# Biostats Buddy vs Calculate Standard Deviation

The clearest difference is rating: Calculate Standard Deviation at 4.5 against Biostats Buddy's 3.8. Calculate Standard Deviation also leads on ratings volume (62 vs 4). Biostats Buddy's advantage is in-app purchases (none vs 1) and ads (none vs shown). On price, review sentiment and device support there is nothing between them.

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

Calculate Standard Deviation holds the better App Store score, 4.5 against 3.8. That said, the two scores are not equally well evidenced: Calculate Standard Deviation has 62 ratings behind it against 4, so its average is the more settled of the two. Written reviews split almost evenly too, at 50% and 50% positive.

## The numbers

| Metric | Biostats Buddy | Calculate Standard Deviation |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [3.8 (4 ratings)](https://appshunter.io/ios/app/biostats-buddy/id1110450142/reviews) | **[4.5 (62 ratings)](https://appshunter.io/ios/app/calculate-standard-deviation/id1591420646/reviews)** |
| Number of ratings | 4 | **62** |
| Positive reviews | 50.0% of reviews | 50.0% of reviews |
| In-app purchases | **No** | Yes |
| Ads | **No** | Yes |
| Update frequency | — | Every 7 months |
| Monetization | **Free** | Free with in-app purchases |
| Size | 12 MB | 39 MB |
| Requires iOS | **8.0** | 15.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [California State University, Northridge](https://appshunter.io/developer/677332864) | [Asad Ahsan](https://appshunter.io/developer/1326954499) |

## What reviewers say

### Biostats Buddy

[App page](https://appshunter.io/ios/app/biostats-buddy/id1110450142)

This app assists with common biostatistics calculations, offering formulas and variable descriptions to aid understanding and retention. It simplifies the process of entering data and finding results for various statistical procedures.

**Highlights:** Biostatistics procedure calculations, Includes formulas, Variable descriptions for retention, User-friendly data entry, Z-scores, One sample z tests, One sample t tests, Two related sample t tests

**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 Biostats Buddy free?

Biostats Buddy 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.

### Which has better reviews, Biostats Buddy or Calculate Standard Deviation?

Calculate Standard Deviation is rated higher. Biostats Buddy averages 3.8 out of 5 from 4 ratings, while Calculate Standard Deviation averages 4.5 from 62 ratings.

### Do Biostats Buddy or Calculate Standard Deviation have ads?

Calculate Standard Deviation shows ads; Biostats Buddy does not.

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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.*