# Quick Correlation Coefficients vs Graphing Calculator X84

The clearest difference is rating: Graphing Calculator X84 at 4.5 against Quick Correlation Coefficients's 1.0. Graphing Calculator X84 also leads on review sentiment (38% vs 0%) and ratings volume (50K vs 1). Quick Correlation Coefficients's advantage is in-app purchases (none vs 1) and ads (none vs shown). On price, update cadence, device support and iOS requirement there is nothing between them.

Both are free to download. Graphing Calculator X84 sells 1 one-off in-app purchase. Quick Correlation Coefficients asks for nothing beyond the download.

Graphing Calculator X84 holds the better App Store score, 4.5 against 1.0. That said, the two scores are not equally well evidenced: Graphing Calculator X84 has 50K 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 38% of Graphing Calculator X84's.

Quick Correlation Coefficients ships an update every 4 months, Graphing Calculator X84 every 3 months. The most recent releases landed on November 6, 2026 and November 7, 2026 respectively.

## The numbers

| Metric | Quick Correlation Coefficients | Graphing Calculator X84 |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [1.0 (1 ratings)](https://appshunter.io/ios/app/quick-correlation-coefficients/id478355922/reviews) | **[4.5 (50K ratings)](https://appshunter.io/ios/app/graphing-calculator-x84/id1247828717/reviews)** |
| Number of ratings | 1 | **50K** |
| Positive reviews | 0.0% of reviews | **38.3% of reviews** |
| In-app purchases | **No** | Yes |
| Ads | **No** | Yes |
| Update frequency | Every 4 months | **Every 3 months** |
| Monetization | **Free** | Free with in-app purchases |
| Size | 1 MB | 23 MB |
| Requires iOS | 12.3 | **12.1** |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [MSYapps](https://appshunter.io/developer/458482419) | [Incpt.Mobis](https://appshunter.io/developer/445261166) |

## 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


### Graphing Calculator X84

[App page](https://appshunter.io/ios/app/graphing-calculator-x84/id1247828717)

This app offers a free, powerful alternative to hardware graphing calculators. It supports basic to complex math, including graphing, statistics, and matrix operations, with a built-in user manual for assistance.

**Highlights:** Graphing of functions, Statistics and regression analysis, Matrix operations, Equation and polynomial solver, Integral and derivative calculation, Mathematical display

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| PRO Upgrade | $5.99 | one-time |

**What reviewers like**

- 🚀 Exact replica of TI-84 calculator
- 🤩 Great for school/college math
- 👍 Convenient to have on phone
- 💰 Cheaper than physical calculator

**What reviewers complain about**

- 📺 Intrusive and frequent ads
- 🔓 Key features locked behind paywall
- 🛑 Restricted functionality compared to physical TI-84
- 🤯 Ads disrupt focus during timed tests

**Reported bugs**

- Calculation errors on basic functions
- Graphing and programming features not working as expected
- Frequent crashes and freezes

**Requested features**

- Option to pay and remove ads
- More customization options
- Haptic feedback when pressing buttons
- Better integration with physical TI-84 calculators


## Frequently asked questions

### Is Quick Correlation Coefficients free?

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

### Is Graphing Calculator X84 free?

Graphing Calculator X84 is free to download, with in-app purchases available.

### Which has better reviews, Quick Correlation Coefficients or Graphing Calculator X84?

Graphing Calculator X84 is rated higher. Quick Correlation Coefficients averages 1.0 out of 5 from 1 ratings, while Graphing Calculator X84 averages 4.5 from 50K ratings.

### Do Quick Correlation Coefficients or Graphing Calculator X84 have ads?

Graphing Calculator X84 shows ads; Quick Correlation Coefficients does not.

### Which is updated more often, Quick Correlation Coefficients or Graphing Calculator X84?

Quick Correlation Coefficients ships an update every 4 months, and Graphing Calculator X84 every 3 months. Most recently, Quick Correlation Coefficients was updated on November 6, 2026 and Graphing Calculator X84 on November 7, 2026.

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