Comparison

Real Solar System vs Solar System Clock

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

Head to head
About

Real Solar System

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This solar system simulator reflects actual planetary position information. When the app is launched, the sun is positioned 20 cm in front of the device, based on the device's position. Around it, the eight main planets of the solar system and the celestial body to be observed orbit. The orbits are displayed as if they were trajectories. The position of each planet is calculated based on actual values. # Features - x] Realistic solar system with ARKit - x] Orbits of the 8 planets are displayed. - x] Planets are realistic textures imported from USDZ files. - x] Planet positions are calculated based on real values (using Horizons API) - x] The object to be observed can be changed. - x] Display of the orbit of the object of interest - x] Calculate the position of the target object based on actual values (using the Horizons API). - x] Adjustable speed (minus value for reverse rotation) - x] Zoom function (zoom in/zoom out) - x] Toggle the display of the text information and the coordinate axis (New!) ## How to use 1. when you launch the application, you will be asked for "permission to use camera" at the first startup. If you allow it, an ARKit session will start. 2. 2. a coordinate axis will be placed 20 cm in front of you, based on the device's position. 3. Tap the "Load Planet" button to load the planet model. Just wait a moment. 4. The 8 main planets of the solar system and the object to be observed will orbit around it. 5. Move the device to observe the solar system from various angles. 6. Tap the buttons at the bottom of the screen to adjust the speed and zoom. 7. You can change the object to be observed from the menu in the upper right corner of the screen. 1. Halley's Comet 2. Hayabusa2 & Ryugyu 3. Voyager 1 & 2 4. New Horizons & Pluto 5. Cassini (New!) 6. OSIRIS-REx & Bennu 7. Comparison of Circle and Ellipse 8. Geocentric theory (New!) 8. Toggle the display of the text information and the coordinate axis from the menu in the upper right corner of the screen. (New!)

About

Solar System Clock

Features
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See the positions of all planets in our Solar System based on the current date. Or, you can set your own custom date to see the alignment of our planets from a future date or a past date. You can use this app to find out the best time to watch a planet in the sky by finding out when it will be closest to Earth.

Screenshots

Real Solar System4 screens
Solar System Clock3 screens

Verdict

The call

The clearest difference is update cadence: Solar System Clock at every 2 days against Real Solar System's monthly. On price, ads, in-app purchases and device support there is nothing between them.

Scored on Price ยท Rating ยท Positive reviews ยท Number of ratings ยท Update frequency ยท Ads ยท In-app purchases ยท Monetization ยท Best chart rank ยท Devices ยท Requires iOS

CostPrice ยท In-app purchases ยท Ads ยท Monetization

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

UpkeepUpdate frequency

Real Solar System ships an update monthly, Solar System Clock every 2 days. The most recent releases landed on October 7, 2026 and October 9, 2026 respectively.

Scorecard1 real difference ยท 5 level
Real Solar System versus Solar System Clock: the parameters behind the verdict, then further details
ParameterReal Solar SystemSolar System Clock
PriceFreeFree
Update frequencyMonthlyEvery 2 days โ€” better
AdsNoNo
In-app purchasesNoNo
DevicesiPhone, iPadiPhone, iPad, Apple Watch โ€” better
Requires iOS17.616.6 โ€” better
Further details โ€” not scored
Size302 MB5 MB
Age rating4+4+
DeveloperMasaya NagaokaMateusz Andrzejczuk

In-app purchases

None

Real Solar System

No in-app purchases

None

Solar System Clock

No in-app purchases

Questions

Is Real Solar System free?
Real Solar System is free to download, with no in-app purchases.
Is Solar System Clock free?
Solar System Clock is free to download, with no in-app purchases.
Do Real Solar System or Solar System Clock have ads?
Neither Real Solar System nor Solar System Clock shows ads.
Which is updated more often, Real Solar System or Solar System Clock?
Real Solar System ships an update monthly, and Solar System Clock every 2 days. Most recently, Real Solar System was updated on October 7, 2026 and Solar System Clock on October 9, 2026.

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