The Mp3 Experiment vs Metrograph
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
The Mp3 Experiment
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.
- Synchronized audio playback
- Participatory audio adventures
- Custom audio file synchronization
- Automatic playback at event start
- Live event guidance
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This app powers Improv Everywhere's Mp3 Experiment project. The app will synchronize playback of a custom audio file for all participants who have downloaded it and joined the event. Users simply need to have the app open at the event's start time, and the audio will automatically begin playing in sync. The Mp3 Experiment is a participatory audio adventure where attendees download an audio file and listen to synchronized secret instructions in a public space. Hilarity ensues as participants carry out ridiculous, synchronized instructions delivered to their headphones via narrator "Steve" and everyone else tries to figure out what in the world is going on. We stage a new Mp3 Experiment in New York each year and also tour the project to college campuses and festivals around the world. More information: http://mp3experiment.com/
Metrograph
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.
- Curated film library
- Exclusive series
- Streaming premieres
- Bonus content and interviews
- Watchlist creation
- Offline viewing
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Metrograph is the ultimate destination for movie lovers. From new releases to exciting rediscoveries, and exclusive series, Metrograph provides the best in curation, in theater and available on demand. Watch films and series screening exclusively at Metrograph’s cinemas from the comfort of your home or on the go on our new mobile app, or curate your own watchlist of films on the platform. FEATURES - The Metrograph Pictures library, plus limited engagements, curated collections, and titles hand selected by Metrograph’s programming team. - Films and series screening in Metrograph’s theaters and streaming exclusively on Metrograph At Home. - Streaming Premieres, original bonus content, interviews with your favorite directors, introductions from guest curators, and more. - Watch list and offline viewing. Terms of Service: https://watch.metrograph.com/tos Privacy Policy: https://watch.metrograph.com/privacy
Screenshots
Verdict
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.
Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS
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.
| Parameter | The Mp3 Experiment | Metrograph |
|---|---|---|
| Price | Free | Free |
| Rating | 3.8 (12 ratings) | 4.5 (30 ratings) — better |
| Positive reviews | 78.3% of reviews | 90.0% of reviews — better |
| Number of ratings | 12 | 30 — better |
| Update frequency | Every 9 months | Every 4 months — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free — better | Free with in-app purchases |
| Devices | iPhone, iPad, iPod | iPhone, iPad, Apple TV |
| Requires iOS | 15.1 — better | 16.6 |
| Further details — not scored | ||
| Size | 39 MB | 68 MB |
| Age rating | 4+ | 17+ |
| Developer | Improv Everywhere Productions, Inc. | Metrograph |
Customer experience
The Mp3 Experiment
Metrograph
In-app purchases
The Mp3 Experiment
No in-app purchases
Metrograph
No in-app purchases
Questions
Is The Mp3 Experiment free?
Is Metrograph free?
Which has better reviews, The Mp3 Experiment or Metrograph?
Do The Mp3 Experiment or Metrograph have ads?
Which is updated more often, The Mp3 Experiment or Metrograph?
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