# Calculator vs sci.calculator

The clearest difference is update cadence: Calculator at every 4 days against sci.calculator's every 5 weeks. Calculator also leads on iOS requirement (13.0 vs 15.0). On price, ads, in-app purchases and device support there is nothing between them.

Both are free to download. Calculator sells 1 one-off in-app purchase and sci.calculator sells 1 one-off in-app purchase. Whichever you choose, the download price is not the number that matters.

Calculator ships an update every 4 days, sci.calculator every 5 weeks. The most recent releases landed on July 5, 2026 and December 22, 2025 respectively.

## The numbers

| Metric | Calculator | sci.calculator |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.3 (9 ratings)](https://appshunter.io/ios/app/calculator-keyboard-support/id1458045987/reviews)** | — |
| Number of ratings | **9** | — |
| Positive reviews | 0.0% of reviews | — |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | **Every 4 days** | Every 5 weeks |
| Monetization | Free with in-app purchases | — |
| Size | 7 MB | 49 MB |
| Requires iOS | **13.0** | 15.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [JIE WANG](https://appshunter.io/developer/1119473827) | [Yukihiro Shioya](https://appshunter.io/developer/1565306192) |

## What reviewers say

### Calculator

[App page](https://appshunter.io/ios/app/calculator-keyboard-support/id1458045987)

Perform calculations directly from your keyboard with this productivity tool. The Pro version allows instant calculations without leaving your current app, enhancing efficiency.

**Highlights:** Keyboard calculation support, Instant calculation on keyboard (Pro), iOS Spotlight integration, General calculator functionality

**Features:** macOS Compatibility

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Pro | $1.99 | one-time |


### sci.calculator

[App page](https://appshunter.io/ios/app/scicalculator/id1620728508)

**Features:** macOS Compatibility

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| remove Ads | $1.99 | one-time |


## Frequently asked questions

### Is Calculator free?

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

### Is sci.calculator free?

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

### Do Calculator or sci.calculator have ads?

Neither Calculator nor sci.calculator shows ads.

### Which is updated more often, Calculator or sci.calculator?

Calculator ships an update every 4 days, and sci.calculator every 5 weeks. Most recently, Calculator was updated on July 5, 2026 and sci.calculator on December 22, 2025.

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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.*