Kepler's Laws vs Interactive Solar System
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Kepler's Laws
Explore animated visualizations and interactive tasks designed to help you grasp Kepler's laws of planetary motion. This educational tool offers a clear way to understand complex astronomical concepts through visual aids and practical exercises.
- Animated visualizations
- Interactive tasks
- Understanding planetary motion
- Educational tool
- Astronomy concepts
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Animations and tasks that facilitate the understanding of Kepler's laws.
Interactive Solar System
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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.
Verdict
The clearest difference is price: Kepler's Laws at Free against Interactive Solar System's $1.99. Interactive Solar System's advantage is update cadence (fortnightly vs every 7 months). On ads, in-app purchases, device support and iOS requirement 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
Kepler's Laws 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.
Kepler's Laws ships an update every 7 months, Interactive Solar System fortnightly. The most recent releases landed on July 4, 2026 and September 18, 2026 respectively.
| Parameter | Kepler's Laws | Interactive Solar System |
|---|---|---|
| Price | Free — better | $1.99 |
| Rating | 1.0 (1 ratings) — better | — |
| Number of ratings | 1 — better | — |
| Update frequency | Every 7 months | Fortnightly — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free | — |
| Devices | iPad | iPad, Apple TV — better |
| Requires iOS | 12.0 | 12.0 |
| Further details — not scored | ||
| Size | 16 MB | 52 MB |
| Age rating | 4+ | 4+ |
| Developer | Vladimir Vascak | Ventura Educational Systems |
In-app purchases
Kepler's Laws
No in-app purchases
Interactive Solar System
No in-app purchases
Questions
Is Kepler's Laws free?
Is Interactive Solar System free?
Do Kepler's Laws or Interactive Solar System have ads?
Which is updated more often, Kepler's Laws or Interactive Solar System?
Other comparisons
