Hubble vs Discover Mars
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
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.
Discover Mars
Explore stunning, high-definition images captured on Mars by NASA rovers. View the latest photos, zoom in for detail, and learn fascinating facts about the Red Planet's atmosphere, gravity, and temperature.
- View latest Mars rover images
- Slideshow mode for full-screen viewing
- Zoom into high-definition photos
- Save images to your device
- Explore Mars' atmosphere, gravity, and temperature
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The Discover Mars app provides easy access to images taken on Mars by the NASA Mars rovers. - View the latest images taken on Mars by the Perseverance, Curiosity, Opportunity, and Spirit rovers. - Tapping on a photo launches it in slideshow mode to view the full high-definition image. You can double-tap to zoom into a photo or tap on the Share icon to save images directly onto your iPhone. - The Mars tab provides interesting visuals about Mars, such as its atmosphere, gravity, temperature, and much more. Designed by Spencer Everett Developed by Monte Thakkar
Screenshots
Verdict
The clearest difference is review sentiment: Discover Mars at 100% against Hubble's 0%. Discover Mars also leads on rating (5.0 vs 4.4) and ads (none vs shown). 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.
Discover Mars holds the better App Store score, 5.0 against 4.4. Both are backed by a comparable volume of ratings — 9 and 12 respectively. Written reviews point the same way: 0% of Hubble's written reviews are positive against 100% of Discover Mars's.
Hubble ships an update every 5 months, Discover Mars monthly. Both last shipped on November 3, 2026.
| Parameter | Hubble | Discover Mars |
|---|---|---|
| Price | Free | Free |
| Rating | 4.4 (9 ratings) | 5.0 (12 ratings) — better |
| Positive reviews | 0.0% of reviews | 100.0% of reviews — better |
| Number of ratings | 9 | 12 — better |
| Update frequency | Every 5 months | Monthly — better |
| Ads | Yes | No — better |
| In-app purchases | No | No |
| Monetization | Ad-supported | Free — better |
| Devices | iPhone, iPad | iPhone, iPad, iPod — better |
| Requires iOS | 17.0 | 13.0 — better |
| Further details — not scored | ||
| Size | 2.9 GB | 8 MB |
| Age rating | 9+ | 4+ |
| Developer | Alparslan Topbas | Manthan B Thakkar |
Customer experience
Hubble
Discover Mars
In-app purchases
Hubble
No in-app purchases
Discover Mars
No in-app purchases
