# Statistics Calculator vs Standard Deviation

The clearest difference is in-app purchases: Standard Deviation at none against Statistics Calculator's 2. Standard Deviation also leads on update cadence (every 2 months vs every 21 months) and device support (4 vs 2). On price and ads there is nothing between them.

Both are free to download. Statistics Calculator sells 2 one-off in-app purchases. Standard Deviation asks for nothing beyond the download.

Statistics Calculator ships an update every 21 months, Standard Deviation every 2 months. The most recent releases landed on September 24, 2026 and September 12, 2026 respectively.

## The numbers

| Metric | Statistics Calculator | Standard Deviation |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.4 (317 ratings)](https://appshunter.io/ios/app/statistics-calculator/id1185124478/reviews)** | — |
| Number of ratings | **317** | — |
| Positive reviews | 57.1% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Every 21 months | **Every 2 months** |
| Monetization | Free with in-app purchases | — |
| Size | 4 MB | 21 MB |
| Requires iOS | 15.6 | **13.0** |
| Devices | iPhone, iPod | **iPhone, iPad, iPod, Mac** |
| Age rating | 4+ | 4+ |
| Developer | [Dogahe](https://appshunter.io/developer/468657946) | [Ahmad Sattar](https://appshunter.io/developer/1458483953) |

## What reviewers say

### Statistics Calculator

[App page](https://appshunter.io/ios/app/statistics-calculator/id1185124478)

This app provides essential statistical calculations and regression analysis with an intuitive interface. Easily input data, view statistical measures, and perform various regression models. Advanced features are unlocked via in-app purchases.

**Highlights:** List data entry and management, Basic statistical measures (mean, std dev, etc.), Linear, logarithmic, exponential, power regression, Regression model graphing, Probability distributions, Confidence intervals, Hypothesis tests

**Features:** Vision Pro support

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Full Access - All Features | $2.99 | one-time |
| Statistics Calculator++ | $2.99 | one-time |


### Standard Deviation

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

**In-app purchases:** none


## Frequently asked questions

### Is Statistics Calculator free?

Statistics 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 Statistics Calculator or Standard Deviation have ads?

Neither Statistics Calculator nor Standard Deviation shows ads.

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

Statistics Calculator ships an update every 21 months, and Standard Deviation every 2 months. Most recently, Statistics Calculator was updated on September 24, 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.*