# Standard Deviation Calc vs Standard Deviation

The clearest difference is in-app purchases: Standard Deviation at none against Standard Deviation Calc's 1. Standard Deviation also leads on update cadence (every 2 months vs every 5 months). On price, ads, device support and iOS requirement there is nothing between them.

Both are free to download. Standard Deviation Calc sells 1 one-off in-app purchase. Standard Deviation asks for nothing beyond the download.

Standard Deviation Calc ships an update every 5 months, Standard Deviation every 2 months. The most recent releases landed on September 21, 2026 and September 12, 2026 respectively.

## The numbers

| Metric | Standard Deviation Calc | Standard Deviation |
| --- | --- | --- |
| Price | Free | 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 | Yes | **No** |
| Ads | No | No |
| Update frequency | Every 5 months | **Every 2 months** |
| Monetization | Free with in-app purchases | — |
| Size | 2 MB | 21 MB |
| Requires iOS | 14.0 | **13.0** |
| Devices | iPhone, iPad, iPod | **iPhone, iPad, iPod, Mac** |
| Age rating | 4+ | 4+ |
| Developer | [Phan Nhat Đang](https://appshunter.io/developer/1437390098) | [Ahmad Sattar](https://appshunter.io/developer/1458483953) |

## What reviewers say

### 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 |


### Standard Deviation

[App page](https://appshunter.io/ios/app/standard-deviation-calculator/id6444146244)

**In-app purchases:** none


## Frequently asked questions

### Is Standard Deviation Calc free?

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

### Is Standard Deviation free?

Standard Deviation is free to download, with no in-app purchases.

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

Neither Standard Deviation Calc nor Standard Deviation shows ads.

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

Standard Deviation Calc ships an update every 5 months, and Standard Deviation every 2 months. Most recently, Standard Deviation Calc was updated on September 21, 2026 and Standard Deviation on September 12, 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.*