# Standard Deviation Calculator — user reviews

> 20 indexed App Store user reviews of Standard Deviation Calculator by Keely Hill, rated 2.40/5 from 24 ratings.

- Source: https://appshunter.io/ios/app/standard-deviation-calculator/id721321543/reviews
- App overview in markdown: https://appshunter.io/ios/app/standard-deviation-calculator/id721321543.md
- Rating breakdown: 5★ 7 · 4★ 0 · 3★ 2 · 2★ 1 · 1★ 14

## Newest reviews (1 of 20)

### 1/5 — Bad

*2014-11-05, version 1.3*

Does not let me scroll down to add more. 1 star boiii

## Most critical reviews (10 lowest-rated)

### 1/5 — FFAARRTT

*2021-10-25, version 2.1*

App is poopoo

### 1/5 — Worst app=bad grade😠🤷🏻‍♀️🤷🏻‍♀️🤷🏻‍♀️😭

*2019-10-25, version 2.1*

Worst app. Made me get a 30% in math. Thx diptards.

### 1/5 — Yuck

*2019-01-24, version 2.1*

Why make such a terrible app?

### 1/5 — Terrible

*2018-12-18, version 2.1*

This calculator only does sample standard deviation. (n-1 in the denominator) It should be labeled as such in both the title and the data output

### 1/5 — Giey

*2018-10-15, version 2.1*

Giey, gay, giieyyyy

### 1/5 — Crashed after editing a data set

*2017-09-16, version 2.1*

Didn't save. Don't waste your time

### 1/5 — Keeps Crashing

*2016-07-26, version 2.0*

Every time I go back to edit or delete a number/item the app closes forcing me to start over. Very inconvenient. If it that didn't happen I'd give the app 5 stars.

### 1/5 — Incorrect Median

*2015-05-18, version 1.3*

Incorrect data output. Very disappointed I will not get my 99 cents back

### 1/5 — Unable to scroll down

*2015-05-02, version 1.3*

This doesn't allow for 10 numbers and unable to scroll down and make row corrections. Sorry I paid the extra for the locked features.

### 1/5 — No negative numbers

*2014-11-05, version 1.3*

Doesn't work

## Most praised reviews (9 highest-rated)

### 5/5 — GREAT APP

*2023-02-09, version 2.1*

Not understanding all the negative reviews… great app in my opinion as a stats student

### 5/5 — 10/10

*2016-08-20, version 2.0*

Okay, I never write reviews but this app I think has changed my life and the fact that it is free makes it 100 times better. I doesn't just do standard deviation but so much more! I would recommend this to anyone with a lot of math that they don't want to do by hand

### 5/5 — This app changed my life for good

*2016-04-11, version 2.0*

This app does wonders. I'm a new person. Before this app I was failing my math class but now I'm making a 99.99. 10/10 would recommend

### 5/5 — Best app ever!!

*2013-10-17, version 1.0*

I don't know how I ever lived without it!

### 2/5 — Student

*2017-09-19, version 2.1*

All was correct except for Q3, please fix.

### 2/5 — Need to fix

*2016-01-26, version 1.3*

How do you delete a row? Can not add past 19 numbers.

### 2/5 — Value entries flawed on iPhone

*2014-07-01, version 1.3*

The app does what it is suppose to. Works ok on iPad. However, the publisher needs to fix the value entry aspect on the iPhone as you cannot see anything past about eight entries. It will also ask you to "delete a row" but has no explanation on how to do this (can't delete what you can't scroll down to see). Row deletion seems to be a common problem no matter if it is on the iPad or the iPhone. A fix for this would be warranted.

### 2/5 — Needs Work

*2014-01-01*

Standard Deviation and Mean values have been mixed up, by the look of it.

### 2/5 — Incorrect labels

*2013-12-18, version 1.2*

You have the labels for mean and standard deviation swapped.

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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 2026-06-07.*