Comparison

SDO Viewer vs Hubble

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

Hubble

Explore the universe with stunning images and videos from the Hubble Space Telescope. Discover detailed information about deep space objects and view 3D models. Enjoy an immersive educational experience.

Highlights
  • Browse 550+ high-resolution space photos
  • Detailed information on space objects
  • Full-screen slideshow mode
  • Zoomable image gallery
  • 220+ educational videos
  • Interactive 3D models
Features
Read full description

With the "Hubble: Deep Space 2" application, our aim is to provide you with the information obtained from current researches about 'the Universe' in a compact way. Here you will find many fascinating images, some of which you will want to examine in detail and some you will want to read in detail. You will have a nice user experience and obtain detailed information while navigating through the beautiful photos taken by Hubble Space Telescope. FEATURES • In the "Browse" section, you will be able to quickly browse through hundreds of photos (550+) and also read detailed information about them. • In the "SlideShow" section, you will be able to browse through hundreds of impressive photos in full screen size and feel as if you were in the orbit at that moment. If you wish, you will be able to get detailed information about these impressive sights by tapping the Info button. • In the "Gallery" section, you will be able to see all the photos impressively, show what you want in full screen and when you want to examine them in detail, you can zoom in with the help of your fingers. • For those who do not want to be contented with just beautiful photos, there are many videos (220+) in the "Videos" section. • You will get detailed information about "Deep Space Objects", • You will also find three-dimensional models in the "3D" section.

Screenshots

SDO Viewer4 screens
Hubble4 screens

Verdict

The call

SDO Viewer and Hubble both sit at 3.0 stars, but that hides the real split: 60% of SDO Viewer's written reviews are positive against 0% of Hubble's. SDO Viewer also leads on in-app purchases (none vs 1) and ads (none vs shown). On price, rating, ratings volume 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

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. Hubble sells 1 one-off in-app purchase. SDO Viewer asks for nothing beyond the download.

ReceptionRating · Positive reviews · Number of ratings

On the App Store both sit at effectively the same score — 3.0 for SDO Viewer against 3.0 for Hubble. Both are backed by a comparable volume of ratings — 5 and 2 respectively. Written reviews are what separate them: 60% of SDO Viewer's written reviews are positive against 0% of Hubble's.

UpkeepUpdate frequency

SDO Viewer ships an update every 2 months, Hubble every 23 months. The most recent releases landed on October 7, 2026 and October 16, 2026 respectively.

Scorecard5 real differences · 5 level
SDO Viewer versus Hubble: the parameters behind the verdict, then further details
ParameterSDO ViewerHubble
PriceFreeFree
Rating3.0 (5 ratings)3.0 (2 ratings)
Positive reviews60.0% of reviews — better0.0% of reviews
Number of ratings5 — better2
Update frequencyEvery 2 months — betterEvery 23 months
AdsNo — betterYes
In-app purchasesNo — betterYes
MonetizationFree — betterFree with in-app purchases
DevicesiPhone, iPad, iPodiPhone, iPad, iPod
Requires iOS13.013.0
Further details — not scored
Size6 MB1.7 GB
Age rating4+9+
DeveloperJérôme DiazAlparslan Topbas

Customer experience

SDO Viewer

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

Hubble

All ratings2 ratings
Positive50.0%
Neutral0.0%
Negative50.0%
Written reviews1 reviews
Positive0.0%
Neutral0.0%
Negative100.0%

In-app purchases

None

SDO Viewer

No in-app purchases

1 purchases

Hubble

One-time1
  • Hubble: Deep Space 2 - Ad-Free$0.99

Questions

Is SDO Viewer free?
SDO Viewer is free to download, with no in-app purchases.
Is Hubble free?
Hubble is free to download, with in-app purchases available.
Which has better reviews, SDO Viewer or Hubble?
SDO Viewer and Hubble are both rated 3.0 out of 5 on the App Store, from 5 and 2 ratings respectively.
Do SDO Viewer or Hubble have ads?
Hubble shows ads; SDO Viewer does not.
Which is updated more often, SDO Viewer or Hubble?
SDO Viewer ships an update every 2 months, and Hubble every 23 months. Most recently, SDO Viewer was updated on October 7, 2026 and Hubble on October 16, 2026.

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