# Geometry Quick Reference vs Art of Stat

The clearest difference is price: Art of Stat at Free against Geometry Quick Reference's $0.99. Art of Stat also leads on update cadence (every 3 months vs every 37 months) and device support (3 vs 1). Geometry Quick Reference's advantage is in-app purchases (none vs 5) and iOS requirement (12.0 vs 15.1). On ads there is nothing between them.

Art of Stat is free to download; Geometry Quick Reference costs $0.99 up front. Art of Stat sells 5 one-off in-app purchases. Geometry Quick Reference asks for nothing beyond the download.

Geometry Quick Reference ships an update every 37 months, Art of Stat every 3 months. The most recent releases landed on October 26, 2026 and October 24, 2026 respectively.

## The numbers

| Metric | Geometry Quick Reference | Art of Stat |
| --- | --- | --- |
| Price | $0.99 | **Free** |
| Rating | — | **[4.7 (21 ratings)](https://appshunter.io/ios/app/art-of-stat-regression/id1613497223/reviews)** |
| Number of ratings | — | **21** |
| Positive reviews | — | 83.3% of reviews |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 37 months | **Every 3 months** |
| Monetization | — | Free |
| Size | 7 MB | 33 MB |
| Requires iOS | **12.0** | 15.1 |
| Devices | iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Ventura Educational Systems](https://appshunter.io/developer/371324172) | [Bernhard Klingenberg](https://appshunter.io/developer/1564877195) |

## What reviewers say

### Geometry Quick Reference

[App page](https://appshunter.io/ios/app/geometry-quick-reference/id706066085)

**Features:** macOS Compatibility

**In-app purchases:** none


### Art of Stat

[App page](https://appshunter.io/ios/app/art-of-stat-regression/id1613497223)

This app helps you analyze data by creating scatterplots and fitting various regression models. Visualize model parameters, confidence intervals, and predictions, and explore relationships with categorical variables.

**Highlights:** Scatterplots and regression model fitting, Inference for model parameters, Multiple linear and logistic regression, Confidence and prediction intervals, Categorical predictors and interactions, Residual analysis, Data import and example datasets

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

**In-app purchases (5)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Linear Regression | $0.99 | one-time |
| Exponential Regression | $0.99 | one-time |
| Logistic Regression | $0.99 | one-time |
| Multiple Linear Regression | $1.99 | one-time |
| Unlock All Content & Save | $3.99 | one-time |


## Frequently asked questions

### Is Geometry Quick Reference free?

Geometry Quick Reference costs $0.99, with no in-app purchases.

### Is Art of Stat free?

Art of Stat is free to download, with in-app purchases available.

### Do Geometry Quick Reference or Art of Stat have ads?

Neither Geometry Quick Reference nor Art of Stat shows ads.

### Which is updated more often, Geometry Quick Reference or Art of Stat?

Geometry Quick Reference ships an update every 37 months, and Art of Stat every 3 months. Most recently, Geometry Quick Reference was updated on October 26, 2026 and Art of Stat on October 24, 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.*