Encyclopedia vs Solar System AR 4D
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
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 386 illustrated articles about planets, moons, dwarf planets, asteroids, comets, astronomy, missions, discoveries, and the science of our solar system. Search article titles and full text, open clear article pages, and follow linked topics without losing your place. Reading progress and themed badges help you build a path through the collection. Explore the solar system from several angles: - Timeline view follows discoveries, missions, scientists, and changing ideas. - Graph view reveals relationships between worlds, spacecraft, people, and concepts. - Map view adds geographic context for observatories, discoveries, and missions where source material provides it. - References and image credits keep source attribution visible. Thirty articles are free to read. A one-time purchase unlocks the complete encyclopedia for offline reading, including maps, timelines, and graphs. Monthly or annual Premium includes the complete encyclopedia plus AI chat, with a seven-day free trial for eligible new subscribers. People who bought the original Full Version can restore permanent offline encyclopedia access; AI chat remains a separate Premium feature. AI chat answers grounded questions about the solar system and links back to relevant articles so you can continue reading and check the context. Article text is adapted from Wikipedia contributors under Creative Commons Attribution-ShareAlike 4.0. Every article includes source, revision-history, and image-credit links. Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/
Solar System AR 4D
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Solar System AR 4D – Explore Space in Augmented Reality Learn about the planets in Arabic, English, and French. No cards required. Embark on an extraordinary journey through the solar system. With AR technology, 3D models of planets appear in your environment, making space exploration fun, interactive, and educational. Key Features: - Augmented Reality Space Exploration: Point your camera at any flat surface (floor, wall, desk) and watch planets appear in stunning 3D. - Interactive 3D Models: Rotate, resize, and zoom in on each planet with simple touch gestures. - Photo Capture: Take pictures with the planets and share your cosmic journey with family and friends. - Audio Pronunciation: Hear the names of planets spoken aloud in your chosen language. - Multilingual Learning: Supports Arabic, English, and French for a truly global learning experience. Why Students, Parents, and Teachers Love It: - Makes learning about space exciting and easy to understand - Builds astronomy knowledge in three major languages - Turns complex science into a fun, hands-on experience - Works without cards or additional tools Perfect for schools, homeschooling, and young explorers. Traveling through space has never been this easy or this exciting – bring the solar system to life with AR.
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Verdict
The clearest difference is iOS requirement: Solar System AR 4D at 12.0 against Encyclopedia's 15.0. On price, update cadence, ads and in-app purchases 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. Encyclopedia sells 1 one-off in-app purchase and Solar System AR 4D sells 1 one-off in-app purchase. Whichever you choose, the download price is not the number that matters.
Encyclopedia ships an update every 62 months, Solar System AR 4D every 46 months. The most recent releases landed on September 3, 2026 and September 18, 2026 respectively.
| Parameter | Encyclopedia | Solar System AR 4D |
|---|---|---|
| Price | Free | Free |
| Rating | 3.8 (14 ratings) — better | — |
| Positive reviews | 83.3% of reviews | — |
| Number of ratings | 14 — better | — |
| Update frequency | Every 62 months | Every 46 months — better |
| Ads | No | No |
| In-app purchases | Yes | Yes |
| Monetization | Free with in-app purchases | — |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 15.0 | 12.0 — better |
| Further details — not scored | ||
| Size | 322 MB | 122 MB |
| Age rating | 4+ | 4+ |
| Developer | Good Spider, LLC | Ibrahim Amer |
In-app purchases
Encyclopedia
- Full Version$2.99
Solar System AR 4D
- Unlock3 variants$5.99
Questions
Is Encyclopedia free?
Is Solar System AR 4D free?
Do Encyclopedia or Solar System AR 4D have ads?
Which is updated more often, Encyclopedia or Solar System AR 4D?
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