Comparison

Solar System&Celestial Objects vs 3D Solar System Tour

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

Head to head
About

Solar System&Celestial Objects

Features
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Easy learning about solar system, stars, celestial objects, constellations, spacecraft with pictures ,sounds and quiz games. If you who always search and learn a quiz app like these, this app is for you ① Solar system Flash card app. ② Stars Quiz app. ③ Celestial objects quiz app. ④ Stars history and information app. ⑤ Constellations name cards. ⑥ Guess solar system app. Features: - You can learn many kinds of stars. - You can play solar system quiz. - Many information related to solar system, stars, celestial objects, constellations, spacecraft - Support Quiz feature. - Support 5 languages: English, Japanese, Korean, Chinese, Vietnamese

About

3D Solar System Tour

Features
Read full description

The universe, right in your pocket. "3D Solar System Tour" is an easy-to-use planetarium app that recreates the Solar System with beautiful 3D graphics, soothing BGM, and detailed voice narration. No complex controls required. Just relax and listen to the stories of the stars. 【Main Feature: Audio Guide Tour】 Narrated Solar System Tour The highlight of this app is the "Tour Mode," which automatically takes you on a journey through all the planets. Just like a museum guide, a calm voice explains the mysteries and characteristics of each planet. Perfect for relaxing before bed or learning something new during your commute. (Available via Rewarded Ads or Premium Plan) 【Other Features】 Beautiful 3D Simulation Explore the Sun, Mercury, Venus, Earth, Moon, Mars, Jupiter, Saturn, Uranus, and Neptune. Rotate planets with a swipe or zoom in to see their textures. Experience the Vastness: "Real Scale Mode" Switch to scientifically accurate size ratios and distances with a single tap. Note: In this mode, the Sun is massive, while other planets appear merely as tiny dots. While not visually detailed, this mode offers a powerful educational perspective on how vast and empty space truly is. Simple Warp Travel In "Exploration Mode," you can experience the atmosphere of traveling to planets aboard a spaceship. Note: This is a simple visual transition to jump to your destination, not a complex flight simulator. Interesting Astronomical Data Core Data: Diameter, Mass, Orbital/Rotational periods. Travel Time: See how long it would take to reach each planet using the "Apollo" spacecraft or the modern "Parker Solar Probe." 【Premium Features】 The app is free to download. Upgrading to the Premium Plan unlocks: ・Ad-Free Experience: Remove all ads. ・Unlimited Audio Tours: Access the full guided tour without watching reward ads. Note: An internet connection is required to use this app.

Screenshots

Solar System&Celestial Objects4 screens
3D Solar System Tour3 screens

Verdict

The call

The clearest difference is in-app purchases: Solar System&Celestial Objects at none against 3D Solar System Tour's 1. Solar System&Celestial Objects also leads on iOS requirement (12.0 vs 15.0). 3D Solar System Tour's advantage is update cadence (every 3 weeks vs every 6 weeks). On price, ads 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. 3D Solar System Tour sells 1 one-off in-app purchase. Solar System&Celestial Objects asks for nothing beyond the download.

UpkeepUpdate frequency

Solar System&Celestial Objects ships an update every 6 weeks, 3D Solar System Tour every 3 weeks. The most recent releases landed on October 25, 2026 and October 6, 2026 respectively.

Scorecard3 real differences · 3 level
Solar System&Celestial Objects versus 3D Solar System Tour: the parameters behind the verdict, then further details
ParameterSolar System&Celestial Objects3D Solar System Tour
PriceFreeFree
Update frequencyEvery 6 weeksEvery 3 weeks — better
AdsYesYes
In-app purchasesNo — betterYes
DevicesiPhone, iPad, iPodiPhone, iPad, iPod
Requires iOS12.0 — better15.0
Further details — not scored
Size62 MB74 MB
Age rating4+4+
DeveloperNIKI TECHTakashi Imamura

In-app purchases

None

Solar System&Celestial Objects

No in-app purchases

1 purchases

3D Solar System Tour

One-time1
  • Premium Plan$5.00

Questions

Is Solar System&Celestial Objects free?
Solar System&Celestial Objects is free to download, with no in-app purchases.
Is 3D Solar System Tour free?
3D Solar System Tour is free to download, with in-app purchases available.
Do Solar System&Celestial Objects or 3D Solar System Tour have ads?
Both Solar System&Celestial Objects and 3D Solar System Tour show ads.
Which is updated more often, Solar System&Celestial Objects or 3D Solar System Tour?
Solar System&Celestial Objects ships an update every 6 weeks, and 3D Solar System Tour every 3 weeks. Most recently, Solar System&Celestial Objects was updated on October 25, 2026 and 3D Solar System Tour on October 6, 2026.

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