Mechanical Pendulums vs Classis GBA
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Mechanical Pendulums
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In mechanics, in the area of dynamical system, a N-tuple pendulum is a set of N simple pendulums attached to each other. These N-tuple pendulums are physical systems that exibits rich dynamical behavior. For certain energies, are the motion of these mechanical pendulums often chaotic. You can influence the motion of the pendulums by holding your device in different positions. The equations of motions of these pendulums has been derived using the Sophia mechanical package. The different set of differential equations are solved using the 4:th order Runge-Kutta method for the time stepping. Within this application you can switch between these mechanical pendulums: - Double - Triple - Quadruple - Quintuple - Sextuple - Octuple - Symmtric Double - Simple 3-Dimensional The visualization of the pendulums can be viewed in either a Quartz view or in an OpenGL view.
Classis GBA
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Classis GBA (GradeBook App) is the ultimate classroom companion for teachers, making attendance tracking, grading, and student participation effortless. Designed for simplicity and efficiency, Classis GBA helps educators stay organized and focused on what truly matters—teaching. With an intuitive interface and powerful tools, managing your classroom has never been easier!
Screenshots
Verdict
The clearest difference is device support: Classis GBA at 2 against Mechanical Pendulums's —. Mechanical Pendulums's advantage is iOS requirement (15.0 vs 18.0). On price 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.
| Parameter | Mechanical Pendulums | Classis GBA |
|---|---|---|
| Price | Free | Free |
| Update frequency | — | Every 11 months |
| Ads | — | No |
| In-app purchases | No | No |
| Devices | — | iPhone, iPad — better |
| Requires iOS | 15.0 — better | 18.0 |
| Further details — not scored | ||
| Size | 0 MB | 19 MB |
| Age rating | 4+ | 12+ |
| Developer | Torbjorn Sjogren | MicroCodes.me |
In-app purchases
Mechanical Pendulums
No in-app purchases
Classis GBA
No in-app purchases





