Comparison

SDO Viewer vs Mars LTE

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

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.

Highlights
  • Download SDO images
  • Display latest solar images
  • Push notifications for new images
  • Courtesy of NASA/SDO science teams
Features
Read full description

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.

About

Mars LTE

Explore Mars with detailed information about the Perseverance rover's mission. Learn about its search for ancient life, sample collection, and technology testing for future human exploration. Discover the Ingenuity helicopter's groundbreaking flight capabilities.

Highlights
  • Perseverance rover mission details
  • Search for ancient microbial life
  • Core sample collection and storage
  • Technology testing for human exploration
  • Ingenuity helicopter flight information
Features
Read full description

See Mars the way Perseverance sees it. Mars LTE brings you the raw images sent back by the Perseverance rover from Jezero Crater: rocks, sand ripples, distant hills, the rover's own robotic arm and its shadow on the Martian ground. New photos appear as soon as they are published, and every sol since the February 2021 landing is just a few taps away. BROWSE BY SOL • Opens on the latest sol (Martian day) with photos • Step one sol back or forward, or jump straight to Latest • Pick any Earth date from the calendar and see what the rover captured that sol FILTER BY CAMERA • Navcam, Hazcam, Mastcam-Z, SuperCam, SHERLOC, SkyCam and more • See at a glance how many photos each camera took • Every thumbnail is labelled with the camera that took it FULL-SCREEN VIEWER • Swipe left and right through every photo of the sol • Pinch or double-tap to zoom into the smallest details • See the sol, camera and time each photo was taken • Save your favourites to Photos or share them with friends DESIGNED FOR IPHONE AND IPAD • Dark Mode with a deep-space theme • Pull to refresh • Fast, smooth scrolling with image caching Mars LTE has no ads and doesn't collect any personal data. Images courtesy of NASA/JPL-Caltech. Mars LTE is an independent app and is not affiliated with or endorsed by NASA or JPL.

Screenshots

SDO Viewer4 screens
Mars LTE4 screens

Verdict

The call

The clearest difference is rating: Mars LTE at 5.0 against SDO Viewer's 2.7. SDO Viewer's advantage is update cadence (every 2 months vs every 27 months) and ratings volume (6 vs 1). 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

CostPrice · In-app purchases · Ads · Monetization

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

ReceptionRating · Positive reviews · Number of ratings

Mars LTE holds the better App Store score, 5.0 against 2.7. That said, the two scores are not equally well evidenced: SDO Viewer has 6 ratings behind it against 1, so its average is the more settled of the two.

UpkeepUpdate frequency

SDO Viewer ships an update every 2 months, Mars LTE every 27 months. The most recent releases landed on November 1, 2026 and November 3, 2026 respectively.

Scorecard4 real differences · 6 level
SDO Viewer versus Mars LTE: the parameters behind the verdict, then further details
ParameterSDO ViewerMars LTE
PriceFreeFree
Rating2.7 (6 ratings)5.0 (1 ratings) — better
Positive reviews60.0% of reviews—
Number of ratings6 — better1
Update frequencyEvery 2 months — betterEvery 27 months
AdsNoNo
In-app purchasesNoNo
MonetizationFreeFree
DevicesiPhone, iPad, iPodiPhone, iPad, iPod
Requires iOS13.0 — better15.4
Further details — not scored
Size6 MB3 MB
Age rating4+4+
DeveloperJérôme DiazTaylan Atasoy

Customer experience

SDO Viewer

All ratings5 ratings
Positive20.0%
Neutral60.0%
Negative20.0%
Written reviews10 reviews
Positive60.0%
Neutral20.0%
Negative20.0%

Mars LTE

All ratings1 ratings
Positive100.0%
Neutral0.0%
Negative0.0%

In-app purchases

None

SDO Viewer

No in-app purchases

None

Mars LTE

No in-app purchases

Questions

Is SDO Viewer free?
SDO Viewer is free to download, with no in-app purchases.
Is Mars LTE free?
Mars LTE is free to download, with no in-app purchases.
Which has better reviews, SDO Viewer or Mars LTE?
Mars LTE is rated higher. SDO Viewer averages 2.7 out of 5 from 6 ratings, while Mars LTE averages 5.0 from 1 ratings.
Do SDO Viewer or Mars LTE have ads?
Neither SDO Viewer nor Mars LTE shows ads.
Which is updated more often, SDO Viewer or Mars LTE?
SDO Viewer ships an update every 2 months, and Mars LTE every 27 months. Most recently, SDO Viewer was updated on November 1, 2026 and Mars LTE on November 3, 2026.

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