# Statistics Calculator++ vs Standard Deviation

The clearest difference is price: Standard Deviation at Free against Statistics Calculator++'s $0.99. Standard Deviation also leads on device support (4 vs 2) and iOS requirement (13.0 vs 15.0). Statistics Calculator++'s advantage is update cadence (every 3 weeks vs every 2 months). On ads and in-app purchases there is nothing between them.

Standard Deviation is free to download; Statistics Calculator++ costs $0.99 up front. Neither carries in-app purchases, so what you see is what you pay.

Statistics Calculator++ ships an update every 3 weeks, 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 | $0.99 | **Free** |
| Rating | **[4.1 (309 ratings)](https://appshunter.io/ios/app/statistics-calculator-plus-plus/id539195343/reviews)** | — |
| Number of ratings | **309** | — |
| Positive reviews | 62.5% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 3 weeks** | Every 2 months |
| Monetization | Free | — |
| Size | 4 MB | 21 MB |
| Requires iOS | 15.0 | **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-plus-plus/id539195343)

Perform advanced statistical analysis, including regression and probability distributions, with ease. Visualize data through plots and tables, and save or import datasets from spreadsheets. Offers a wide range of calculations beyond core statistics.

**Highlights:** Data entry and analysis table, Box and whisker plots and histograms, Linear, logarithmic, exponential, power, quadratic regressions, Save and import data from Excel/Numbers, Normal, t, Chi-Squared, F, Binomial, Poisson distributions, Confidence intervals and hypothesis tests, Fraction manipulation, angle conversions, solvers

**Features:** Vision Pro support

**In-app purchases:** none

**What reviewers like**

- 👍 Easy to use and intuitive interface
- 📊 Comprehensive statistics and regression functionality
- 💰 Affordable pricing
- 🎨 Good visual design and graphics
- 📈 Multiple regression models available

**What reviewers complain about**

- 🐛 App freezes during use
- ❌ Limited equation/function options
- 🧭 Poor navigation and confusing layout
- 📖 Lack of clear instructions or user manual
- 💳 Additional in-app purchases required for full features

**Reported bugs**

- App freezes after brief use
- Statistics section won't open
- Incompatibility with iOS 7
- Random number generator produces predetermined sequences
- Landscape/portrait mode switching issues

**Requested features**

- User manual or tutorial documentation
- Ability to input custom quantiles and critical values
- Support for Z-score input in normal distribution
- Streamlined data clearing process
- Quadratic and advanced regression options


### 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++ costs $0.99, with no in-app purchases.

### 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 3 weeks, 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.*