# Quick Correlation Coefficients vs WellNoted

The clearest difference is review sentiment: WellNoted at 100% against Quick Correlation Coefficients's 0%. WellNoted also leads on rating (4.4 vs 1.0) and update cadence (daily vs every 4 months). Quick Correlation Coefficients's advantage is in-app purchases (none vs 3) and iOS requirement (12.3 vs 17.2). On price, ads and device support there is nothing between them.

Both are free to download. WellNoted sells 3 in-app purchases, starting at $6.99 per 7 days. Quick Correlation Coefficients asks for nothing beyond the download.

WellNoted holds the better App Store score, 4.4 against 1.0. That said, the two scores are not equally well evidenced: WellNoted has 5 ratings behind it against 1, so its average is the more settled of the two. Written reviews point the same way: 0% of Quick Correlation Coefficients's written reviews are positive against 100% of WellNoted's.

Quick Correlation Coefficients ships an update every 4 months, WellNoted daily. Both last shipped on October 24, 2026.

## The numbers

| Metric | Quick Correlation Coefficients | WellNoted |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [1.0 (1 ratings)](https://appshunter.io/ios/app/quick-correlation-coefficients/id478355922/reviews) | **[4.4 (5 ratings)](https://appshunter.io/ios/app/wellnoted-ai-lecture-recorder/id6741928766/reviews)** |
| Number of ratings | 1 | **5** |
| Positive reviews | 0.0% of reviews | **100.0% of reviews** |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 4 months | **Daily** |
| Monetization | **Free** | Free with in-app purchases |
| Size | 1 MB | 46 MB |
| Requires iOS | **12.3** | 17.2 |
| Devices | iPhone, iPod | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [MSYapps](https://appshunter.io/developer/458482419) | [Lunar Apps](https://appshunter.io/developer/1796243791) |

## What reviewers say

### Quick Correlation Coefficients

[App page](https://appshunter.io/ios/app/quick-correlation-coefficients/id478355922)

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:** macOS Compatibility, Vision Pro support

**In-app purchases:** none


### WellNoted

[App page](https://appshunter.io/ios/app/wellnoted-ai-lecture-recorder/id6741928766)

This AI-powered assistant transforms lectures, meetings, and documents into concise summaries, interactive quizzes, and flashcards. It supports multiple input formats and helps users learn and retain information more efficiently.

**Highlights:** AI-generated summaries, Interactive flashcards and quizzes, Audio summaries for on-the-go learning, Multi-source content support (audio, text, links), Smart note organization and enhancement

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Premium Access | $6.99 | per 7 days |
| Premium Access | $49.99 | per year |
| Premium Access | $89.99 | per year |


## Frequently asked questions

### Is Quick Correlation Coefficients free?

Quick Correlation Coefficients is free to download, with no in-app purchases.

### Is WellNoted free?

WellNoted is free to download, with in-app purchases available.

### Which has better reviews, Quick Correlation Coefficients or WellNoted?

WellNoted is rated higher. Quick Correlation Coefficients averages 1.0 out of 5 from 1 ratings, while WellNoted averages 4.4 from 5 ratings.

### Do Quick Correlation Coefficients or WellNoted have ads?

Neither Quick Correlation Coefficients nor WellNoted shows ads.

### Which is updated more often, Quick Correlation Coefficients or WellNoted?

Quick Correlation Coefficients ships an update every 4 months, and WellNoted daily. Most recently, Quick Correlation Coefficients was updated on October 24, 2026 and WellNoted on October 24, 2026.

---

*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*