# Shor's algorithm vs NSOperation

The clearest difference is in-app purchases: NSOperation at none against Shor's algorithm's 3. Shor's algorithm's advantage is iOS requirement (16.0 vs 18.2). On price, ads and device support there is nothing between them.

Both are free to download. Shor's algorithm sells 3 one-off in-app purchases. NSOperation asks for nothing beyond the download.

## The numbers

| Metric | Shor's algorithm | NSOperation |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Every 6 months | — |
| Size | 7 MB | 2 MB |
| Requires iOS | **16.0** | 18.2 |
| Devices | **iPhone, iPad** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [Sungjun Kim](https://appshunter.io/developer/1602461985) | [Daniel Romero](https://appshunter.io/developer/893059976) |

## What reviewers say

### Shor's algorithm

[App page](https://appshunter.io/ios/app/shors-algorithm/id6472044082)

**Features:** macOS Compatibility

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| coffee | $0.99 | one-time |
| latte | $4.99 | one-time |
| whopper set | $9.99 | one-time |


### NSOperation

[App page](https://appshunter.io/ios/app/nsoperation/id6746875864)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Shor's algorithm free?

Shor's algorithm is free to download, with in-app purchases available.

### Is NSOperation free?

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

### Do Shor's algorithm or NSOperation have ads?

Neither Shor's algorithm nor NSOperation shows ads.

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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.*