# The Mp3 Experiment vs Metrograph

The clearest difference is rating: Metrograph at 4.5 against The Mp3 Experiment's 3.8. Metrograph also leads on update cadence (every 4 months vs every 9 months) and review sentiment (90% vs 78%). The Mp3 Experiment's advantage is monetization model (free vs free with in-app purchases). On price, ratings volume, ads and in-app purchases there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

Metrograph holds the better App Store score, 4.5 against 3.8. Both are backed by a comparable volume of ratings — 12 and 30 respectively. Written reviews point the same way: 78% of The Mp3 Experiment's written reviews are positive against 90% of Metrograph's.

The Mp3 Experiment ships an update every 9 months, Metrograph every 4 months. The most recent releases landed on October 2, 2026 and September 20, 2026 respectively.

## The numbers

| Metric | The Mp3 Experiment | Metrograph |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [3.8 (12 ratings)](https://appshunter.io/ios/app/the-mp3-experiment/id537991205/reviews) | **[4.5 (30 ratings)](https://appshunter.io/ios/app/metrograph/id1555189692/reviews)** |
| Number of ratings | 12 | **30** |
| Positive reviews | 78.3% of reviews | **90.0% of reviews** |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 9 months | **Every 4 months** |
| Monetization | **Free** | Free with in-app purchases |
| Size | 39 MB | 68 MB |
| Requires iOS | **15.1** | 16.6 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, Apple TV |
| Age rating | 4+ | 17+ |
| Developer | [Improv Everywhere Productions, Inc.](https://appshunter.io/developer/1141107519) | [Metrograph](https://appshunter.io/developer/1728720207) |

## What reviewers say

### The Mp3 Experiment

[App page](https://appshunter.io/ios/app/the-mp3-experiment/id537991205)

This app synchronizes custom audio playback for participants in a live, participatory audio adventure. Users join an event, and the audio automatically plays in sync, guiding them through humorous, secret instructions in public spaces.

**Highlights:** Synchronized audio playback, Participatory audio adventures, Custom audio file synchronization, Automatic playback at event start, Live event guidance

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

**In-app purchases:** none


### Metrograph

[App page](https://appshunter.io/ios/app/metrograph/id1555189692)

Access a curated selection of films and exclusive series, including new releases and rediscoveries. Watch content from the cinema at home or on the go, and create your personal watchlist. Enjoy bonus content and interviews.

**Highlights:** Curated film library, Exclusive series, Streaming premieres, Bonus content and interviews, Watchlist creation, Offline viewing

**In-app purchases:** none


## Frequently asked questions

### Is The Mp3 Experiment free?

The Mp3 Experiment is free to download, with no in-app purchases.

### Is Metrograph free?

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

### Which has better reviews, The Mp3 Experiment or Metrograph?

Metrograph is rated higher. The Mp3 Experiment averages 3.8 out of 5 from 12 ratings, while Metrograph averages 4.5 from 30 ratings.

### Do The Mp3 Experiment or Metrograph have ads?

Neither The Mp3 Experiment nor Metrograph shows ads.

### Which is updated more often, The Mp3 Experiment or Metrograph?

The Mp3 Experiment ships an update every 9 months, and Metrograph every 4 months. Most recently, The Mp3 Experiment was updated on October 2, 2026 and Metrograph on September 20, 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.*