Comparison

Kidrend vs Calculate Standard Deviation

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

Kidrend

Features
Read full description

Kidrend is an interactive app connecting schools & parents in Africa. Kidrend provides daily updates on student's academic, behavior, health, medical, food, and extracurricular activities. We know how hard it can be for parents and teachers to keep up with student’s homework, deadlines, school events, grades, exams, PTA events and other school activities. Kidrend is a one-stop solution that offers effective parent-teacher interaction allowing parents and teachers to easily stay on top of all student’s activities and progress. Our mission is to make communication easy and efficient so that learning can remain the top priority. Features: 1. Parents receive daily updates on student's academic, behavior, health, medical, food, and extracurricular activities 2. Real-time chat between parents and teachers 3. Teachers can communicate with the parents who have students in their classes 4. Parents and teachers receive updates on PTA matters 5. Principals receive daily notifications on school-wide activities 6. Schools receive a full operations management backend system 7. The app offers student drop-offs and pick-up management 8. The app offers school clubs management 9. The app offers school events and announcements management 10. The app offers school-to-parent instant notifications for announcing shutdowns, emergencies, reminders, and any other vital information

About

Calculate Standard Deviation

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
Read full description

Make a use of this standard deviation calculator app to attain the results for standard deviation calculations right now: In the context of statistics, the term standard deviation (SD) refers to the variation or dispersion of the data set of values. A lower SD (also called estimated value) shows that the data points exist very close to the origin. Whereas a higher value of it leads the data points to disperse over a wider range of the values. Use this standard deviation app to determine the standard deviation and variance with a single click. With the help of SD, you can easily find how close the sample mean is to the actual mean of the population. You can use this standard deviation calculator app for to generate absolute outputs. Calculate Standard Deviation of A Set of Values: The SD is calculator on the basis of the following terms: Count of Values: It is the number of the values in the data set. Total Sum of Values: Summation represents the addition of all the values that are given in the data set Standard Mean: It refers to the average of all the values in the set of values. Use this mean and standard deviation calculator to find the mean instantly. Variance: The actual dispersion of data from the mean position is called variance. You can work for the variance with the help of this variance calculator. Coefficient of Variance: The amplitude of the data dispersion about the mean is known as coefficient of variance. Standard Error of Mean: The approximate deviation of the population from mean is known as standard error of mean. This standard error calculator helps you to estimate the actual error of mean precisely. SD helps you in performing various statistical calculations with larger data sets. Now there’s no need to stick with daunting statistical formulas to proceed with SD calculation as our variance and standard deviation calculator does all in a few clicks. Apart from the formulas that are difficult to remember, it is a better practice to use this app for absolutely. How Does It Work? This mean absolute deviation calculator app determines the following terms: Standard Deviation Count of Values Total Sum of Values Mean of The Values Variance Coefficient of Variance Standard Error of Mean (SE) Other Features Includes: User-Friendly Interface An easy to use keyboard with a particular key to enter repetition of same number with one single tap Versatile input box that enlarges as you write data point values Most accurate statistical results The standard deviation tells you how wide and curved the graph will be. If you know the above mentioned terms, you have everything that you need in actual for determining standard deviation. Also for the sake of you people, standard deviation calculator is designed to find accurate output corresponding to the terms defined. Hope it will help you for sure. Privacy Policy: https://calculator-online.net/privacy-policy/ Terms of Service: https://calculator-online.net/terms-of-service/

Screenshots

Kidrend4 screens
Calculate Standard Deviation4 screens

Verdict

The call

The clearest difference is in-app purchases: Kidrend at none against Calculate Standard Deviation's 1. Kidrend also leads on ads (none vs shown) and update cadence (every 5 weeks vs every 7 months). On price and device support there is nothing between them.

Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS

CostPrice · In-app purchases · Ads · Monetization

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

UpkeepUpdate frequency

Kidrend ships an update every 5 weeks, Calculate Standard Deviation every 7 months. The most recent releases landed on September 25, 2026 and October 3, 2026 respectively.

Scorecard4 real differences · 6 level
Kidrend versus Calculate Standard Deviation: the parameters behind the verdict, then further details
ParameterKidrendCalculate Standard Deviation
PriceFreeFree
Rating—4.5 (62 ratings) — better
Positive reviews—50.0% of reviews
Number of ratings—62 — better
Update frequencyEvery 5 weeks — betterEvery 7 months
AdsNo — betterYes
In-app purchasesNo — betterYes
Monetization—Free with in-app purchases
DevicesiPhone, iPad, iPodiPhone, iPad, iPod
Requires iOS12.0 — better15.0
Further details — not scored
Size52 MB39 MB
Age rating4+4+
DeveloperJohn AgbudeAsad Ahsan

In-app purchases

None

Kidrend

No in-app purchases

1 purchases

Calculate Standard Deviation

One-time1
  • Standard Deviation Premium$4.99

Questions

Is Kidrend free?
Kidrend 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.
Do Kidrend or Calculate Standard Deviation have ads?
Calculate Standard Deviation shows ads; Kidrend does not.
Which is updated more often, Kidrend or Calculate Standard Deviation?
Kidrend ships an update every 5 weeks, and Calculate Standard Deviation every 7 months. Most recently, Kidrend was updated on September 25, 2026 and Calculate Standard Deviation on October 3, 2026.

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