Comparison

The Mp3 Experiment vs BROAD/CAST

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

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.

Highlights
  • Synchronized audio playback
  • Participatory audio adventures
  • Custom audio file synchronization
  • Automatic playback at event start
  • Live event guidance
Features
Read full description

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/

About

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.

Highlights
  • Millisecond-accurate audio synchronization
  • Automatic venue check-in
  • Bluetooth headphone compatibility
  • Offline-tolerant audio buffering
  • Battery-efficient design
  • Customizable audience mixes
Read full description

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

The Mp3 Experiment3 screens
BROAD/CAST4 screens

Verdict

The call

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

CostPrice · In-app purchases · Ads · Monetization

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

ReceptionRating · Positive reviews · Number of ratings

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.

UpkeepUpdate frequency

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.

Scorecard4 real differences · 6 level
The Mp3 Experiment versus BROAD/CAST: the parameters behind the verdict, then further details
ParameterThe Mp3 ExperimentBROAD/CAST
PriceFreeFree
Rating3.8 (12 ratings)5.0 (2 ratings) — better
Positive reviews78.3% of reviews100.0% of reviews — better
Number of ratings12 — better2
Update frequencyEvery 9 monthsEvery 5 days — better
AdsNoNo
In-app purchasesNoNo
MonetizationFreeFree
DevicesiPhone, iPad, iPod — betteriPhone, iPod
Requires iOS15.115.1
Further details — not scored
Size39 MB35 MB
Age rating4+9+
DeveloperImprov Everywhere Productions, Inc.POINT.A

Customer experience

The Mp3 Experiment

All ratings12 ratings
Positive66.7%
Neutral0.0%
Negative33.3%
Written reviews23 reviews
Positive78.3%
Neutral4.3%
Negative17.4%

BROAD/CAST

All ratings2 ratings
Positive100.0%
Neutral0.0%
Negative0.0%
Written reviews1 reviews
Positive100.0%
Neutral0.0%
Negative0.0%

In-app purchases

None

The Mp3 Experiment

No in-app purchases

None

BROAD/CAST

No in-app purchases

Questions

Is The Mp3 Experiment free?
The Mp3 Experiment is free to download, with no in-app purchases.
Is BROAD/CAST free?
BROAD/CAST is free to download, with no in-app purchases.
Which has better reviews, The Mp3 Experiment or BROAD/CAST?
BROAD/CAST is rated higher. The Mp3 Experiment averages 3.8 out of 5 from 12 ratings, while BROAD/CAST averages 5.0 from 2 ratings.
Do The Mp3 Experiment or BROAD/CAST have ads?
Neither The Mp3 Experiment nor BROAD/CAST shows ads.
Which is updated more often, The Mp3 Experiment or BROAD/CAST?
The Mp3 Experiment ships an update every 9 months, and BROAD/CAST every 5 days. Most recently, The Mp3 Experiment was updated on November 1, 2026 and BROAD/CAST on October 31, 2026.

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