Double Pendulum Simulation vs Pic2Mag
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Double Pendulum Simulation
Explore the chaotic and dynamic behavior of a double pendulum. This app uses the Runge-Kutta method to solve differential equations, allowing you to influence the pendulum's motion by tilting your device.
- Double pendulum simulation
- Runge-Kutta method solver
- Chaotic dynamics exploration
- Device tilt interaction
- Educational physics tool
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In mathematics, in the area of dynamical systems, a double pendulum is a pendulum with another pendulum attached to its end, and is a simple physical system that exhibits rich dynamic behavior. The motion of a double pendulum is governed by a set of coupled ordinary differential equations. For certain energies its motion is chaotic. This application solves these differential equations using the Runge-Kutta method for the time stepping. You can influence the movement of the pendulum by holding your device in different positions.
Pic2Mag
Visualize magnetic and electric fields by drawing magnets or charges. This educational tool helps students understand physics concepts by displaying field lines and voltage potentials. It offers a free, ad-free learning experience for iOS devices.
- Draw magnets to visualize magnetic fields
- Draw charges to visualize electric fields
- Magnetostatic and Electrostatic modes
- Field line and voltage potential plotting
- Caches results for faster processing
- Ad-free learning experience
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The user draws the magnets and the Pic2Mag program draws the magnetic fields. The Field Calculator program now has a Magnetostatic mode, and an Electrostatic mode to plot either magnetic fields or electric fields. The program designed to help students learn Magnetic fields and Electric fields. You can draw magnets and look at the magnetic field, or you can draw electric charges and look at the electric voltage field. The best free magnetic science program you can download! No advertisements, it's just all app. The app can process most images in just a few minutes. The app caches it's results so the more that you use it, the faster the program processes images. Red pixels represent magnets with a North pole surface facing the observer, and Blue pixels represent magnets with a South pole surface facing the observer. Pink pixels represent positive electric charges, and Dark Purple pixels represent negative electric charges
Screenshots
Verdict
The clearest difference is rating: Pic2Mag at 5.0 against Double Pendulum Simulation's 4.0. Pic2Mag also leads on update cadence (every 31 months vs every 73 months). 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.
Pic2Mag holds the better App Store score, 5.0 against 4.0. Both are backed by a comparable volume of ratings — 2 and 1 respectively.
Double Pendulum Simulation ships an update every 73 months, Pic2Mag every 31 months. The most recent releases landed on September 24, 2026 and October 8, 2026 respectively.
| Parameter | Double Pendulum Simulation | Pic2Mag |
|---|---|---|
| Price | Free | Free |
| Rating | 4.0 (2 ratings) | 5.0 (1 ratings) — better |
| Positive reviews | 37.5% of reviews | — |
| Number of ratings | 2 — better | 1 |
| Update frequency | Every 73 months | Every 31 months — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free | Free |
| Devices | iPhone, iPod | iPhone, iPad, iPod — better |
| Requires iOS | 7.0 — better | 8.0 |
| Further details — not scored | ||
| Size | 0 MB | 108 MB |
| Age rating | 4+ | 4+ |
| Developer | ManneTroll Solutions | Michael Snyder |
Customer experience
Double Pendulum Simulation
Pic2Mag
In-app purchases
Double Pendulum Simulation
No in-app purchases
Pic2Mag
No in-app purchases
Questions
Is Double Pendulum Simulation free?
Is Pic2Mag free?
Which has better reviews, Double Pendulum Simulation or Pic2Mag?
Do Double Pendulum Simulation or Pic2Mag have ads?
Which is updated more often, Double Pendulum Simulation or Pic2Mag?
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