# Computer Science Calculations vs Scan Again

The clearest difference is ads: Scan Again at none against Computer Science Calculations's shown. Computer Science Calculations's advantage is iOS requirement (15.0 vs 26.0). On price, in-app purchases and device support there is nothing between them.

Both are free to download. Computer Science Calculations sells 3 in-app purchases, starting at $0.99 per 3 months and Scan Again sells 1 in-app purchase, starting at $2.99 per 3 months. Whichever you choose, the download price is not the number that matters.

## The numbers

| Metric | Computer Science Calculations | Scan Again |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | Yes |
| Ads | Yes | **No** |
| Update frequency | Monthly | — |
| Size | 26 MB | 13 MB |
| Requires iOS | **15.0** | 26.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Egal Net di Ettore Gallina](https://appshunter.io/developer/993232047) | [CatLife Software Inc](https://appshunter.io/developer/1198071842) |

## What reviewers say

### Computer Science Calculations

[App page](https://appshunter.io/ios/app/computer-science-calculations/id1488787780)

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

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| PRO Version (3 months) | $0.99 | per 3 months |
| PRO Version (1 year) | $2.49 | per year |
| PRO Version (Lifetime) | $89.99 | one-time |


### Scan Again

[App page](https://appshunter.io/ios/app/scan-again/id6754995732)

**Features:** macOS Compatibility, Family Sharing

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Scan Again Quarterly Access | $2.99 | per 3 months |


## Frequently asked questions

### Is Computer Science Calculations free?

Computer Science Calculations is free to download, with in-app purchases available.

### Is Scan Again free?

Scan Again is free to download, with in-app purchases available.

### Do Computer Science Calculations or Scan Again have ads?

Computer Science Calculations shows ads; Scan Again does not.

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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.*