hubble Space Telescope Archive (esahubble.org) - ESA/Webb Space Telescope Archive (esawebb.org) - ESO Public Image Archive (eso.org) According to their respective media usage guidelines, this content is generally available for educational and non-commercial use. Hubble and Webb are joint projects of NASA and ESA. ESO operates ground-based observatories in Chile.
Screenshots
Verdict
The clearest difference is update cadence: Astro Viewer at every 4 months against Celestial Dances's every 30 months. Astro Viewer also leads on device support (3 vs 1). Celestial Dances's advantage is iOS requirement (9.0 vs 15.6). On price, ads and in-app purchases there is nothing between them.
Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS
Both are free to download. Neither carries in-app purchases, so what you see is what you pay.
Celestial Dances ships an update every 30 months, Astro Viewer every 4 months. The most recent releases landed on October 3, 2026 and October 15, 2026 respectively.
| Parameter | Celestial Dances | Astro Viewer |
|---|---|---|
| Price | Free | Free |
| Rating | 3.0 (2 ratings) — better | — |
| Positive reviews | 100.0% of reviews | — |
| Number of ratings | 2 — better | — |
| Update frequency | Every 30 months | Every 4 months — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free | — |
| Devices | iPad | iPhone, iPad, iPod — better |
| Requires iOS | 9.0 — better | 15.6 |
| Further details — not scored | ||
| Size | 16 MB | 20 MB |
| Age rating | 4+ | 4+ |
| Developer | Thomas Bretl | Heebok Lee |
In-app purchases
Celestial Dances
No in-app purchases
Astro Viewer
No in-app purchases
Questions
Is Celestial Dances free?
Is Astro Viewer free?
Do Celestial Dances or Astro Viewer have ads?
Which is updated more often, Celestial Dances or Astro Viewer?
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