# BasicATTCalc vs Computer Science Calculations

The clearest difference is price: Computer Science Calculations at Free against BasicATTCalc's $1.99. Computer Science Calculations also leads on update cadence (monthly vs every 29 months). BasicATTCalc's advantage is in-app purchases (none vs 3) and ads (none vs shown). On device support and iOS requirement there is nothing between them.

Computer Science Calculations is free to download; BasicATTCalc costs $1.99 up front. Computer Science Calculations sells 3 in-app purchases, starting at $0.99 per 3 months. BasicATTCalc asks for nothing beyond the download.

BasicATTCalc ships an update every 29 months, Computer Science Calculations monthly. The most recent releases landed on September 20, 2026 and September 25, 2026 respectively.

## The numbers

| Metric | BasicATTCalc | Computer Science Calculations |
| --- | --- | --- |
| Price | $1.99 | **Free** |
| In-app purchases | **No** | Yes |
| Ads | **No** | Yes |
| Update frequency | Every 29 months | **Monthly** |
| Size | 7 MB | 26 MB |
| Requires iOS | **14.5** | 15.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [TAKAHIKO FUKUYAMA](https://appshunter.io/developer/857468511) | [Egal Net di Ettore Gallina](https://appshunter.io/developer/993232047) |

## What reviewers say

### BasicATTCalc

[App page](https://appshunter.io/ios/app/basicattcalc/id947238679)

**Features:** macOS Compatibility

**In-app purchases:** none


### 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 |


## Frequently asked questions

### Is BasicATTCalc free?

BasicATTCalc costs $1.99, with no in-app purchases.

### Is Computer Science Calculations free?

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

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

Computer Science Calculations shows ads; BasicATTCalc does not.

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

BasicATTCalc ships an update every 29 months, and Computer Science Calculations monthly. Most recently, BasicATTCalc was updated on September 20, 2026 and Computer Science Calculations on September 25, 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.*