# Scientific CalcX vs Numeric Correction Calculator

The clearest difference is price: Numeric Correction Calculator at Free against Scientific CalcX's $1.99. Numeric Correction Calculator also leads on in-app purchases (none vs 1) and update cadence (fortnightly vs every 8 months). Scientific CalcX's advantage is ads (none vs shown). On device support and iOS requirement there is nothing between them.

Numeric Correction Calculator is free to download; Scientific CalcX costs $1.99 up front. Scientific CalcX sells 1 one-off in-app purchase. Numeric Correction Calculator asks for nothing beyond the download.

Scientific CalcX ships an update every 8 months, Numeric Correction Calculator fortnightly. The most recent releases landed on October 12, 2026 and October 9, 2026 respectively.

## The numbers

| Metric | Scientific CalcX | Numeric Correction Calculator |
| --- | --- | --- |
| Price | $1.99 | **Free** |
| In-app purchases | Yes | **No** |
| Ads | **No** | Yes |
| Update frequency | Every 8 months | **Fortnightly** |
| Size | 2 MB | 9 MB |
| Requires iOS | 16.0 | **15.4** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Hangzhou Lake Snow Technology Co., Ltd.](https://appshunter.io/developer/1439688130) | [Nobuyuki Kumakura](https://appshunter.io/developer/1529070760) |

## What reviewers say

### Scientific CalcX

[App page](https://appshunter.io/ios/app/scientific-calcx/id1439688401)

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Scientific CalcX Premium | $3.99 | one-time |


### Numeric Correction Calculator

[App page](https://appshunter.io/ios/app/numeric-correction-calculator/id6449193336)

**In-app purchases:** none


## Frequently asked questions

### Is Scientific CalcX free?

Scientific CalcX costs $1.99, and also offers in-app purchases.

### Is Numeric Correction Calculator free?

Numeric Correction Calculator is free to download, with no in-app purchases.

### Do Scientific CalcX or Numeric Correction Calculator have ads?

Numeric Correction Calculator shows ads; Scientific CalcX does not.

### Which is updated more often, Scientific CalcX or Numeric Correction Calculator?

Scientific CalcX ships an update every 8 months, and Numeric Correction Calculator fortnightly. Most recently, Scientific CalcX was updated on October 12, 2026 and Numeric Correction Calculator on October 9, 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.*