# Quantum Programming Compiler vs Occam SI

The clearest difference is in-app purchases: Occam SI at none against Quantum Programming Compiler's 4. Occam SI also leads on ads (none vs shown). Quantum Programming Compiler's advantage is iOS requirement (12.0 vs 26.0). On price, update cadence and device support there is nothing between them.

Both are free to download. Quantum Programming Compiler sells 4 in-app purchases, starting at $2.99 per month. Occam SI asks for nothing beyond the download.

Quantum Programming Compiler ships an update monthly, Occam SI every 2 months. The most recent releases landed on September 23, 2026 and October 12, 2026 respectively.

## The numbers

| Metric | Quantum Programming Compiler | Occam SI |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[3.4 (8 ratings)](https://appshunter.io/ios/app/quantum-programming-compiler/id1337663853/reviews)** | — |
| Number of ratings | **8** | — |
| Positive reviews | 66.7% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | Yes | **No** |
| Update frequency | **Monthly** | Every 2 months |
| Monetization | Free with in-app purchases | — |
| Size | 25 MB | 47 MB |
| Requires iOS | **12.0** | 26.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, Mac |
| Age rating | 4+ | 17+ |
| Developer | [Ketan Appa](https://appshunter.io/developer/576435759) | [Dakota Bullard](https://appshunter.io/developer/1865709291) |

## What reviewers say

### Quantum Programming Compiler

[App page](https://appshunter.io/ios/app/quantum-programming-compiler/id1337663853)

Learn and execute quantum computing code directly on your mobile device. This app offers tutorials for beginners and professionals, a code editor with syntax highlighting, and the ability to compile and run quantum programs using Python 3.7.

**Highlights:** Compile and run quantum programs, Syntax highlighting editor, Custom keyboard for quantum characters, Plotting and graphing support, Easy and advanced tutorials, Open, save, import, and share files

**Features:** Vision Pro support

**In-app purchases (4)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 1 Month Subscription | $2.99 | per month |
| 6 Months | $11.99 | per 6 months |
| 1 Year | $17.99 | per year |
| Upgrade | $6.99 | one-time |


### Occam SI

[App page](https://appshunter.io/ios/app/occam-si/id6759069376)

**Features:** Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is Quantum Programming Compiler free?

Quantum Programming Compiler is free to download, with in-app purchases available.

### Is Occam SI free?

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

### Do Quantum Programming Compiler or Occam SI have ads?

Quantum Programming Compiler shows ads; Occam SI does not.

### Which is updated more often, Quantum Programming Compiler or Occam SI?

Quantum Programming Compiler ships an update monthly, and Occam SI every 2 months. Most recently, Quantum Programming Compiler was updated on September 23, 2026 and Occam SI on October 12, 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.*