Comparison

Quick Correlation Coefficients vs iAspire

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

Head to head
About

Quick Correlation Coefficients

This app calculates the correlation coefficient between two or three sets of numerical data. It offers flexible data entry methods, including a slider and keypad, and handles missing values to compute relationships accurately.

Highlights
  • Calculate correlation coefficient (rho)
  • Relate two or three data sets
  • Slider data entry
  • Keypad data entry
  • Handles missing data (n/a)
  • Minimum 3 data pairs required
Features
Read full description

The correlation coefficient (commonly noted by the Greek letter rho, ρ) measures the degree to which two sets of numbers are related. The correlation coefficient can range from -1.000 to +1.000 with a 0 indicating that there is no relation between the two sets. A 'slider' data entry option allows rapid creation of numerical data. Additionally, you may use the 'keypad' data entry option to expand the numerical range beyond plus or minus 1,000. In this application, you may relate two or three sets of numbers and the correlations between the sets are shown as ρ(AB), ρ(AC), and ρ(BC), where the letters A, B, and C represent the columns. There must be at least 3 pairs of numbers in any 2 rows for the correlation coefficient to be computed. Zero is a number but 'n/a' is not. If, for example, Column A has 5 rows of numbers and the 6th row is 'n/a' and Column B has 4 rows of numbers and the 5th row is 'n/a', the correlation coefficient, ρ(AB), will be computed for the first 4 pairs of numbers.

About

iAspire

This app streamlines teacher observations, evaluations, and professional development. It facilitates feedback, artifact collection, and personalized growth plans to enhance staff performance and school culture. The platform also supports school-wide pulse surveys and recognition programs.

Highlights
  • Teacher observation and evaluation tools
  • Artifact collection (photos, videos)
  • Customizable observation forms
  • Micro-learning professional development
  • Professional growth plan creation
  • School culture pulse surveys
  • Recognition and feedback cadences
Features
Read full description

iAspire is software that serves as your teacher evaluation, professional development, and culture assistant. iAspire will run your teacher observation processes, allow your staff to enroll in professional development, and even help you build a stronger school culture. TEACHER OBSERVATIONS AND EVALUATIONS Save precious time and energy by using teacher evaluation software. Provide immediate feedback to your teachers, collect data over time, and make data-informed decisions. iAspire allows you to take pictures and videos in the classroom to use as artifacts. Teachers can also upload artifacts as evidence. Do you have observations forms you need to use? With iAspire, you will have access to your own customized teacher observation, walkthrough, and evaluation forms. If you don’t have your own forms, you can use the iAspire observation and evaluation forms created from synthesizing expert models such as those from Charlotte Danielson, Robert Marzano, Stronge and Associates, McREL, Marshall, 5Ds, and others. iAspire can even drive your process and make sure your observations are completed on time throughout the school year. PROFESSIONAL DEVELOPMENT Provide the coaching and professional development your teachers want, whenever it's most convenient for them. iAspire Coaching Experiences typically last between three to five weeks and use micro-learning experiences that are research- and evidence-based to build your staff’s performance over time. Once your staff members enrolls in coaching, bite-sized interactions, including coaching content, impactful videos, self reflections, and even activity plans, are automatically sent for your staff to engage with whenever it's most convenient for them. PROFESSIONAL GROWTH PLANS iAspire Professional Growth Plans use a proven method to help your team make progress and achieve the professional and/or personal goals that matter most to them. iAspire Growth Plans are designed for success because they start with why, maintain focus on one important goal, and help people track the activities that must be consistently repeated to actually accomplish their goal. They help people identify their next step and take it, and they provide accountability for the progress that needs to be made along the way. SCHOOL CULTURE Create an environment where your team feels heard and appreciated for the amazing work they do. Positive relationships are critical to the success of your school. iAspire will help you establish and maintain regular cadences of recognition, celebration, and feedback. You can also administer pulse surveys to keep a pulse on your organization and collect input from your team. SUPPORT YOU CAN COUNT ON iAspire is your trusted partner and will be here for you every step of the way. We're always available, from day one when we get you onboarded, through monthly check-ins, and an end of year wrap-up. "Teachers at SIS consider observations, coaching, and feedback through iAspire as an opportunity to refine their skills to emerge as delightful teachers. Their efforts to make the lessons interesting and engaging is supported by the coaching through iAspire and give children joyful learning experience." ~ Dr. Nair, Principal "It allowed me to see other ways to help students learn… I just wish I had this information before school started to fully implement it! " ~ Andita, Teacher AMAZING RESULTS - Organizations like yours are seeing amazing results, including: An organization with 7-year high turnover dropped turnover by 36% in their first year of using iAspire - An organization increased number of observations by 456% in their first year of using iAspire - Organizations offer additional PD through iAspire's dynamic coaching which may count as PD hours for teacher license renewals - Organizations are automatically running cadences of recognition and seeking input from their team for the first time

Screenshots

Quick Correlation Coefficients3 screens
iAspire4 screens

Verdict

The call

The clearest difference is rating: iAspire at 5.0 against Quick Correlation Coefficients's 1.0. iAspire also leads on ratings volume (5 vs 1). Quick Correlation Coefficients's advantage is iOS requirement (12.3 vs 15.6). On price, update cadence, ads and in-app purchases 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. Neither carries in-app purchases, so what you see is what you pay.

ReceptionRating · Positive reviews · Number of ratings

iAspire holds the better App Store score, 5.0 against 1.0. That said, the two scores are not equally well evidenced: iAspire has 5 ratings behind it against 1, so its average is the more settled of the two.

UpkeepUpdate frequency

Quick Correlation Coefficients ships an update every 4 months, iAspire every 8 months. The most recent releases landed on October 24, 2026 and October 14, 2026 respectively.

Scorecard3 real differences · 7 level
Quick Correlation Coefficients versus iAspire: the parameters behind the verdict, then further details
ParameterQuick Correlation CoefficientsiAspire
PriceFreeFree
Rating1.0 (1 ratings)5.0 (5 ratings) — better
Positive reviews0.0% of reviews—
Number of ratings15 — better
Update frequencyEvery 4 months — betterEvery 8 months
AdsNoNo
In-app purchasesNoNo
MonetizationFreeFree
DevicesiPhone, iPodiPhone, iPad, iPod — better
Requires iOS12.3 — better15.6
Further details — not scored
Size1 MB1 MB
Age rating4+4+
DeveloperMSYappsDulead LLC

Customer experience

Quick Correlation Coefficients

All ratings1 ratings
Positive0.0%
Neutral0.0%
Negative100.0%
Written reviews2 reviews
Positive0.0%
Neutral0.0%
Negative100.0%

iAspire

All ratings5 ratings
Positive100.0%
Neutral0.0%
Negative0.0%

In-app purchases

None

Quick Correlation Coefficients

No in-app purchases

None

iAspire

No in-app purchases

Questions

Is Quick Correlation Coefficients free?
Quick Correlation Coefficients is free to download, with no in-app purchases.
Is iAspire free?
iAspire is free to download, with no in-app purchases.
Which has better reviews, Quick Correlation Coefficients or iAspire?
iAspire is rated higher. Quick Correlation Coefficients averages 1.0 out of 5 from 1 ratings, while iAspire averages 5.0 from 5 ratings.
Do Quick Correlation Coefficients or iAspire have ads?
Neither Quick Correlation Coefficients nor iAspire shows ads.
Which is updated more often, Quick Correlation Coefficients or iAspire?
Quick Correlation Coefficients ships an update every 4 months, and iAspire every 8 months. Most recently, Quick Correlation Coefficients was updated on October 24, 2026 and iAspire on October 14, 2026.

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