PP+ Newton's 2nd Law vs Kepler's Laws
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
PP+ Newton's 2nd Law
This app simulates a physics lab to explore Newton's Second Law, allowing students to collect and analyze realistic experimental data. It includes introductory videos, background theory, and reporting tools for a comprehensive learning experience.
- 3D physics simulation
- Realistic data with errors
- Introductory videos
- Background theory
- Experimental procedure
- Analysis and reporting tools
- Pre-lab and post-lab quizzes
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The Newton’s Second Law lab uses a laboratory cart to investigate the relationships between the force applied to an object and the mass and acceleration of the object. It is part of Polyhedron Physics Plus, a set of 24 iPad apps for use in the classroom. For those who’d prefer to develop their own experiments, the PP Cart and Pulley app features a similar apparatus without lab procedures and other supporting materials. In addition to a 3D simulation that produces realistic data, each lab includes introductory videos, background theory, experimental procedure, analysis and reporting tools, pre-lab quiz, post-lab questions, and teacher support materials. The experimental data produced by the simulations are realistic, including random and systematic errors. These features allow students to use standard data analysis and error analysis techniques to report on their own unique data, just as if the experiment had been performed using hands-on equipment. These labs can serve as replacements for hands-on labs, especially when equipment is not available, or as supplements to hands-on labs. They are also a suitable option for students in distance learning and home school situations. Formative and summative evaluations showed no significant difference in learning between students using the virtual labs and those using hands-on labs. Preliminary results suggest increased learning by students using the virtual labs as supplements to hands-on. Polyhedron Physics was developed by Polyhedron Learning Media, Inc. with partial funding provided under contract numbers ED-07-CO-0040 and ED-IES-11-C-0029 from the Institute of Education Sciences in the U.S. Department of Education through the Small Business Innovation Research (SBIR) program.
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.
Verdict
The clearest difference is rating: PP+ Newton's 2nd Law at 2.5 against Kepler's Laws's 1.0. PP+ Newton's 2nd Law also leads on update cadence (every 3 months vs every 7 months). Kepler's Laws's advantage is iOS requirement (12.0 vs 18.0). On price, ratings volume, 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. Neither carries in-app purchases, so what you see is what you pay.
PP+ Newton's 2nd Law holds the better App Store score, 2.5 against 1.0. Both are backed by a comparable volume of ratings — 2 and 1 respectively.
PP+ Newton's 2nd Law ships an update every 3 months, Kepler's Laws every 7 months. The most recent releases landed on June 8, 2026 and July 4, 2026 respectively.
| Parameter | PP+ Newton's 2nd Law | Kepler's Laws |
|---|---|---|
| Price | Free | Free |
| Rating | 2.5 (2 ratings) — better | 1.0 (1 ratings) |
| Positive reviews | 100.0% of reviews | — |
| Number of ratings | 2 — better | 1 |
| Update frequency | Every 3 months — better | Every 7 months |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free | Free |
| Devices | iPad | iPad |
| Requires iOS | 18.0 | 12.0 — better |
| Further details — not scored | ||
| Size | 116 MB | 16 MB |
| Age rating | 4+ | 4+ |
| Developer | Polyhedron Learning Media, Inc. | Vladimir Vascak |
Customer experience
PP+ Newton's 2nd Law
Kepler's Laws
In-app purchases
PP+ Newton's 2nd Law
No in-app purchases
Kepler's Laws
No in-app purchases
Questions
Is PP+ Newton's 2nd Law free?
Is Kepler's Laws free?
Which has better reviews, PP+ Newton's 2nd Law or Kepler's Laws?
Do PP+ Newton's 2nd Law or Kepler's Laws have ads?
Which is updated more often, PP+ Newton's 2nd Law or Kepler's Laws?
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