Comparison

Interactive Solar System vs Spin

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

Head to head
About

Interactive Solar System

Features
Read full description

Take a thrilling tour of the Solar System with the Interactive Solar System Explorer. Select the planet that you wish to explore and then hit the power button to zoom off to your destination. When you arrive a myriad of interesting facts await you. Tap a button access interesting data about each of the planets, the asteroids and the Earth's moon. Facts include distance from the sun, diameter, mass, and orbital and rotational periods -- all presented in an interactive format. Tap the info button to read interesting facts about each important object in the solar system. Teachers will really like this app. After students have read about the planets, they can tap the quiz button to measure their reading comprehension. In addition to the quiz there is also a word game that helps students review the information presented. Charts and graphs are used to present comparison information about the planets. Interactive Solar System Explorer is available for iOS and tvOS devices. It is just beautiful on a big screen TV and would be a wonderfully exciting tool in any science classroom.

About

Spin

Features
Read full description

Spin the wheel to select from four sets of themed activities (Moving like Food, Moving like Animals, Playing at the Park, or Going on a Picnic). Each wheel includes various physical movements that the player randomly selects by pulling the lever. Wiggle like spaghetti, jump like a frog, swing a baseball bat… how will the app ask YOU to move?

Screenshots

Spin4 screens

Verdict

The call

The clearest difference is price: Spin at Free against Interactive Solar System's $1.99. Interactive Solar System's advantage is update cadence (fortnightly vs every 8 months) and iOS requirement (12.0 vs 15.0). On ads, in-app purchases and device support there is nothing between them.

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

CostPrice Β· In-app purchases Β· Ads Β· Monetization

Spin is free to download; Interactive Solar System costs $1.99 up front. Neither carries in-app purchases, so what you see is what you pay.

UpkeepUpdate frequency

Interactive Solar System ships an update fortnightly, Spin every 8 months. The most recent releases landed on October 5, 2026 and October 9, 2026 respectively.

Scorecard3 real differences Β· 3 level
Interactive Solar System versus Spin: the parameters behind the verdict, then further details
ParameterInteractive Solar SystemSpin
Price$1.99Free β€” better
Update frequencyFortnightly β€” betterEvery 8 months
AdsNoNo
In-app purchasesNoNo
DevicesiPad, Apple TViPhone, iPad, iPod β€” better
Requires iOS12.0 β€” better15.0
Further details β€” not scored
Size52 MB486 MB
Age rating4+4+
DeveloperVentura Educational SystemsNew Mexico State University Board of Regents

In-app purchases

None

Interactive Solar System

No in-app purchases

None

Spin

No in-app purchases

Questions

Is Interactive Solar System free?
Interactive Solar System costs $1.99, with no in-app purchases.
Is Spin free?
Spin is free to download, with no in-app purchases.
Do Interactive Solar System or Spin have ads?
Neither Interactive Solar System nor Spin shows ads.
Which is updated more often, Interactive Solar System or Spin?
Interactive Solar System ships an update fortnightly, and Spin every 8 months. Most recently, Interactive Solar System was updated on October 5, 2026 and Spin on October 9, 2026.

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