# Average Calculator Pro vs Standard Deviation Calculate

The clearest difference is price: Standard Deviation Calculate at Free against Average Calculator Pro's $1.99. Standard Deviation Calculate also leads on update cadence (every 2 months vs every 21 months). Average Calculator Pro's advantage is in-app purchases (none vs 1). On ads, device support and iOS requirement there is nothing between them.

Standard Deviation Calculate is free to download; Average Calculator Pro costs $1.99 up front. Standard Deviation Calculate sells 1 one-off in-app purchase. Average Calculator Pro asks for nothing beyond the download.

Average Calculator Pro ships an update every 21 months, Standard Deviation Calculate every 2 months. Both last shipped on October 30, 2026.

## The numbers

| Metric | Average Calculator Pro | Standard Deviation Calculate |
| --- | --- | --- |
| Price | $1.99 | **Free** |
| Rating | — | **[4.3 (3 ratings)](https://appshunter.io/ios/app/standard-deviation-calculate/id1600862053/reviews)** |
| Number of ratings | — | **3** |
| Positive reviews | — | 66.7% of reviews |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 21 months | **Every 2 months** |
| Monetization | — | Free |
| Size | 10 MB | 5 MB |
| Requires iOS | 11.4 | **11.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Bhavinkumar Satashiya](https://appshunter.io/developer/1361485921) | [天一 邓](https://appshunter.io/developer/1056154014) |

## What reviewers say

### Average Calculator Pro

[App page](https://appshunter.io/ios/app/average-calculator-pro-mean/id1574164614)

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

**In-app purchases:** none


### Standard Deviation Calculate

[App page](https://appshunter.io/ios/app/standard-deviation-calculate/id1600862053)

This utility calculates the standard deviation of a dataset, a key statistical measure of data dispersion. It helps understand how spread out values are from the average, with applications in science, industry, and finance.

**Highlights:** Calculate standard deviation, Measure data dispersion, Understand variation from mean, Applications in science and finance, Statistical analysis tool

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 标准差计算器专业版 | $2.99 | one-time |


## Frequently asked questions

### Is Average Calculator Pro free?

Average Calculator Pro costs $1.99, with no in-app purchases.

### Is Standard Deviation Calculate free?

Standard Deviation Calculate is free to download, with in-app purchases available.

### Do Average Calculator Pro or Standard Deviation Calculate have ads?

Neither Average Calculator Pro nor Standard Deviation Calculate shows ads.

### Which is updated more often, Average Calculator Pro or Standard Deviation Calculate?

Average Calculator Pro ships an update every 21 months, and Standard Deviation Calculate every 2 months. Most recently, Average Calculator Pro was updated on October 30, 2026 and Standard Deviation Calculate on October 30, 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.*