# STA Methods vs Art of Stat

The clearest difference is in-app purchases: STA Methods at none against Art of Stat's 12. STA Methods also leads on iOS requirement (13.0 vs 15.1). Art of Stat's advantage is ratings volume (20 vs 1). On price, rating, update cadence and ads there is nothing between them.

Both are free to download. Art of Stat sells 12 one-off in-app purchases. STA Methods asks for nothing beyond the download.

On the App Store both sit at effectively the same score — 5.0 for STA Methods against 5.0 for Art of Stat. That said, the two scores are not equally well evidenced: Art of Stat has 20 ratings behind it against 1, so its average is the more settled of the two.

STA Methods ships an update every 4 months, Art of Stat every 6 months. The most recent releases landed on October 18, 2026 and October 24, 2026 respectively.

## The numbers

| Metric | STA Methods | Art of Stat |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (1 ratings)](https://appshunter.io/ios/app/sta-methods/id657466046/reviews)** | [5.0 (20 ratings)](https://appshunter.io/ios/app/art-of-stat-inference/id1578438712/reviews) |
| Number of ratings | 1 | **20** |
| Positive reviews | — | 100.0% of reviews |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | **Every 4 months** | Every 6 months |
| Monetization | **Free** | Free with in-app purchases |
| Size | 5 MB | 33 MB |
| Requires iOS | **13.0** | 15.1 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Spade Apps, LLC](https://appshunter.io/developer/532346089) | [Bernhard Klingenberg](https://appshunter.io/developer/1564877195) |

## What reviewers say

### STA Methods

[App page](https://appshunter.io/ios/app/sta-methods/id657466046)

This app helps college statistics students by providing essential formulas and symbols for homework and study. It also includes a dedicated section for taking notes during class or for later review.

**Highlights:** Key statistics formulas, Essential symbols reference, In-app notes section, Study aid for college statistics, Homework assistance

**Features:** macOS Compatibility

**In-app purchases:** none


### Art of Stat

[App page](https://appshunter.io/ios/app/art-of-stat-inference/id1578438712)

This app is a statistical calculator for performing confidence intervals and hypothesis tests on proportions and means. It offers various tests including z-tests, t-tests, McNemar's test, and ANOVA, with clear visualizations of results and P-values. It also includes a data editor and works offline.

**Highlights:** Inference for proportions (z-test, two sample z-test, McNemar), Inference for means (t-test, two-sample t-test, paired t-test, ANOVA), Chi-Square tests (Goodness of Fit, Independence), Data editor for creating, editing, and importing datasets, Visualizations of confidence intervals and P-values, Offline mode for exam use, Result sharing via screenshots

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

**In-app purchases (12)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Inference for a Mean | $0.99 | one-time |
| Coverage for Intervals | $0.99 | one-time |
| Errors & Power | $0.99 | one-time |
| Inference for Two Proportions | $0.99 | one-time |
| Inference for Two Means | $0.99 | one-time |
| ANOVA: Comparing Means | $0.99 | one-time |
| Chi-Square Test (Independence) | $0.99 | one-time |
| Two Quantitative Variables | $0.99 | one-time |
| Chi-Square Test (GoF) | $0.99 | one-time |
| Two Dependent Means | $0.99 | one-time |
| Two Dependent Proportions | $0.99 | one-time |
| Unlock All Apps | $3.99 | one-time |


## Frequently asked questions

### Is STA Methods free?

STA Methods is free to download, with no in-app purchases.

### Is Art of Stat free?

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

### Which has better reviews, STA Methods or Art of Stat?

STA Methods is rated higher. STA Methods averages 5.0 out of 5 from 1 ratings, while Art of Stat averages 5.0 from 20 ratings.

### Do STA Methods or Art of Stat have ads?

Neither STA Methods nor Art of Stat shows ads.

### Which is updated more often, STA Methods or Art of Stat?

STA Methods ships an update every 4 months, and Art of Stat every 6 months. Most recently, STA Methods was updated on October 18, 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.*