SoHO Viewer vs Mars Today
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
SoHO Viewer
Access and view the latest images from the Solar and Heliospheric Observatory (SoHO). Receive push notifications when new images are available, keeping you updated on solar activity. This app is a convenient tool for anyone interested in space imagery.
- Download latest SoHO images
- Display solar images
- Push notifications for new images
- Badge notification for new images
- Image courtesy of SOHO consortium
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SoHO Viewer is a simple application for downloading and displaying the latest images taken by the Solar and Heliospheric Observatory (SoHO). It includes push notifications so you can be notified by a badge on the application when new images are available. It was quoted as “one of the ten best free applications to have on your iphone if you like stargazing:” http://www.networkworld.com/news/2010/112210-free-iphone-stargazing-apps.html It appears in Mars 2015 edition of Sky And Telescope, page 70. Images are courtesy of SOHO consortium. SOHO is a project of international cooperation between ESA and NASA. If you had like to see images taken by Solar Dynamics Observatory (SDO) please use the SDO Viewer application.
Mars Today
Access the latest images of Mars from NASA's Curiosity rover. Browse current photos or explore past images from Curiosity, Spirit, and Opportunity by SOL. Bookmark and share your favorite discoveries.
- Latest Mars images from Curiosity
- View past images from Spirit and Opportunity
- Browse by Mars SOL
- Bookmark favorite images
- Easy sharing functionality
- No login required
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Mars Today brings you the latest images of Mars from NASA’s Curiosity rover. You can view the current photos or jump to any Mars SOL to view past photos from Curiosity, Spirit, and Opportunity. Bookmark your favorite images and easily share with your friends. No login required. Explore the red planet today!
Screenshots
Verdict
The clearest difference is rating: Mars Today at 5.0 against SoHO Viewer's 3.4. Mars Today also leads on review sentiment (100% vs 69%) and update cadence (monthly vs every 2 months). SoHO Viewer's advantage is ratings volume (19 vs 4) and iOS requirement (13.0 vs 15.2). On price, ads, in-app purchases and monetization model 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.
Mars Today holds the better App Store score, 5.0 against 3.4. Both are backed by a comparable volume of ratings — 19 and 4 respectively. Written reviews point the same way: 69% of SoHO Viewer's written reviews are positive against 100% of Mars Today's.
SoHO Viewer ships an update every 2 months, Mars Today monthly. The most recent releases landed on July 21, 2026 and June 11, 2026 respectively.
| Parameter | SoHO Viewer | Mars Today |
|---|---|---|
| Price | Free | Free |
| Rating | 3.4 (19 ratings) | 5.0 (4 ratings) — better |
| Positive reviews | 69.1% of reviews | 100.0% of reviews — better |
| Number of ratings | 19 — better | 4 |
| Update frequency | Every 2 months | Monthly — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free | Free |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 13.0 — better | 15.2 |
| Further details — not scored | ||
| Size | 5 MB | 4 MB |
| Age rating | 4+ | 4+ |
| Developer | Jerome Diaz | James Buckhouse |
Customer experience
SoHO Viewer
Mars Today
In-app purchases
SoHO Viewer
No in-app purchases
Mars Today
No in-app purchases
Questions
Is SoHO Viewer free?
Is Mars Today free?
Which has better reviews, SoHO Viewer or Mars Today?
Do SoHO Viewer or Mars Today have ads?
Which is updated more often, SoHO Viewer or Mars Today?
Other comparisons
