# SDO Viewer vs GlobeViewer Mars PRO

The clearest difference is price: SDO Viewer at Free against GlobeViewer Mars PRO's $13.99. GlobeViewer Mars PRO's advantage is review sentiment (100% vs 60%). On update cadence, ads, in-app purchases and device support there is nothing between them.

SDO Viewer is free to download; GlobeViewer Mars PRO costs $13.99 up front. Neither carries in-app purchases, so what you see is what you pay.

SDO Viewer ships an update every 2 months, GlobeViewer Mars PRO every 3 months. The most recent releases landed on June 1, 2026 and September 9, 2026 respectively.

## The numbers

| Metric | SDO Viewer | GlobeViewer Mars PRO |
| --- | --- | --- |
| Price | **Free** | $13.99 |
| Rating | **[3.0 (5 ratings)](https://appshunter.io/ios/app/sdo-viewer/id913723111/reviews)** | — |
| Number of ratings | **5** | — |
| Positive reviews | 60.0% of reviews | **100.0% of reviews** |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 2 months** | Every 3 months |
| Monetization | **Free** | Paid |
| Size | 6 MB | 142 MB |
| Requires iOS | 13.0 | **12.0** |
| Devices | iPhone, iPad, iPod | **iPhone, iPad, iPod, Mac** |
| Age rating | 4+ | 4+ |
| Developer | [Jerome Diaz](https://appshunter.io/developer/334987620) | [RAB-Software](https://appshunter.io/developer/543575684) |

## 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


### GlobeViewer Mars PRO

[App page](https://appshunter.io/ios/app/globeviewer-mars-pro/id1638102764)

Explore Mars in 3D with an interactive globe featuring all official surface designations. Zoom into high-resolution local maps for detailed views of craters and mountains. Track rover and helicopter movements with an integrated mission log.

**Highlights:** Interactive 3D Mars globe, High-resolution local maps, Official surface feature designations, Mission log since 1960, Rover and helicopter tracking, Photogrammetry detailed views, 18 language support

**Features:** Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is SDO Viewer free?

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

### Is GlobeViewer Mars PRO free?

GlobeViewer Mars PRO costs $13.99, with no in-app purchases.

### Do SDO Viewer or GlobeViewer Mars PRO have ads?

Neither SDO Viewer nor GlobeViewer Mars PRO shows ads.

### Which is updated more often, SDO Viewer or GlobeViewer Mars PRO?

SDO Viewer ships an update every 2 months, and GlobeViewer Mars PRO every 3 months. Most recently, SDO Viewer was updated on June 1, 2026 and GlobeViewer Mars PRO on September 9, 2026.

---

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