# Standard Deviation Calculator vs Standard Deviation

The clearest difference is in-app purchases: Standard Deviation at none against Standard Deviation Calculator's 1. Standard Deviation Calculator's advantage is iOS requirement (6.1 vs 13.0). On price, update cadence, ads and device support there is nothing between them.

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

Standard Deviation Calculator ships an update every 5 weeks, Standard Deviation every 2 months. The most recent releases landed on October 12, 2026 and September 30, 2026 respectively.

## The numbers

| Metric | Standard Deviation Calculator | Standard Deviation |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[2.4 (24 ratings)](https://appshunter.io/ios/app/standard-deviation-calculator/id721321543/reviews)** | — |
| Number of ratings | **24** | — |
| Positive reviews | 20.0% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | **Every 5 weeks** | Every 2 months |
| Monetization | Free with in-app purchases | — |
| Size | 2 MB | 21 MB |
| Requires iOS | **6.1** | 13.0 |
| Devices | iPhone, iPad, iPod | **iPhone, iPad, iPod, Mac** |
| Age rating | 4+ | 4+ |
| Developer | [Keely Hill](https://appshunter.io/developer/1039644107) | [Ahmad Sattar](https://appshunter.io/developer/1458483953) |

## What reviewers say

### Standard Deviation Calculator

[App page](https://appshunter.io/ios/app/standard-deviation-calculator/id721321543)

Calculate statistical measures like standard deviation, mean, variance, and median for a dataset. It also offers population deviation and the ability to compute z-scores based on your input data.

**Highlights:** Calculate standard deviation, Calculate mean (average), Calculate variance, Calculate population deviation, Calculate median, Calculate Q1 & Q3, Calculate z-score

**Features:** macOS Compatibility

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| More Results | Free | 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 Calculator free?

Standard Deviation Calculator 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 Calculator or Standard Deviation have ads?

Neither Standard Deviation Calculator nor Standard Deviation shows ads.

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

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