# Mean vs Standard Deviation Calc

The clearest difference is price: Standard Deviation Calc at Free against Mean's $1.99. Standard Deviation Calc also leads on update cadence (every 5 months vs every 56 months). Mean's advantage is in-app purchases (none vs 1) and iOS requirement (12.2 vs 14.0). On ads and device support there is nothing between them.

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

Mean ships an update every 56 months, Standard Deviation Calc every 5 months. The most recent releases landed on September 3, 2026 and September 21, 2026 respectively.

## The numbers

| Metric | Mean | Standard Deviation Calc |
| --- | --- | --- |
| Price | $1.99 | **Free** |
| Rating | — | **[3.7 (11 ratings)](https://appshunter.io/ios/app/standard-deviation-calc-sd/id1497525733/reviews)** |
| Number of ratings | — | **11** |
| Positive reviews | — | 0.0% of reviews |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 56 months | **Every 5 months** |
| Monetization | — | Free with in-app purchases |
| Size | 1 MB | 2 MB |
| Requires iOS | **12.2** | 14.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Ajay Gorasiya](https://appshunter.io/developer/1455174866) | [Phan Nhat Đang](https://appshunter.io/developer/1437390098) |

## What reviewers say

### Mean

[App page](https://appshunter.io/ios/app/mean-statistics-calculators/id1483009718)

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

**In-app purchases:** none


### Standard Deviation Calc

[App page](https://appshunter.io/ios/app/standard-deviation-calc-sd/id1497525733)

Calculate standard deviation for sample or population data. Input numerical values to find standard deviation, count, sum, mean, variance, and more. Get quick statistical insights with this easy-to-use tool.

**Highlights:** Calculate standard deviation, Sample or population data, Compute mean and variance, Count numerical values, Sum of numbers, List of differences

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Remove ads | $1.99 | one-time |


## Frequently asked questions

### Is Mean free?

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

### Is Standard Deviation Calc free?

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

### Do Mean or Standard Deviation Calc have ads?

Neither Mean nor Standard Deviation Calc shows ads.

### Which is updated more often, Mean or Standard Deviation Calc?

Mean ships an update every 56 months, and Standard Deviation Calc every 5 months. Most recently, Mean was updated on September 3, 2026 and Standard Deviation Calc on September 21, 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.*