Comparison

Solar System Scope vs Star Walk 2 Pro

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

Head to head
About

Solar System Scope

Explore and discover the solar system and outer space with realistic 3D visualizations and detailed celestial simulations. This app offers an educational and engaging experience for all ages, featuring a comprehensive encyclopedia and a night sky observatory.

Highlights
  • 3D Encyclopedia of celestial bodies
  • Realistic 3D visualizations
  • Night sky observatory with time simulation
  • Accurate orbital parameter calculations
  • High-quality planetary and moon maps
  • Multilingual support
Features
Read full description

Solar System Scope is a fun way of Exploring, Discovering and Playing with the Solar System and Outer Space. Solar System Scope (or just Solar) contains many views and celestial simulations, but most of all - it brings you closer to the furthest reaches of our world and lets you experience lots of fantastic space sceneries. It aspires to be the most illustrative, easy to understand and simple to use space model. - 3D Encyclopedia In Solar’s unique encyclopedia you will find the most interesting facts about every planet, dwarf planet, every major moon and more – and everything is accompanied by realistic 3D visualizations. Solar’s encyclopedia is available in 10 languages: English, Spanish, German, Russian, Italian, Korean and Slovak. More languages are coming soon! - Nightsky Observatory Enjoy Stars and constellation of the night sky as viewed from any given location on Earth. You can point your device at the sky to see all objects in their proper place, but you can also simulate Night sky in the past or in the future. Now with advanced options that let you simulate ecliptic, equatorial and azimuthal line, or grid (among other things). - Scientific Instrument Solar System Scope calculations are based on up-to-date orbital parameters published by NASA and let you simulate celestial positions at any given time. - For Everyone Solar System Scope is well suited for all audiences and ages: It is enjoyed by space enthusiasts, teachers, scientists, but Solar is successfully used even by children of 4+ years of age! - Unique Maps We are proud to present a very unique set of planetary and moon maps, that let you experience a true-color space as never before. These accurate maps are based on NASA elevation and imagery data. Colors and shades of the textures are tuned according to true-color photos made by Messenger, Viking, Cassini and New Horizon spacecrafts, and the Hubble Space Telescope. Basic resolution of these maps is for free – but if you would like the best experience, you can check out the highest quality, which is available with In-App purchase. - Join our vision Our vision is to build the ultimate space model and bring you the deepest space experience. And you can help - try Solar System Scope and if you like it, spread the word! And don’t forget to join the community and vote for new features on our homepage.

About

Star Walk 2 Pro

Explore the night sky with this augmented reality stargazing app. Point your device to identify thousands of stars, planets, constellations, and celestial events in real-time. Discover astronomical news and plan your observations with a comprehensive sky map.

Highlights
  • Real-time sky map
  • Augmented reality mode
  • 3D constellation models
  • Time machine feature
  • Deep sky object identification
  • Night mode for comfortable viewing
  • Visible Tonight section for events
Features
Currently charting
Read full description

Star Walk 2 is an exquisite stargazing app enabling you to explore the night sky through the screen of your device. Make an effortless journey through thousands of stars, comets, constellations, and other celestial bodies. All you have to do is point your device to the sky! ⁕ BEST OF 2014: The next generation of the best-selling Star Walk, winner of Apple Design Award, used by over 10 million people ⁕ The app taps your device’s sensors and the GPS to determine the exact position of stars, planets, constellations, comets, ISS, satellites, meteor showers, etc., in the night sky. “She’s a beauty.”- The Next Web “Star Walk 2 is a terrific introduction to astronomy for young and old. It’s also handy for serious stargazers for observing planning.” - TUAW “Star Walk 2 is visually stunning.” - PCmag “This is a very beautiful and unusual application that turns your phone into a real planetarium.” - Free apps for me “For those who enjoy the original app, Star Walk 2 is worth the upgrade — the interface is gorgeous. Anyone with even a passing interest in astronomy should grab Star Walk 2.” - iLounge “It is worth every penny.” - PadGadget Star Walk 2 in travel & tourism industry: ‘Rapa Nui Stargazing’ based on Easter Island uses Star Walk 2 for sky observations during its astronomical tours. ‘Nakai Resorts Group’ in the Maldives uses Star Walk 2 during astronomy meetings for its guests. Main features: ◆ Map of the sky in real time ◆ Stunning 3D models of constellations and other sky objects ◆ “Time machine” ◆ Deep sky objects ◆ Info about celestial bodies and sky events ◆ The sky at different wavelengths ◆ Augmented reality mode ◆ Night mode ◆ "What's new" section with the latest astronomical news ◆ "Visible Tonight" section ► Star Walk 2 shows the real-time map of the sky on your screen in whatever direction you are pointing the device. As you hold your phone up and point it towards the sky, the star map follows your motions using the built-in gyroscope to match the map on your screen to the stars seen from your location. ► What's up in the sky tonight? Open the "Visible Tonight" section of Star Walk 2 and quickly find out all upcoming astronomical events and celestial objects visible for your location. ► Be aware of the latest news from the world of space and astronomy. The app's "What's new" section will tell you about the most outstanding celestial events in time. ► Touching a clock-face icon at the upper-right corner of the screen allows you to select any date and time and watch the sky of different periods. ► Get a deeper understanding of the constellation`s scale and place in the night sky. Enjoy observing wonderful 3D models of constellations, turn them upside down, read their stories. ► Find and study deep sky objects such as meteor showers, planetary nebulae, star clusters, etc. ► The night-mode will make your stargazing at night time more comfortable. Star Walk 2 is the sequel to the original Star Walk, which is one of the most popular apps for stargazing. New in Star Walk 2: -Incredible 3D models of celestial bodies -All-new stunning design -New interface in vibrant colours for retina displays -Atmospheric visual and sound effects, stirring soundtrack -Exclusive handcrafted artwork for constellations The app contains In-App Purchases. If you enjoy exploring the stars, then our app is a must-have for your arsenal. Start your best stargazing experience right now!

Screenshots

Solar System Scope4 screens
Star Walk 2 Pro4 screens

Verdict

The call

The clearest difference is price: Solar System Scope at Free against Star Walk 2 Pro's $2.99. Solar System Scope also leads on iOS requirement (13.0 vs 15.0). Star Walk 2 Pro's advantage is rating (4.7 vs 4.4) and ratings volume (67K vs 894). On review sentiment, 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

Solar System Scope is free to download; Star Walk 2 Pro costs $2.99 up front. Solar System Scope sells 1 one-off in-app purchase and Star Walk 2 Pro sells 8 one-off in-app purchases. Whichever you choose, the download price is not the number that matters.

ReceptionRating · Positive reviews · Number of ratings

Star Walk 2 Pro holds the better App Store score, 4.7 against 4.4. That said, the two scores are not equally well evidenced: Star Walk 2 Pro has 67K ratings behind it against 894, so its average is the more settled of the two. Written reviews complicate that: 77% of Solar System Scope's written reviews are positive against 72% of Star Walk 2 Pro's, so the app with the better star average is not the one people write more warmly about.

UpkeepUpdate frequency

Solar System Scope ships an update every 4 months, Star Walk 2 Pro every 2 months. The most recent releases landed on October 24, 2026 and October 25, 2026 respectively.

Scorecard6 real differences · 5 level
Solar System Scope versus Star Walk 2 Pro: the parameters behind the verdict, then further details
ParameterSolar System ScopeStar Walk 2 Pro
PriceFree — better$2.99
Rating4.4 (894 ratings)4.7 (67K ratings) — better
Positive reviews76.7% of reviews — better72.1% of reviews
Number of ratings89467K — better
Update frequencyEvery 4 monthsEvery 2 months — better
AdsNoNo
In-app purchasesYesYes
MonetizationFree with in-app purchasesFree with in-app purchases
Best chart rank—#38 — better
DevicesiPhone, iPad, iPodiPhone, iPad, iPod
Requires iOS13.0 — better15.0
Further details — not scored
Size154 MB357 MB
Age rating4+4+
DeveloperINOVE, s.r.o.Vito Technology Inc.

Customer experience

Solar System Scope

All ratings882 ratings
Positive83.7%
Neutral4.5%
Negative11.8%
Written reviews240 reviews
Positive76.7%
Neutral6.3%
Negative17.1%

Star Walk 2 Pro

All ratings67,054 ratings
Positive93.7%
Neutral2.7%
Negative3.6%
Written reviews574 reviews
Positive72.1%
Neutral6.4%
Negative21.4%

User reviews

Solar System Scope

From 894 App Store ratings

What we love

  • 🚀 Amazing app
  • 👍 Great for learning about space
  • 🌟 Beautifully created
  • 🔭 Realistic and detailed
  • 🎓 Excellent for education

Room to improve

  • 🐛 Crashes frequently
  • 🔀 Orientation issues
  • 🔒 Upgrade required for full functionality
  • 🕰️ Difficulty pinpointing specific dates

Star Walk 2 Pro

From 67K App Store ratings

What we love

  • 🚀 Accurate sky mapping
  • 🌟 Visually stunning graphics
  • 🔍 Detailed information on celestial objects
  • 🧑‍🎓 Educational and informative
  • 🔔 Helpful notifications about sky events

Room to improve

  • 🔔 Too many notifications
  • 💰 Expensive in-app purchases required for full features
  • 🐛 Occasional glitches and bugs
  • 🧭 Difficulty calibrating and aligning the app with the sky
  • 🌍 Limited support for Southern Hemisphere users

Bugs and requests

Solar System Scope

Reported bugs

4 issues
  • Crashes when dragging Jupiter
  • Upside-down orientation on tablets
  • Unable to restore purchases
  • Freezes and crashes on launch

Requested features

5 requests
  • Add more celestial bodies (Messier objects, Planet 9/10, black holes, etc.)
  • Enable exploration of other galaxies and deep space objects
  • Improve telescope/zoom functionality
  • Add more moons and irregular satellites
  • Implement continental drift and solar system evolution

Star Walk 2 Pro

Reported bugs

3 issues
  • App crashing on launch for some users
  • Incorrect celestial object positioning in certain locations
  • Notifications not working as expected

Requested features

5 requests
  • Customizable notification settings
  • More detailed information on moons and satellites
  • Option to disable animated constellation overlays
  • Improved time/date controls for planning future sky viewing
  • Support for equatorial mounts and telescopes

In-app purchases

1 purchases

Solar System Scope

One-time1
  • HQ Textures / No Ads$5.99
8 purchases

Star Walk 2 Pro

One-time8
  • Constellations of AvengersFree
  • Satellite Finder in Sky Above$0.99
  • Constellations 3D on Sky Map$0.99
Show 5 more
  • Deep Space Objects Explorer$0.99
  • Explore Solar System Objects$0.99
  • Planets of the Solar System$0.99
  • Space Explorer: Kids Cartoons$0.99
  • Star Tracker AR: Full Version$2.99

Questions

Is Solar System Scope free?
Solar System Scope is free to download, with in-app purchases available.
Is Star Walk 2 Pro free?
Star Walk 2 Pro costs $2.99, and also offers in-app purchases.
Which has better reviews, Solar System Scope or Star Walk 2 Pro?
Star Walk 2 Pro is rated higher. Solar System Scope averages 4.4 out of 5 from 894 ratings, while Star Walk 2 Pro averages 4.7 from 67K ratings.
Do Solar System Scope or Star Walk 2 Pro have ads?
Neither Solar System Scope nor Star Walk 2 Pro shows ads.
Which is updated more often, Solar System Scope or Star Walk 2 Pro?
Solar System Scope ships an update every 4 months, and Star Walk 2 Pro every 2 months. Most recently, Solar System Scope was updated on October 24, 2026 and Star Walk 2 Pro on October 25, 2026.

Other comparisons