# Scientific Computer vs Keycal

The clearest difference is update cadence: Keycal at daily against Scientific Computer's every 2 weeks. Scientific Computer's advantage is device support (3 vs 1) and iOS requirement (13.0 vs 17.0). On price, ads and in-app purchases there is nothing between them.

Both are free to download. Scientific Computer sells 1 in-app purchase, starting at $5.99 per 7 days and Keycal sells 1 one-off in-app purchase. Whichever you choose, the download price is not the number that matters.

Scientific Computer ships an update every 2 weeks, Keycal daily. The most recent releases landed on June 3, 2026 and September 18, 2026 respectively.

## The numbers

| Metric | Scientific Computer | Keycal |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (1 ratings)](https://appshunter.io/ios/app/scientific-computer/id6737824642/reviews)** | — |
| Number of ratings | **1** | — |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | Every 2 weeks | **Daily** |
| Monetization | Freemium | — |
| Size | 118 MB | 8 MB |
| Requires iOS | **13.0** | 17.0 |
| Devices | **iPhone, iPad, iPod** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [Wuhan Sheshou Technology Co.,Ltd.](https://appshunter.io/developer/1645260509) | [Parth Antala](https://appshunter.io/developer/1648952099) |

## What reviewers say

### Scientific Computer

[App page](https://appshunter.io/ios/app/scientific-computer/id6737824642)

This app offers a comprehensive suite of calculation tools, including basic, scientific, mortgage, and tax calculators. It also provides unit conversions, date calculations, and a compass with location data. Manage your finances, plan projects, and navigate with ease using its multifunctional features.

**Highlights:** Basic and scientific calculations, Mortgage and personal income tax calculator, Date and unit conversion, Compass with GPS data, Score calculator, Base conversion

**Features:** macOS Compatibility

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| One week membership | $5.99 | per 7 days |


### Keycal

[App page](https://appshunter.io/ios/app/keycal/id6744942632)

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Keycal+ | $4.99 | one-time |


## Frequently asked questions

### Is Scientific Computer free?

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

### Is Keycal free?

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

### Do Scientific Computer or Keycal have ads?

Neither Scientific Computer nor Keycal shows ads.

### Which is updated more often, Scientific Computer or Keycal?

Scientific Computer ships an update every 2 weeks, and Keycal daily. Most recently, Scientific Computer was updated on June 3, 2026 and Keycal on September 18, 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.*