Comparison

Encyclopedia vs Solar System AR 4D

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

Head to head
About

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.

Highlights
  • 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
Features
Read full description

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/

About

Solar System AR 4D

Features
Read full description

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.

Screenshots

Encyclopedia4 screens
Solar System AR 4D4 screens

Verdict

The call

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

CostPrice · In-app purchases · Ads · Monetization

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.

UpkeepUpdate frequency

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.

Scorecard1 real difference · 9 level
Encyclopedia versus Solar System AR 4D: the parameters behind the verdict, then further details
ParameterEncyclopediaSolar System AR 4D
PriceFreeFree
Rating3.8 (14 ratings) — better—
Positive reviews83.3% of reviews—
Number of ratings14 — better—
Update frequencyEvery 62 monthsEvery 46 months — better
AdsNoNo
In-app purchasesYesYes
MonetizationFree with in-app purchases—
DevicesiPhone, iPad, iPodiPhone, iPad, iPod
Requires iOS15.012.0 — better
Further details — not scored
Size322 MB122 MB
Age rating4+4+
DeveloperGood Spider, LLCIbrahim Amer

In-app purchases

1 purchases

Encyclopedia

One-time1
  • Full Version$2.99
1 purchases

Solar System AR 4D

One-time1
  • Unlock3 variants$5.99

Questions

Is Encyclopedia free?
Encyclopedia is free to download, with in-app purchases available.
Is Solar System AR 4D free?
Solar System AR 4D is free to download, with in-app purchases available.
Do Encyclopedia or Solar System AR 4D have ads?
Neither Encyclopedia nor Solar System AR 4D shows ads.
Which is updated more often, Encyclopedia or Solar System AR 4D?
Encyclopedia ships an update every 62 months, and Solar System AR 4D every 46 months. Most recently, Encyclopedia was updated on September 3, 2026 and Solar System AR 4D on September 18, 2026.

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