Comparison

A Solar System Journey vs Solar System

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

Head to head
About

A Solar System Journey

Explore our solar system with detailed information and images for each planet. Discover facts, view animated orbits, and learn about Mercury, Venus, Earth, Mars, Jupiter, Saturn, Uranus, and Neptune.

Highlights
  • Detailed planet information
  • Close-up planet images
  • Animated planet orbits
  • Facts about each planet
  • Covers all major planets
Features
Read full description

A Journey through our Solar System. This includes all of the planets, Mercury, Venus, Earth, Mars, Jupiter, Saturn, Uranus and Neptune. A few comments and facts about each planet and close up image of the planet is also included. There is also an animated orbit for the planets.

About

Solar System

Explore planets, dwarf planets, and moons in your own space using augmented reality. Walk around the solar system, view celestial bodies in scale, and access detailed information about each planet and its moons.

Highlights
  • Augmented reality solar system view
  • Explore planets, dwarf planets, and moons
  • Scale mode for size and distance comparison
  • Detailed planet and moon information
  • Interactive exploration
Features
Read full description

Place the Sun on your table or on the floor and walk among the planets in augmented reality. Get close to Saturn's rings, look at Jupiter's moons from below, or find out how far away Pluto really is when the Sun is one metre wide. THREE WAYS TO SEE IT • Learn: everything fits in one room, so you can see every planet at once. • To scale: the planets' sizes are true to each other. Earth is 4 cm, Jupiter 45 cm, and Neptune is 30 metres from the Sun. • Real scale: everything to the same scale. Earth is a 9 mm marble 107 m away; Pluto is more than 4 km from you. Follow the labels to find them. WHERE THE PLANETS ARE TODAY Every planet starts at its real position in its orbit. Speed up time to watch the years pass, or tap Today to come back. REAL PHYSICS • Orbits with their true tilt: Pluto 17°, Eris 44° • Axes that always point the same way, which is what makes the seasons • Moons that always show the same face to their planet • Triton orbiting backwards, and Io, Europa and Ganymede in their 1:2:4 dance • Haumea, the dwarf planet shaped like a rugby ball 21 WORLDS The Sun, the eight planets, five dwarf planets and seven moons. Each one has a fact sheet with NASA figures — diameter, distance, length of the day and the year, temperature, gravity, moons, who discovered it — a size comparison with Earth and a surprising fact. Great for school, for curious minds of every age, and for anyone who has wondered how big space really is. Augmented reality needs an iPhone or iPad with ARKit. On other devices the app opens in 3D mode.

Screenshots

A Solar System Journey4 screens
Solar System4 screens

Verdict

The call

The clearest difference is rating: A Solar System Journey at 4.5 against Solar System's 3.8. A Solar System Journey also leads on update cadence (every 6 months vs every 107 months) and ratings volume (437 vs 32). Solar System's advantage is review sentiment (67% vs 25%) and ads (none vs shown). On price, in-app purchases 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. Neither carries in-app purchases, so what you see is what you pay.

ReceptionRating · Positive reviews · Number of ratings

A Solar System Journey holds the better App Store score, 4.5 against 3.8. That said, the two scores are not equally well evidenced: A Solar System Journey has 437 ratings behind it against 32, so its average is the more settled of the two. Written reviews complicate that: 25% of A Solar System Journey's written reviews are positive against 67% of Solar System's, so the app with the better star average is not the one people write more warmly about.

UpkeepUpdate frequency

A Solar System Journey ships an update every 6 months, Solar System every 107 months. The most recent releases landed on November 6, 2026 and November 2, 2026 respectively.

Scorecard7 real differences · 3 level
A Solar System Journey versus Solar System: the parameters behind the verdict, then further details
ParameterA Solar System JourneySolar System
PriceFreeFree
Rating4.5 (437 ratings) — better3.8 (32 ratings)
Positive reviews25.0% of reviews66.7% of reviews — better
Number of ratings437 — better32
Update frequencyEvery 6 months — betterEvery 107 months
AdsYesNo — better
In-app purchasesNoNo
MonetizationAd-supportedFree — better
DevicesiPhone, iPad, iPod — betteriPhone, iPad
Requires iOS12.0 — better17.0
Further details — not scored
Size15 MB12 MB
Age rating4+4+
DeveloperJohn RoudaLuis Carvajal Hoyos

Customer experience

A Solar System Journey

All ratings435 ratings
Positive86.4%
Neutral4.8%
Negative8.7%
Written reviews36 reviews
Positive25.0%
Neutral22.2%
Negative52.8%

Solar System

All ratings29 ratings
Positive62.1%
Neutral6.9%
Negative31.0%
Written reviews6 reviews
Positive66.7%
Neutral0.0%
Negative33.3%

Bugs and requests

A Solar System Journey

Reported bugs

9 issues
  • App doesn't work after download
  • Cannot exit planet view
  • App crashes on opening
  • Planets rotate and orbit backwards
  • Mercury and Earth both listed as densest
Show 4 more
  • Earth listed as fifth largest planet (should be fourth)
  • Bug with dragging finger across bottom of screen shows messed up text/pictures
  • App is a slow web browser, doesn't work offline
  • Irritating rolling ads in updates

Requested features

8 requests
  • Add dwarf plants and other stuff
  • Add more moons
  • Add more photos
  • Add more data about planets
  • Add Pluto
Show 3 more
  • Improve accuracy of facts
  • Make text zoomable
  • Update app for current solar system facts

Solar System

Not enough reviews yet to summarise bugs or requests.

In-app purchases

None

A Solar System Journey

No in-app purchases

None

Solar System

No in-app purchases

Questions

Is A Solar System Journey free?
A Solar System Journey is free to download, with no in-app purchases.
Is Solar System free?
Solar System is free to download, with no in-app purchases.
Which has better reviews, A Solar System Journey or Solar System?
A Solar System Journey is rated higher. A Solar System Journey averages 4.5 out of 5 from 437 ratings, while Solar System averages 3.8 from 32 ratings.
Do A Solar System Journey or Solar System have ads?
A Solar System Journey shows ads; Solar System does not.
Which is updated more often, A Solar System Journey or Solar System?
A Solar System Journey ships an update every 6 months, and Solar System every 107 months. Most recently, A Solar System Journey was updated on November 6, 2026 and Solar System on November 2, 2026.

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