# Fundamentals App vs Vagus Master

The clearest difference is in-app purchases: Fundamentals App at none against Vagus Master's 1. Fundamentals App also leads on iOS requirement (13.0 vs 16.6). Vagus Master's advantage is update cadence (every 4 days vs every 3 months). On price, ads and device support there is nothing between them.

Both are free to download. Vagus Master sells 1 in-app purchase, starting at $2.99 per month. Fundamentals App asks for nothing beyond the download.

Fundamentals App ships an update every 3 months, Vagus Master every 4 days. The most recent releases landed on September 29, 2026 and October 9, 2026 respectively.

## The numbers

| Metric | Fundamentals App | Vagus Master |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 3 months | **Every 4 days** |
| Size | 189 MB | 1.3 GB |
| Requires iOS | **13.0** | 16.6 |
| Devices | iPhone, iPod | iPhone, iPad |
| Age rating | 12+ | 4+ |
| Developer | [Fundamentals Haarlem B.V.](https://appshunter.io/developer/1572406536) | [Niels Hoogenstrijd](https://appshunter.io/developer/1804106600) |

## What reviewers say

### Fundamentals App

[App page](https://appshunter.io/ios/app/fundamentals-app/id6749531651)

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

**In-app purchases:** none


### Vagus Master

[App page](https://appshunter.io/ios/app/vagus-master/id6755954792)

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Vagus Master Premium | $2.99 | per month |


## Frequently asked questions

### Is Fundamentals App free?

Fundamentals App is free to download, with no in-app purchases.

### Is Vagus Master free?

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

### Do Fundamentals App or Vagus Master have ads?

Neither Fundamentals App nor Vagus Master shows ads.

### Which is updated more often, Fundamentals App or Vagus Master?

Fundamentals App ships an update every 3 months, and Vagus Master every 4 days. Most recently, Fundamentals App was updated on September 29, 2026 and Vagus Master on October 9, 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.*