Comparison

Electronify vs Pendulum Lab

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

Head to head
About

Electronify

Explore the fundamental concepts of quantum mechanics, including atomic orbitals and electron behavior. Visualize molecular shapes using VSEPR theory to understand chemical properties.

Highlights
  • Atomic orbital visualization
  • Electron probability mapping
  • Spherical harmonics representation
  • VSEPR theory model
  • Molecular geometry prediction
  • Chemical property insights
Features
Read full description

Quantum mechanics is a fascinating field that helps us understand the behavior of matter and energy on a microscopic level. One of the most important concepts in quantum mechanics is the idea of atomic orbitals. An atomic orbital is a mathematical function that describes the probability of finding an electron in a particular location around an atom's nucleus. Each electron in an atom can be described by a unique set of four quantum numbers, which determine its energy level, angular momentum, magnetic moment, and spin. The shape of each atomic orbital can be accurately depicted using a formula called spherical harmonics, which creates a visual representation of the electron's probable location around the nucleus. These representations are often shown as a series of dots, each representing a probable location of where an electron might be. The VSEPR (Valence Shell Electron Pair Repulsion) theory, on the other hand, is a model used to predict the geometry of molecules based on the arrangement of electrons in their valence shells. According to this theory, the electrons in a molecule's valence shell repel each other, and their repulsion determines the molecule's shape. The VSEPR model predicts a range of molecular shapes, including linear, trigonal planar, tetrahedral, trigonal bipyramidal, and octahedral. These shapes can be used to predict a molecule's physical and chemical properties, such as polarity and reactivity. This app will provide you these fascinating insights about the nature of how atoms and molecules behave in the real world. Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/

About

Pendulum Lab

Features
Read full description

PendulumLab: Interactive Pendulum Physics Simulator Dive into the fascinating world of pendulum physics with PendulumLab! Whether you're a student, educator, or science enthusiast, this app brings the beauty and complexity of pendulum motion right to your fingertips. Key Features: Explore single, double, and triple pendulum systems Interact with real-time, visually stunning simulations Adjust parameters like length, angle, and gravity to see instant effects Visualize pendulum trajectories with customizable trails Toggle trajectory visibility for each pendulum bob Clear trajectories with a single tap for new experiments Perfect for: Students learning about harmonic motion and chaos theory Teachers demonstrating complex physics concepts Science enthusiasts curious about pendulum behavior Anyone fascinated by the interplay of physics and visual art Why PendulumLab? Intuitive controls make learning physics fun and accessible High-quality graphics provide a clear view of pendulum dynamics Real-time parameter adjustments allow for instant experimentation Trajectory visualization helps understand the complexity of multi-pendulum systems Unlock the secrets of pendulum motion, from simple harmonic oscillations to chaotic behavior. PendulumLab turns your device into a powerful physics laboratory, letting you explore, learn, and marvel at the wonders of motion. Download PendulumLab now and start your journey into the mesmerizing world of pendulum physics!

Screenshots

Electronify4 screens
Pendulum Lab3 screens

Verdict

The call

The clearest difference is price: Electronify at Free against Pendulum Lab's $0.99. Electronify also leads on update cadence (every 10 days vs every 5 weeks). 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

CostPrice · In-app purchases · Ads · Monetization

Electronify is free to download; Pendulum Lab costs $0.99 up front. Electronify sells 2 in-app purchases, starting at $4.99 per month and Pendulum Lab sells 1 one-off in-app purchase. Whichever you choose, the download price is not the number that matters.

UpkeepUpdate frequency

Electronify ships an update every 10 days, Pendulum Lab every 5 weeks. The most recent releases landed on November 3, 2026 and November 4, 2026 respectively.

Scorecard2 real differences · 7 level
Electronify versus Pendulum Lab: the parameters behind the verdict, then further details
ParameterElectronifyPendulum Lab
PriceFree — better$0.99
Rating5.0 (1 ratings) — better—
Number of ratings1 — better—
Update frequencyEvery 10 days — betterEvery 5 weeks
AdsNoNo
In-app purchasesYesYes
MonetizationFree with in-app purchases—
DevicesiPhone, iPad, iPodiPhone, iPad, iPod
Requires iOS15.115.0 — better
Further details — not scored
Size43 MB4 MB
Age rating4+4+
DeveloperWonmo Seonghyeonsu jeong

In-app purchases

2 purchases

Electronify

Subscriptions2
  • Californium Pass$4.991 Month
  • Einsteinium Pass$12.991 Month
1 purchases

Pendulum Lab

One-time1
  • Triple Pendulum Unlock$0.99

Questions

Is Electronify free?
Electronify is free to download, with in-app purchases available.
Is Pendulum Lab free?
Pendulum Lab costs $0.99, and also offers in-app purchases.
Do Electronify or Pendulum Lab have ads?
Neither Electronify nor Pendulum Lab shows ads.
Which is updated more often, Electronify or Pendulum Lab?
Electronify ships an update every 10 days, and Pendulum Lab every 5 weeks. Most recently, Electronify was updated on November 3, 2026 and Pendulum Lab on November 4, 2026.

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