# The Master Key System vs FRL

The clearest difference is review sentiment: FRL at 100% against The Master Key System's 25%. FRL also leads on rating (4.9 vs 3.3). The Master Key System's advantage is monetization model (free vs free with in-app purchases) and device support (3 vs 1). On price, ratings volume, ads and in-app purchases there is nothing between them.

Both are free to download. The Master Key System sells 1 one-off in-app purchase and FRL sells 3 in-app purchases, starting at $2.99 per 7 days. Whichever you choose, the download price is not the number that matters.

FRL holds the better App Store score, 4.9 against 3.3. Both are backed by a comparable volume of ratings — 7 and 18 respectively. Written reviews point the same way: 25% of The Master Key System's written reviews are positive against 100% of FRL's.

## The numbers

| Metric | The Master Key System | FRL |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [3.3 (7 ratings)](https://appshunter.io/ios/app/the-master-key-system-audio/id1380717052/reviews) | **[4.9 (18 ratings)](https://appshunter.io/ios/app/frl-anonymous-messages/id6740466306/reviews)** |
| Number of ratings | 7 | **18** |
| Positive reviews | 25.0% of reviews | **100.0% of reviews** |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | — | Weekly |
| Monetization | **Free** | Free with in-app purchases |
| Size | 49 MB | 26 MB |
| Requires iOS | **8.0** | 16.0 |
| Devices | **iPhone, iPad, iPod** | iPhone |
| Age rating | 4+ | 12+ |
| Developer | [Huong Nguyen](https://appshunter.io/developer/1342162705) | [BLVCK LLC](https://appshunter.io/developer/1792248192) |

## What reviewers say

### The Master Key System

[App page](https://appshunter.io/ios/app/the-master-key-system-audio/id1380717052)

This application provides an audio version of "The Master Key System," a personal development book focusing on New Thought principles. It features synchronized narration, allowing users to read and listen simultaneously, with exercises and Q&A sections for each chapter.

**Highlights:** Synchronized audio narration, Chapter exercises and Q&A, Adjustable font size and style, Night and day reading modes, Background audio playback, Text highlighting

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Unlock All | $0.99 | one-time |


### FRL

[App page](https://appshunter.io/ios/app/frl-anonymous-messages/id6740466306)

Receive anonymous messages, engage in interactive games, and share genuine moments with friends. This platform facilitates authentic conversations and honest feedback through a personalized link shared on social media.

**Highlights:** Anonymous messaging, Interactive games (truth or dare, this or that), Personalized FRL link, AI-powered message hints, Privacy controls and message filtering, Real-time notifications, Smart story responses

**Features:** macOS Compatibility

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Pro Weekly | $2.99 | per 7 days |
| Pro Monthly | $8.99 | per month |
| Pro Yearly | $24.99 | per year |


## Frequently asked questions

### Is The Master Key System free?

The Master Key System is free to download, with in-app purchases available.

### Is FRL free?

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

### Which has better reviews, The Master Key System or FRL?

FRL is rated higher. The Master Key System averages 3.3 out of 5 from 7 ratings, while FRL averages 4.9 from 18 ratings.

### Do The Master Key System or FRL have ads?

Neither The Master Key System nor FRL shows ads.

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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.*