# Quantum Mechanics + — Solving Schrodinger's Equation

> Numerical solver for Schrodinger's Wave Equation in quantum mechanics education. (iPhone/iPad app by Peter Kramer.)

- Source: https://appshunter.io/ios/app/quantum-mechanics-plus/id1563289836 (this page in markdown: same URL + `.md`)
- Developer: [Peter Kramer](https://appshunter.io/developer/348619994)
- Category: Education
- Price: Free with in-app purchases
- Rating: 4.80/5 from 4 App Store ratings · 1 written reviews indexed
- Age rating: 4+
- Requires: iOS 13.0 · 1 MB
- Languages: American English
- Released: 2022-05-09
- Data updated: 2026-08-21
- Monetization: free
- User reviews in markdown: https://appshunter.io/ios/app/quantum-mechanics-plus/id1563289836/reviews.md

## What is Quantum Mechanics +?

Numerically solve Schrodinger's Wave Equation with various potentials for bound states and wave packets.  Real Quantum Physics - suitable for a theory lab or demonstration in an introductory Quantum Mechanics course.  Find bound states for Harmonic Oscillator, Square Well, Ammonia Maser, Hydrogen Atom, and Delta Function Potentials.  Follow a wave packet as it hits a Step Barrier, Resonant Potential and Tunnel Barrier.  Enter energy values for a bound state and see if the solution converges - real energy values accurate to better than 1%.  Observe the Ramsauer-Townsend effect and a wave packet tunnel through a forbidden potential barrier.  

Screenshots:
1) Home page with options
2) Harmonic Oscillator with 5 energy levels
3) Bound state potentials
4) Wave packet bouncing off of a step function potential
5) Wave packet potentials
6) Split two levels of an ammonia maser
7) Wave packet incident on a barrier
8) Wave packet after tunneling through barrier - right side amplified by magnifier

## Key features

- 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

## Pricing and in-app purchases

Base price: Free.

**One-time purchases**

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


## Recent user reviews (1 of 1)

All indexed reviews: https://appshunter.io/ios/app/quantum-mechanics-plus/id1563289836/reviews.md

### 5/5 — Thank you

*2026-01-12*

🙏🏻

## Frequently asked questions about Quantum Mechanics +

### What is Quantum Mechanics + used for?

Quantum Mechanics + is used to numerically solve the Schrodinger Wave Equation, allowing users to visualize bound states and wave packets with various potentials. It's designed for educational purposes in introductory quantum mechanics courses.

### What potentials can Quantum Mechanics + simulate?

Quantum Mechanics + can simulate bound states for Harmonic Oscillator, Square Well, Ammonia Maser, Hydrogen Atom, and Delta Function Potentials. It also models wave packets hitting Step Barriers, Resonant Potentials, and Tunnel Barriers.

### How accurate are the energy value calculations in Quantum Mechanics +?

Quantum Mechanics + calculates real energy values for bound states with an accuracy of better than 1%. This precision makes it a reliable tool for demonstrations and learning.

### Can I observe specific quantum phenomena with Quantum Mechanics +?

Yes, you can observe phenomena like the Ramsauer-Townsend effect and a wave packet tunneling through a forbidden potential barrier. The app also allows for amplification of wave packets after tunneling.

### What devices is Quantum Mechanics + available on?

Quantum Mechanics + is available on iPhone, iPad, and iPod. It is designed for Apple mobile devices.

### How often is Quantum Mechanics + updated?

Quantum Mechanics + was last updated on May 10, 2022, to version 1.1.1. This indicates a recent update, suggesting ongoing support and potential for future improvements.

### Does Quantum Mechanics + have ads?

No, Quantum Mechanics + does not contain advertisements. It is a free application without any ad interruptions.

### What is the age rating for Quantum Mechanics +?

Quantum Mechanics + has an age rating of 4+. This suggests it is suitable for a wide audience, including younger learners, due to its educational and non-violent nature.

## Version history (last 2 releases)

### 1.1.1 — 2022-05-10

Added a way for users to 'thank' the app developer through a voluntary IAP.

### 1.1 — 2022-05-09

No release notes.

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All apps by Peter Kramer: https://appshunter.io/developer/348619994

## Related topics

[quantum mechanics](https://appshunter.io/ios/topics/quantum-mechanics) · [resonant quantum mechanics](https://appshunter.io/ios/topics/resonant-quantum-mechanics) · [interactive quantum mechanics](https://appshunter.io/ios/topics/interactive-quantum-mechanics) · [coadvantage quantum](https://appshunter.io/ios/topics/coadvantage-quantum)

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*Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-08-21.*