# Learn Statistics Guide vs GetPrincipia

The clearest difference is price: GetPrincipia at Free against Learn Statistics Guide's $1.99. GetPrincipia also leads on update cadence (every 2 months vs every 15 months). Learn Statistics Guide's advantage is in-app purchases (none vs 2) and iOS requirement (13.0 vs 15.1). On ads and device support there is nothing between them.

GetPrincipia is free to download; Learn Statistics Guide costs $1.99 up front. GetPrincipia sells 2 in-app purchases, starting at $6.99 per month. Learn Statistics Guide asks for nothing beyond the download.

Learn Statistics Guide ships an update every 15 months, GetPrincipia every 2 months. The most recent releases landed on September 15, 2026 and September 14, 2026 respectively.

## The numbers

| Metric | Learn Statistics Guide | GetPrincipia |
| --- | --- | --- |
| Price | $1.99 | **Free** |
| Positive reviews | 0.0% of reviews | — |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 15 months | **Every 2 months** |
| Monetization | Paid | — |
| Size | 40 MB | 38 MB |
| Requires iOS | **13.0** | 15.1 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Muhammad Umair](https://appshunter.io/developer/1696049320) | [Axiom 38 LLC](https://appshunter.io/developer/1887968723) |

## What reviewers say

### Learn Statistics Guide

[App page](https://appshunter.io/ios/app/learn-statistics-guide/id6452119320)

This app provides a comprehensive guide to understanding statistics, covering fundamental concepts like probability, regression, and sampling. It offers tutorials and explanations to help users learn statistical methods and their applications across various scientific and business fields.

**Highlights:** Introduction to Statistics, Probability, Hypothesis Testing, Linear Regression, Sampling Techniques, Correlation Analysis, Variable Types

**Features:** macOS Compatibility

**In-app purchases:** none


### GetPrincipia

[App page](https://appshunter.io/ios/app/getprincipia/id6761139348)

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Monthly | $6.99 | per month |
| Annual | $44.99 | per year |


## Frequently asked questions

### Is Learn Statistics Guide free?

Learn Statistics Guide costs $1.99, with no in-app purchases.

### Is GetPrincipia free?

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

### Do Learn Statistics Guide or GetPrincipia have ads?

Neither Learn Statistics Guide nor GetPrincipia shows ads.

### Which is updated more often, Learn Statistics Guide or GetPrincipia?

Learn Statistics Guide ships an update every 15 months, and GetPrincipia every 2 months. Most recently, Learn Statistics Guide was updated on September 15, 2026 and GetPrincipia on September 14, 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.*