# Stats tester mini vs Calculate Standard Deviation

The clearest difference is in-app purchases: Stats tester mini at none against Calculate Standard Deviation's 1. Stats tester mini also leads on ads (none vs shown). On price, update cadence, device support and iOS requirement there is nothing between them.

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

Stats tester mini ships an update every 4 months, Calculate Standard Deviation every 7 months. The most recent releases landed on October 11, 2026 and October 3, 2026 respectively.

## The numbers

| Metric | Stats tester mini | Calculate Standard Deviation |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[4.5 (62 ratings)](https://appshunter.io/ios/app/calculate-standard-deviation/id1591420646/reviews)** |
| Number of ratings | — | **62** |
| Positive reviews | — | 50.0% of reviews |
| In-app purchases | **No** | Yes |
| Ads | **No** | Yes |
| Update frequency | **Every 4 months** | Every 7 months |
| Monetization | — | Free with in-app purchases |
| Size | 4 MB | 39 MB |
| Requires iOS | 15.0 | 15.0 |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Hideki Ono](https://appshunter.io/developer/1401085377) | [Asad Ahsan](https://appshunter.io/developer/1326954499) |

## What reviewers say

### Stats tester mini

[App page](https://appshunter.io/ios/app/stats-tester-mini/id1445990637)

**Features:** macOS Compatibility

**In-app purchases:** none


### Calculate Standard Deviation

[App page](https://appshunter.io/ios/app/calculate-standard-deviation/id1591420646)

This app calculates standard deviation, variance, and other statistical measures for a given set of values. It simplifies complex statistical formulas with a user-friendly interface and accurate results.

**Highlights:** Calculate Standard Deviation, Calculate Variance, Calculate Mean, Calculate Coefficient of Variance, Calculate Standard Error of Mean, User-friendly interface, Accurate statistical results

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Standard Deviation Premium | $4.99 | one-time |


## Frequently asked questions

### Is Stats tester mini free?

Stats tester mini is free to download, with no in-app purchases.

### Is Calculate Standard Deviation free?

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

### Do Stats tester mini or Calculate Standard Deviation have ads?

Calculate Standard Deviation shows ads; Stats tester mini does not.

### Which is updated more often, Stats tester mini or Calculate Standard Deviation?

Stats tester mini ships an update every 4 months, and Calculate Standard Deviation every 7 months. Most recently, Stats tester mini was updated on October 11, 2026 and Calculate Standard Deviation on October 3, 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.*