# SDO Viewer vs Mars Info Lite

The clearest difference is rating: Mars Info Lite at 4.4 against SDO Viewer's 3.0. Mars Info Lite also leads on review sentiment (96% vs 60%) and ratings volume (200 vs 5). SDO Viewer's advantage is iOS requirement (13.0 vs 17.0). On price, update cadence, ads and in-app purchases there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

Mars Info Lite holds the better App Store score, 4.4 against 3.0. That said, the two scores are not equally well evidenced: Mars Info Lite has 200 ratings behind it against 5, so its average is the more settled of the two. Written reviews point the same way: 60% of SDO Viewer's written reviews are positive against 96% of Mars Info Lite's.

SDO Viewer ships an update every 2 months, Mars Info Lite every 3 months. The most recent releases landed on June 1, 2026 and September 20, 2026 respectively.

## The numbers

| Metric | SDO Viewer | Mars Info Lite |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [3.0 (5 ratings)](https://appshunter.io/ios/app/sdo-viewer/id913723111/reviews) | **[4.4 (200 ratings)](https://appshunter.io/ios/app/mars-info-lite/id1093071808/reviews)** |
| Number of ratings | 5 | **200** |
| Positive reviews | 60.0% of reviews | **96.0% of reviews** |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 2 months** | Every 3 months |
| Monetization | Free | Free |
| Size | 6 MB | 210 MB |
| Requires iOS | **13.0** | 17.0 |
| Devices | iPhone, iPad, iPod | **iPhone, iPad, Mac, Apple TV** |
| Age rating | 4+ | 4+ |
| Developer | [Jerome Diaz](https://appshunter.io/developer/334987620) | [Viktor Goltvyanytsya](https://appshunter.io/developer/556365139) |

## What reviewers say

### SDO Viewer

[App page](https://appshunter.io/ios/app/sdo-viewer/id913723111)

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.

**Highlights:** Download SDO images, Display latest solar images, Push notifications for new images, Courtesy of NASA/SDO science teams

**Features:** macOS Compatibility

**In-app purchases:** none


### Mars Info Lite

[App page](https://appshunter.io/ios/app/mars-info-lite/id1093071808)

Explore the surface of the Red Planet with an interactive 3D globe. Discover significant locations like volcanoes, craters, and mountains, and view detailed information about each. This version offers a curated selection of points of interest.

**Highlights:** Interactive 3D Mars globe, Rotate, tilt, and zoom controls, Pinpoint key locations, View location details (name, type, size, coordinates), List of selectable locations

**In-app purchases:** none

**What reviewers like**

- 👍 Easy to navigate and self-explanatory
- ✨ Fantastic graphics and useful information
- 🚀 Responsive navigation around Mars
- 💡 Great for learning about Mars
- 🌟 Awesome info graphics and data

**What reviewers complain about**

- 🐛 Pinpoints shifted 90 degrees in longitude
- 🔭 Can't zoom in close enough
- 🖼️ Picture can be unsteady when scrolling text

**Reported bugs**

- Pinpoints shifted 90 degrees in longitude
- Crashes immediately on iPhone 4s

**Requested features**

- Implement geomorphology data
- Add ability to zoom out and see Mars alignment with other planets
- Add VR support
- Add apps for other planets


## Frequently asked questions

### Is SDO Viewer free?

SDO Viewer is free to download, with no in-app purchases.

### Is Mars Info Lite free?

Mars Info Lite is free to download, with no in-app purchases.

### Which has better reviews, SDO Viewer or Mars Info Lite?

Mars Info Lite is rated higher. SDO Viewer averages 3.0 out of 5 from 5 ratings, while Mars Info Lite averages 4.4 from 200 ratings.

### Do SDO Viewer or Mars Info Lite have ads?

Neither SDO Viewer nor Mars Info Lite shows ads.

### Which is updated more often, SDO Viewer or Mars Info Lite?

SDO Viewer ships an update every 2 months, and Mars Info Lite every 3 months. Most recently, SDO Viewer was updated on June 1, 2026 and Mars Info Lite on September 20, 2026.

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*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*