# Computer Science Calculations vs SOUTRA

The clearest difference is in-app purchases: SOUTRA at none against Computer Science Calculations's 3. SOUTRA also leads on ads (none vs shown) and iOS requirement (13.1 vs 15.0). Computer Science Calculations's advantage is update cadence (monthly vs every 2 months). On price 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. SOUTRA asks for nothing beyond the download.

Computer Science Calculations ships an update monthly, SOUTRA every 2 months. The most recent releases landed on October 20, 2026 and October 6, 2026 respectively.

## The numbers

| Metric | Computer Science Calculations | SOUTRA |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | **No** |
| Ads | Yes | **No** |
| Update frequency | **Monthly** | Every 2 months |
| Size | 26 MB | 61 MB |
| Requires iOS | 15.0 | **13.1** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 17+ |
| Developer | [Egal Net di Ettore Gallina](https://appshunter.io/developer/993232047) | [Madi SAKO](https://appshunter.io/developer/1655566369) |

## 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 |


### SOUTRA

[App page](https://appshunter.io/ios/app/soutra/id6444663701)

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

**In-app purchases:** none


## Frequently asked questions

### Is Computer Science Calculations free?

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

### Is SOUTRA free?

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

### Do Computer Science Calculations or SOUTRA have ads?

Computer Science Calculations shows ads; SOUTRA does not.

### Which is updated more often, Computer Science Calculations or SOUTRA?

Computer Science Calculations ships an update monthly, and SOUTRA every 2 months. Most recently, Computer Science Calculations was updated on October 20, 2026 and SOUTRA on October 6, 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.*