# Quantum Mechanics + vs Epicycles

The clearest difference is in-app purchases: Epicycles at none against Quantum Mechanics +'s 1. Epicycles also leads on rating (5.0 vs 4.8). Quantum Mechanics +'s advantage is update cadence (daily vs every 5 days) and iOS requirement (13.0 vs 15.0). On price, ratings volume, ads and monetization model there is nothing between them.

Both are free to download. Quantum Mechanics + sells 1 one-off in-app purchase. Epicycles asks for nothing beyond the download.

Epicycles holds the better App Store score, 5.0 against 4.8. Both are backed by a comparable volume of ratings — 4 and 2 respectively.

Quantum Mechanics + ships an update daily, Epicycles every 5 days. The most recent releases landed on October 18, 2026 and September 21, 2026 respectively.

## The numbers

| Metric | Quantum Mechanics + | Epicycles |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.8 (4 ratings)](https://appshunter.io/ios/app/quantum-mechanics-plus/id1563289836/reviews) | **[5.0 (2 ratings)](https://appshunter.io/ios/app/epicycles/id6450433959/reviews)** |
| Number of ratings | **4** | 2 |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | **Daily** | Every 5 days |
| Monetization | Free | Free |
| Size | 1 MB | 4 MB |
| Requires iOS | **13.0** | 15.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Peter Kramer](https://appshunter.io/developer/348619994) | [Limit Point Software](https://appshunter.io/developer/377981570) |

## What reviewers say

### Quantum Mechanics +

[App page](https://appshunter.io/ios/app/quantum-mechanics-plus/id1563289836)

Explore quantum physics by numerically solving the Schrodinger Wave Equation. Visualize bound states and wave packets with various potentials, ideal for educational demonstrations. Accurately calculate energy values and observe quantum phenomena like tunneling.

**Highlights:** Solve Schrodinger's Wave Equation, Visualize bound states and wave packets, Simulate various potentials (Harmonic Oscillator, Square Well, etc.), Observe quantum phenomena (Ramsauer-Townsend effect, tunneling), Accurate energy value calculation, Educational tool for introductory courses

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Contribution | $0.99 | one-time |


### Epicycles

[App page](https://appshunter.io/ios/app/epicycles/id6450433959)

Explore the visualization of complex Fourier series through interactive epicycles. Create and analyze approximations of parametric curves and complex functions. Save animations and export custom terms for later use.

**Highlights:** Visualize Fourier series of 2D functions, Create epicycles from drawn curves, Save custom terms to documents, Export animations as GIFs, Adjust time and number of terms, Interactive graphic elements

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Quantum Mechanics + free?

Quantum Mechanics + is free to download, with in-app purchases available.

### Is Epicycles free?

Epicycles is free to download, with no in-app purchases.

### Which has better reviews, Quantum Mechanics + or Epicycles?

Epicycles is rated higher. Quantum Mechanics + averages 4.8 out of 5 from 4 ratings, while Epicycles averages 5.0 from 2 ratings.

### Do Quantum Mechanics + or Epicycles have ads?

Neither Quantum Mechanics + nor Epicycles shows ads.

### Which is updated more often, Quantum Mechanics + or Epicycles?

Quantum Mechanics + ships an update daily, and Epicycles every 5 days. Most recently, Quantum Mechanics + was updated on October 18, 2026 and Epicycles on September 21, 2026.

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*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*