The Mp3 Experiment vs BROAD/CAST
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/
BROAD/CAST
Experience live performances with synchronized audio streamed directly to your phone. Enjoy a shared listening experience with millisecond-perfect sync, adapting to your location within the venue. This app is designed exclusively for scheduled live events at participating locations.
- Millisecond-accurate audio synchronization
- Automatic venue check-in
- Bluetooth headphone compatibility
- Offline-tolerant audio buffering
- Battery-efficient design
- Customizable audience mixes
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Broadcast is a synchronized live-performance audio platform. When you arrive at a participating performance, scan the venue's QR code, install and open the app, and the show's audio streams to your phone in millisecond-perfect sync with everyone else's device. Different audience members may hear different mixes depending on where they are or which section they're in, creating a shared listening experience that adapts to each listener. Broadcast is not a music streaming service or on-demand player. It only works during scheduled live performances at participating venues. When no show is active, the app is idle. FEATURES • Millisecond-accurate synchronization across every connected phone — audio plays in lock-step whether you're standing next to another audience member or across the venue. • Automatic venue check — the app confirms you're at the performance before joining. • Bluetooth headphone compatibility with automatic latency compensation so wireless headphones stay in sync with everyone else. • Offline-tolerant — brief WiFi interruptions don't break your audio; the app buffers and recovers gracefully. • Battery-friendly — designed to run for the length of a full performance. HOW IT WORKS 1. Arrive at a participating performance. 2. Scan the venue QR code and install Broadcast. 3. Open the app; it confirms you're at the venue and downloads the show's audio. 4. When the performance begins, audio plays automatically in sync with everyone else's phone. 5. When the show ends, the app returns to idle. ABOUT Broadcast is developed by Point A Works LLC in Brooklyn, NY, for live performances and events. It replaces traditional wireless in-ear-monitor systems used in theatre and live production, giving performers unlimited range and directors creative routing flexibility that no traditional radio system can match. Broadcast is optimized for headphones — Bluetooth, wired, or over-ear.
Screenshots
Verdict
The clearest difference is rating: BROAD/CAST at 5.0 against The Mp3 Experiment's 3.8. BROAD/CAST also leads on update cadence (every 5 days vs every 9 months) and review sentiment (100% vs 78%). The Mp3 Experiment's advantage is ratings volume (12 vs 2). On price, ads, in-app purchases and monetization model 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.
BROAD/CAST holds the better App Store score, 5.0 against 3.8. That said, the two scores are not equally well evidenced: The Mp3 Experiment has 12 ratings behind it against 2, so its average is the more settled of the two. Written reviews point the same way: 78% of The Mp3 Experiment's written reviews are positive against 100% of BROAD/CAST's.
The Mp3 Experiment ships an update every 9 months, BROAD/CAST every 5 days. The most recent releases landed on November 1, 2026 and October 31, 2026 respectively.
| Parameter | The Mp3 Experiment | BROAD/CAST |
|---|---|---|
| Price | Free | Free |
| Rating | 3.8 (12 ratings) | 5.0 (2 ratings) — better |
| Positive reviews | 78.3% of reviews | 100.0% of reviews — better |
| Number of ratings | 12 — better | 2 |
| Update frequency | Every 9 months | Every 5 days — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free | Free |
| Devices | iPhone, iPad, iPod — better | iPhone, iPod |
| Requires iOS | 15.1 | 15.1 |
| Further details — not scored | ||
| Size | 39 MB | 35 MB |
| Age rating | 4+ | 9+ |
| Developer | Improv Everywhere Productions, Inc. | POINT.A |
Customer experience
The Mp3 Experiment
BROAD/CAST
In-app purchases
The Mp3 Experiment
No in-app purchases
BROAD/CAST
No in-app purchases
Questions
Is The Mp3 Experiment free?
Is BROAD/CAST free?
Which has better reviews, The Mp3 Experiment or BROAD/CAST?
Do The Mp3 Experiment or BROAD/CAST have ads?
Which is updated more often, The Mp3 Experiment or BROAD/CAST?
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