# Quantum Mechanics + vs Little Quantum App

The clearest difference is in-app purchases: Little Quantum App at none against Quantum Mechanics +'s 1. Quantum Mechanics +'s advantage is update cadence (daily vs every 2 weeks) and iOS requirement (13.0 vs 15.0). On price, ads and device support there is nothing between them.

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

Quantum Mechanics + ships an update daily, Little Quantum App every 2 weeks. Both last shipped on October 24, 2026.

## The numbers

| Metric | Quantum Mechanics + | Little Quantum App |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.8 (4 ratings)](https://appshunter.io/ios/app/quantum-mechanics-plus/id1563289836/reviews)** | — |
| Number of ratings | **4** | — |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | **Daily** | Every 2 weeks |
| Monetization | Free | — |
| Size | 1 MB | 169 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) | [Ludwig-Maximilians-Universitaet Muenchen](https://appshunter.io/developer/1634377997) |

## 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 |


### Little Quantum App

[App page](https://appshunter.io/ios/app/little-quantum-app/id6752292817)

**In-app purchases:** none


## Frequently asked questions

### Is Quantum Mechanics + free?

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

### Is Little Quantum App free?

Little Quantum App is free to download, with no in-app purchases.

### Do Quantum Mechanics + or Little Quantum App have ads?

Neither Quantum Mechanics + nor Little Quantum App shows ads.

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

Quantum Mechanics + ships an update daily, and Little Quantum App every 2 weeks. Most recently, Quantum Mechanics + was updated on October 24, 2026 and Little Quantum App on October 24, 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.*