Comparison

Interactive Solar System vs By

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
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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

By

Features
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The Physics of Stars β€” in your hand. By-Pass is an interactive physics laboratory that brings the fascinating complexity of Newtonian mechanics to your iPad and iPhone. Here, you become the architect of orbital systems and watch simple forces give rise to highly complex mathematical patterns. Unlike simple animations, By-Pass uses its own physics engine with a simulation rate of 60 Hz to calculate real gravitational interactions accurately and without compromise. The physical core: Master of Orbits: Create satellites and planets with intuitive gestures. Use drag gestures to define the initial launch velocity and watch as objects settle into stable orbits or drift away into the vastness of outer space. Dynamic Gravitational Centers: Choose between 1, 2, or 3 suns. Experiment with the unstable and fascinating solutions of the famous three‑body problem. Each additional center dramatically alters the gravitational field and sends your planets onto unpredictable, dancing trajectories. Variable Gravitational Exponents: Switch between a fully realistic simulation (exponent 2.0) and modified fields for extremely long‑lasting, geometric path traces. Precision & Performance: Experience the simulation with a render target of 120 FPS. The physics runs independently at 60 Hz, ensuring smooth visuals even in the most complex systems. Procedural Matter: Each planet (Rocky, Lava, Gas, Ocean, Icy) is generated at runtime and behaves as a discrete physical entity within the simulation.

Screenshots

By4 screens

Verdict

The call

The clearest difference is price: By at Free against Interactive Solar System's $1.99. By also leads on update cadence (daily vs fortnightly). Interactive Solar System's advantage is iOS requirement (12.0 vs 26.0). 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

By 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, By daily. The most recent releases landed on October 5, 2026 and September 26, 2026 respectively.

Scorecard3 real differences Β· 3 level
Interactive Solar System versus By: the parameters behind the verdict, then further details
ParameterInteractive Solar SystemBy
Price$1.99Free β€” better
Update frequencyFortnightlyDaily β€” better
AdsNoNo
In-app purchasesNoNo
DevicesiPad, Apple TViPhone, iPad
Requires iOS12.0 β€” better26.0
Further details β€” not scored
Size52 MB8 MB
Age rating4+4+
DeveloperVentura Educational SystemsAppno UG (haftungsbeschrankt)

In-app purchases

None

Interactive Solar System

No in-app purchases

None

By

No in-app purchases

Questions

Is Interactive Solar System free?
Interactive Solar System costs $1.99, with no in-app purchases.
Is By free?
By is free to download, with no in-app purchases.
Do Interactive Solar System or By have ads?
Neither Interactive Solar System nor By shows ads.
Which is updated more often, Interactive Solar System or By?
Interactive Solar System ships an update fortnightly, and By daily. Most recently, Interactive Solar System was updated on October 5, 2026 and By on September 26, 2026.

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