# Standard Deviation Calculate vs XN Player

The clearest difference is rating: XN Player at 5.0 against Standard Deviation Calculate's 4.3. XN Player also leads on in-app purchases (none vs 1) and update cadence (fortnightly vs every 2 months). Standard Deviation Calculate's advantage is iOS requirement (11.0 vs 14.0). On price, ratings volume, ads and monetization model there is nothing between them.

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

XN Player holds the better App Store score, 5.0 against 4.3. Both are backed by a comparable volume of ratings — 3 and 6 respectively.

Standard Deviation Calculate ships an update every 2 months, XN Player fortnightly. The most recent releases landed on September 28, 2026 and September 17, 2026 respectively.

## The numbers

| Metric | Standard Deviation Calculate | XN Player |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.3 (3 ratings)](https://appshunter.io/ios/app/standard-deviation-calculate/id1600862053/reviews) | **[5.0 (6 ratings)](https://appshunter.io/ios/app/xn-player-audio-filedocument/id6446119130/reviews)** |
| Number of ratings | 3 | **6** |
| Positive reviews | — | 100.0% of reviews |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Every 2 months | **Fortnightly** |
| Monetization | Free | Free |
| Size | 5 MB | 101 MB |
| Requires iOS | **11.0** | 14.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 4+ | 17+ |
| Developer | [天一 邓](https://appshunter.io/developer/1056154014) | [杰 林](https://appshunter.io/developer/1602113131) |

## What reviewers say

### Standard Deviation Calculate

[App page](https://appshunter.io/ios/app/standard-deviation-calculate/id1600862053)

This utility calculates the standard deviation of a dataset, a key statistical measure of data dispersion. It helps understand how spread out values are from the average, with applications in science, industry, and finance.

**Highlights:** Calculate standard deviation, Measure data dispersion, Understand variation from mean, Applications in science and finance, Statistical analysis tool

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 标准差计算器专业版 | $2.99 | one-time |


### XN Player

[App page](https://appshunter.io/ios/app/xn-player-audio-filedocument/id6446119130)

This application plays a wide range of audio, video, and subtitle file formats without requiring conversion. It allows streaming from remote devices and offers extensive playback controls, file management, and gesture support.

**Highlights:** Plays all video and audio formats without conversion, Streams media from remote devices, Gesture controls for playback, volume, and brightness, Supports various subtitle and image file types, File and playlist management with folder lock, Playback speed control and hardware acceleration

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Standard Deviation Calculate free?

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

### Is XN Player free?

XN Player is free to download, with no in-app purchases.

### Which has better reviews, Standard Deviation Calculate or XN Player?

XN Player is rated higher. Standard Deviation Calculate averages 4.3 out of 5 from 3 ratings, while XN Player averages 5.0 from 6 ratings.

### Do Standard Deviation Calculate or XN Player have ads?

Neither Standard Deviation Calculate nor XN Player shows ads.

### Which is updated more often, Standard Deviation Calculate or XN Player?

Standard Deviation Calculate ships an update every 2 months, and XN Player fortnightly. Most recently, Standard Deviation Calculate was updated on September 28, 2026 and XN Player on September 17, 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.*