# Statistics Calculator++ — Confidence Intervals & Test

> Comprehensive statistics calculator with regression, probability, and data management. (iPhone/iPad app by Dogahe.)

- Source: https://appshunter.io/ios/app/statistics-calculator-plus-plus/id539195343 (this page in markdown: same URL + `.md`)
- Developer: [Dogahe](https://appshunter.io/developer/468657946)
- Category: Utilities, Finance
- Price: $2.99
- Rating: 4.10/5 from 309 App Store ratings · 64 written reviews indexed
- Age rating: 4+
- Requires: iOS 15.0 · 4 MB
- Languages: American English
- Released: 2012-08-08
- Data updated: 2026-08-26
- Monetization: free
- User reviews in markdown: https://appshunter.io/ios/app/statistics-calculator-plus-plus/id539195343/reviews.md

## What is Statistics Calculator++?

Simplify your statistics with Statistics Calculator++
Perform powerful statistical analysis without needing a manual. Enter your data easily using "Add X," "Add Y," and "Add Z" buttons, and let Statistics Calculator++ handle the rest. Analyze results in a clear table, including sum, mean, standard deviation, quartiles, and more. Visualize your data with box and whisker plots and histograms.

Powerful regression analysis:
Choose from linear, logarithmic, exponential, power, and quadratic regressions. The intuitive interface simplifies selecting models and calculating predictions for x and y values. View residuals, residual sum of squares, and how the regression model fits your data in a graph.

Save and import data with ease:
Store multiple data lists and use them in calculations effortlessly. Import data directly from Microsoft Excel or Apple Numbers. Plus, your data is always saved within the app, so you never lose it.

More than just statistics:
Probability distributions: Normal, Student's t, Chi-Squared, F, Binomial, Poisson, Geometric, Beta, and Gamma.
Confidence intervals and hypothesis tests: Step-by-step explanations for common statistical tests.
Advanced calculations: Fraction manipulation, angle conversions, permutation/combination, LCM/GCD, prime factorization, quadratic solver, system of linear equations solver, rectangular/polar conversions, dice rolling.

Statistics Calculator++ is a powerful and user-friendly tool for:
Students
Scientists
Engineers
Anyone who needs statistical analysis

Download Statistics Calculator++ today and experience the simplicity of powerful statistics!

## Key features

- 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

## What do users think of Statistics Calculator++?

Overall sentiment: mixed

**Pros**

- 👍 Easy to use and intuitive interface
- 📊 Comprehensive statistics and regression functionality
- 💰 Affordable pricing
- 🎨 Good visual design and graphics
- 📈 Multiple regression models available
- 🔒 No data collection or privacy concerns
- ⚡ Quick calculations for statistics
- 📋 Ability to view and edit entered data easily

**Cons**

- 🐛 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
- 🔄 Unintuitive data entry and clearing process
- ⚙️ Limited customization for input methods
- 🎯 Misleading feature descriptions in app store

**Commonly 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
- Missing advertised features (nCr function)

**Most 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
- Graphing for all input/output scenarios
- Direct proportion input without requiring trial counts
- Improved random number generator with proper seeding
- Plotting of regression models
- Two-sided interval calculations for alpha values

## Recent user reviews (10 of 64)

All indexed reviews: https://appshunter.io/ios/app/statistics-calculator-plus-plus/id539195343/reviews.md

### 1/5 — Freezes

*2024-04-10, version 1.72*

Paid for the app and it freezes after using the calculator for less than a minute every time I open the app

### 1/5 — Only a few equations

*2023-09-03*

Not worth it

**Developer response:** Thanks for your feedback. Our app actually has a wide range of statistics features. We'd be happy to answer any questions you have about the app.

### 5/5 — Love the app.

*2022-10-12, version 1.66*

Generally exceptional. One issue is that data entry is landscape but to clear the data you have to change to portrait and clear the buffers then click “done” twice, to return to data entry mode again, surely this could be more streamlined?

### 5/5 — Awesome

*2022-06-12*

Yeah bring more features

### 5/5 — Advanced

*2021-11-22*

Very good

### 2/5 — Critical vals? P decimal percentage input?

*2021-11-07, version 1.65*

Correct me if I’m wrong - and really mean this, but I cannot find anywhere that I can put in whatever quaNtile -not quartile - I want and get the associated statistic critical value for specified alpha level. I also couldn’t figure out how to do alpha divided by two for two-sided interval in order to get once again a critical value. I was forced to do .02 or .03 (because it was an incremental dial where no in-between value of .025 be put in) but not the commonly interest 95% CI critical values for my binomial proportion (2-sided) N approx. I tried to input a proportion estimate with large n an normal distributed p-hat I but it I was required to state the number of trials and number of successes. Sometimes the information doesn’t come like that. sometimes it comes in the form of a proportion directly. The setup of the app was not intuitive for me.What is the opening page with a calculator on it? I wanted simple p-values for given x AND specified significance levels; critical values for doing my CI by hand…. I wanted something quick and handy over using SAS or R for these simple summary stats. Please correct me if I have over looked some of tour calculator’s function i have no problem being corrected. It seems to have a lot of features but i cant figure anything out of what I need to do for my assignments. Is there some no Manual for your Calc? What it is nice is that it shows you a graph of your distribution - now this is very helpful that i have not seen on other stat apps. I wish such could be generated for all input/output whenever possible. This seems to be well thought out. I was surprised to see confidence intervals for proportions. However as I said before I couldn’t figure out how to get the things I needed concerning them. If corrected i will gladly change my review. I want this Calc to work for me like on an open book exam rather than SAS. Also many many thanks for not collecting data. That’s unique also to this app and you developers. I did buy the full function version perhaps that you have resources to continue to perfect it and support of what you have done thus far - very very significant even if I don’t comprehend it. It’s super reasonably priced. Thank you again for this. Sorry for the harshness of your hard work - i just don’t get it.

### 1/5 — I am here trying to tap on the statistics part and it won’t open for nothing

*2021-09-26*

I will try a couple times then I will no if it is not worth it

**Developer response:** If you are trying to calculate statistics measures of a list of numbers, first use Add X, Add Y to enter your numbers. Then in the statistics section you will see the calculations.

### 4/5 — I wish you could input Z-scores into normal distribution

*2021-06-12*

There is a few improvements but big one would be for you to swap input scores.

**Developer response:** Could you please explain in more details what exactly you want as far as inputting z-scores and also swapping scores? Feel free to send us an email explaining in more details and if possible some screenshots of which views in the app you would like the improvements and what problem you are you trying to solve. calc@dogahe.com

### 5/5 — Great tools

*2021-03-15*

Súper color

### 5/5 — Easy to Use!

*2020-12-22*

The calculator is easy to use, straight forward ,and doesn’t have any problems I’ve found so far. Thanks!

**Developer response:** Thanks a lot for the feedback and the kind words. ☺️ We are glad you found Statistics Calculator++ easy to use.

## Frequently asked questions about Statistics Calculator++

### What kind of statistical analysis can I perform with this app?

This app allows for comprehensive statistical analysis, including calculating sums, means, standard deviations, and quartiles. It also supports powerful regression analysis with various model types and provides visualizations like box and whisker plots and histograms.

### Can I save and import my data?

Yes, you can save multiple data lists within the app for easy access and reuse in calculations. The app also supports importing data directly from Microsoft Excel or Apple Numbers files, ensuring you never lose your data.

### What probability distributions are supported?

The app includes support for a wide range of probability distributions, such as Normal, Student's t, Chi-Squared, F, Binomial, Poisson, Geometric, Beta, and Gamma distributions.

### Is this app suitable for students and professionals?

Absolutely. The app is designed to be a powerful yet user-friendly tool for students, scientists, engineers, and anyone who needs to perform statistical analysis. It simplifies complex calculations and provides clear results.

### Does the app offer features beyond core statistics?

Yes, in addition to core statistical functions, the app offers advanced calculations like fraction manipulation, angle conversions, permutation/combination calculations, LCM/GCD, prime factorization, quadratic solvers, and system of linear equations solvers.

## Version history (last 5 releases)

### 1.73 — 2025-12-26

- Bug fixes
- Updated for iOS 26

### 1.72 — 2024-03-04

Great news!  We expanded the availability of our latest features. Now, users with iPhones running iOS 15.0 and above can experience everything we introduced in the recent update. This means even more people can enjoy the app's full potential.

### 1.71 — 2024-02-26

- We redesigned the statistics and regression views for a more modern look and ease of navigation.  
- Added screenshots in the App Store for smaller iPhone sizes.

### 1.70 — 2024-02-20

We redesigned the statistics and regression views for a more modern look and ease of navigation. We hope you like the new design. Please let us know what you think.

### 1.69 — 2023-06-11

We changed the default color of the buttons. If you don't like them, don't worry, because we also added a feature that you can set the color of the buttons based on your preference. This update also extends the support for the dark mode for the main screen.

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All apps by Dogahe: https://appshunter.io/developer/468657946

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*Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-08-26.*