Solar System 3D vs Encyclopedia
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Solar System 3D
Explore our solar system in stunning 3D. Navigate through planets, moons, and celestial bodies, accessing detailed Wikipedia information. Experience realistic simulations of Earth's seasons, day-night cycles, and planetary motion.
- 3D space navigation
- Full solar system model
- Wikipedia information
- Spinning and orbiting simulation
- Earth's seasonal tilt
- Day-night simulation
- Real scale factors
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Solar System 3D is an educational application for anyone interested in our amazing space. Take a journey to our solar system with this app now. Features: - 3D space navigation - Entire solar system with the Sun, 8 major planets and the Moon. - Wikipedia information about each astro - Timer setting with speed up options to learn the spinning and orbiting basics of the solar system - Fantastic simulation of the Earth's seasonal tilt degree and day-night simulation based on your device global location. - Fair clouds, ambient night view and atmosphere simulation for our planet Earth. - Real scale factor on the planet size, spin/orbit speed and distance to sun. In-app purchases: - No Ads - HD Texture and 3D solid surface with shadow projection - Convenient Wallpaper screenshot button to hide the menus and freeze the space from your favorite solar system angle
Encyclopedia
Explore the solar system with extensive articles and high-definition images. This app offers comprehensive information, engaging content, and a user-friendly interface, making it suitable for both children and adults interested in space.
- Thousands of articles and HD photos
- Comprehensive solar system information
- Engaging and easy-to-understand content
- Offline availability
- Badge collection for reading
- Intuitive user interface
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Explore the Solar System, its planets and the worlds beyond Earth. Read 386 articles, search for a topic, and save discoveries to revisit. START WITH FIVE FREE ARTICLES New readers can choose any five different articles. Your chosen articles stay unlocked, and revisiting them never uses another choice. Existing readers keep previously granted access. MAKE DISCOVERIES YOUR OWN • Search article titles and full text • Follow links between related topics • Save articles and return to your reading position • Continue recent reading and track your progress • Explore connections through the timeline and graph • Find article sources and image credits inside the app CHOOSE YOUR ACCESS Own the full encyclopedia with a one-time purchase for complete offline reading. Or choose monthly or annual Premium for the full encyclopedia plus AI chat grounded in this subject's articles. Eligible new Premium subscribers receive a three-day introductory trial. Subscriptions renew automatically unless canceled through your App Store account. Current local prices and terms appear before purchase. Restore Purchases recovers eligible previous purchases. Earlier full-version ownership includes encyclopedia and offline access; Premium AI requires a subscription. Internet access is required for AI chat and purchases. AI answers may contain errors; consult the linked sources. Article text is derived from Wikipedia. Images come from appropriately licensed Wikimedia Commons and other open sources. Source links, licenses and credits are available in the app. Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/
Screenshots
Verdict
Solar System 3D and Encyclopedia both sit at 3.7 stars, but that hides the real split: 83% of Encyclopedia's written reviews are positive against 68% of Solar System 3D's. Solar System 3D's advantage is iOS requirement (4.3 vs 15.0). On price, rating, ratings volume and update cadence 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
Both are free to download. Solar System 3D sells 4 one-off in-app purchases and Encyclopedia sells 1 one-off in-app purchase. Whichever you choose, the download price is not the number that matters.
On the App Store both sit at effectively the same score — 3.7 for Solar System 3D against 3.8 for Encyclopedia. Both are backed by a comparable volume of ratings — 31 and 14 respectively. Written reviews are what separate them: 68% of Solar System 3D's written reviews are positive against 83% of Encyclopedia's.
Solar System 3D ships an update every 2 weeks, Encyclopedia every 3 weeks. Both last shipped on October 21, 2026.
| Parameter | Solar System 3D | Encyclopedia |
|---|---|---|
| Price | Free | Free |
| Rating | 3.7 (31 ratings) | 3.8 (14 ratings) — better |
| Positive reviews | 67.9% of reviews | 83.3% of reviews — better |
| Number of ratings | 31 — better | 14 |
| Update frequency | Every 2 weeks — better | Every 3 weeks |
| Ads | No | No |
| In-app purchases | Yes | Yes |
| Monetization | Free with in-app purchases | Free with in-app purchases |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 4.3 — better | 15.0 |
| Further details — not scored | ||
| Size | 54 MB | 496 MB |
| Age rating | 4+ | 4+ |
| Developer | ZHIREN GUAN | Good Spider, LLC |
Customer experience
Solar System 3D
Encyclopedia
In-app purchases
Solar System 3D
- Remove Ads$0.99
- High Definition Texture$0.99
- Wallpaper Screenshot$0.99
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- Special Package Offer$0.99
Encyclopedia
- Full Version$2.99
Questions
Is Solar System 3D free?
Is Encyclopedia free?
Which has better reviews, Solar System 3D or Encyclopedia?
Do Solar System 3D or Encyclopedia have ads?
Which is updated more often, Solar System 3D or Encyclopedia?
Other comparisons
