Comparison

Double Pendulum Simulation vs Pic2Mag

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

Head to head
About

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.

Highlights
  • Double pendulum simulation
  • Runge-Kutta method solver
  • Chaotic dynamics exploration
  • Device tilt interaction
  • Educational physics tool
Features
Read full description

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.

About

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.

Highlights
  • 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
Features
Read full description

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

Double Pendulum Simulation3 screens
Pic2Mag4 screens

Verdict

The call

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

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

ReceptionRating · Positive reviews · Number of ratings

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.

UpkeepUpdate frequency

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.

Scorecard2 real differences · 8 level
Double Pendulum Simulation versus Pic2Mag: the parameters behind the verdict, then further details
ParameterDouble Pendulum SimulationPic2Mag
PriceFreeFree
Rating4.0 (2 ratings)5.0 (1 ratings) — better
Positive reviews37.5% of reviews—
Number of ratings2 — better1
Update frequencyEvery 73 monthsEvery 31 months — better
AdsNoNo
In-app purchasesNoNo
MonetizationFreeFree
DevicesiPhone, iPodiPhone, iPad, iPod — better
Requires iOS7.0 — better8.0
Further details — not scored
Size0 MB108 MB
Age rating4+4+
DeveloperManneTroll SolutionsMichael Snyder

Customer experience

Double Pendulum Simulation

All ratings2 ratings
Positive50.0%
Neutral50.0%
Negative0.0%
Written reviews8 reviews
Positive37.5%
Neutral25.0%
Negative37.5%

Pic2Mag

All ratings1 ratings
Positive100.0%
Neutral0.0%
Negative0.0%

In-app purchases

None

Double Pendulum Simulation

No in-app purchases

None

Pic2Mag

No in-app purchases

Questions

Is Double Pendulum Simulation free?
Double Pendulum Simulation is free to download, with no in-app purchases.
Is Pic2Mag free?
Pic2Mag is free to download, with no in-app purchases.
Which has better reviews, Double Pendulum Simulation or Pic2Mag?
Pic2Mag is rated higher. Double Pendulum Simulation averages 4.0 out of 5 from 2 ratings, while Pic2Mag averages 5.0 from 1 ratings.
Do Double Pendulum Simulation or Pic2Mag have ads?
Neither Double Pendulum Simulation nor Pic2Mag shows ads.
Which is updated more often, Double Pendulum Simulation or Pic2Mag?
Double Pendulum Simulation ships an update every 73 months, and Pic2Mag every 31 months. Most recently, Double Pendulum Simulation was updated on September 24, 2026 and Pic2Mag on October 8, 2026.

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