SDO Viewer vs Hubble
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
SDO Viewer
Access and view the latest images from the Solar Dynamics Observatory. Receive push notifications when new images become available, keeping you updated on solar activity.
- Download SDO images
- Display latest solar images
- Push notifications for new images
- Courtesy of NASA/SDO science teams
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SDO Viewer is a simple application for downloading and displaying the latest images taken by the Solar Dynamics Observatory (SDO). It includes push notifications so you can be notified by a badge on the application when new images are available. SDO Viewer, by the creator of SoHO Viewer. Courtesy of NASA/SDO and the AIA, EVE, and HMI science teams.
Hubble
Explore the universe in high definition with stunning images from the Hubble Space Telescope. Discover galaxies, nebulae, and star clusters with detailed descriptions and an immersive slideshow experience. Stay updated with the latest cosmic discoveries.
- High-resolution cosmic image gallery
- Immersive slideshow mode
- Searchable database of celestial objects
- Detailed scientific descriptions
- Real-time updates for 'Picture of the Week'
- Links to NASA/ESA archives
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Embark on a breathtaking journey across the universe with Hubble. Experience the awe-inspiring beauty of deep space through the lens of the world’s most famous space telescope. From distant galaxies to colorful nebulae, the Hubble Cosmic Gallery brings the majesty of the cosmos directly to your fingertips in stunning high resolution. Fresh from Hubble: Stay updated with the "Picture of the Week." Our real-time ESA/Hubble RSS integration ensures you never miss a new cosmic discovery. Immense HD Library: Browse a curated collection of the most iconic Hubble images. Explore star clusters, supernova remnants, and the farthest reaches of the observable universe. Immersive Slideshow: Turn your device into a window to the stars. Enjoy a seamless, auto-playing slideshow experience with ambient transitions and deep-space vibes. Search & Discover: Looking for a specific nebula or galaxy? Use our lightning-fast search to find exactly what you're looking for among hundreds of high-res entries. Premium UI/UX: Designed with SwiftUI, featuring elegant glassmorphism effects, parallax carousels, and tactical haptic feedback for a truly premium feel. Learn as You Explore: Every image comes with detailed scientific descriptions and direct links to official NASA/ESA archives for those who want to dive deeper into the science. Whether you’re a space enthusiast, a student of astronomy, or simply someone who appreciates the beauty of our universe, Hubble provides a specialized, clutter-free experience for celestial exploration. Download Hubble today and witness the grandeur of the stars like never before.
Screenshots
Verdict
The clearest difference is review sentiment: SDO Viewer at 60% against Hubble's 0%. SDO Viewer also leads on ads (none vs shown) and monetization model (free vs ad-supported). Hubble's advantage is rating (4.4 vs 3.0). On price, ratings volume, in-app purchases and device support 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.
Hubble holds the better App Store score, 4.4 against 3.0. Both are backed by a comparable volume of ratings — 5 and 8 respectively. Written reviews complicate that: 60% of SDO Viewer's written reviews are positive against 0% of Hubble's, so the app with the better star average is not the one people write more warmly about.
SDO Viewer ships an update every 2 months, Hubble every 5 months. The most recent releases landed on October 7, 2026 and October 16, 2026 respectively.
| Parameter | SDO Viewer | Hubble |
|---|---|---|
| Price | Free | Free |
| Rating | 3.0 (5 ratings) | 4.4 (8 ratings) — better |
| Positive reviews | 60.0% of reviews — better | 0.0% of reviews |
| Number of ratings | 5 | 8 — better |
| Update frequency | Every 2 months — better | Every 5 months |
| Ads | No — better | Yes |
| In-app purchases | No | No |
| Monetization | Free — better | Ad-supported |
| Devices | iPhone, iPad, iPod — better | iPhone, iPad |
| Requires iOS | 13.0 — better | 17.0 |
| Further details — not scored | ||
| Size | 6 MB | 2.9 GB |
| Age rating | 4+ | 9+ |
| Developer | Jérôme Diaz | Alparslan Topbas |
Customer experience
SDO Viewer
Hubble
In-app purchases
SDO Viewer
No in-app purchases
Hubble
No in-app purchases
Questions
Is SDO Viewer free?
Is Hubble free?
Which has better reviews, SDO Viewer or Hubble?
Do SDO Viewer or Hubble have ads?
Which is updated more often, SDO Viewer or Hubble?
Other comparisons
