The Mp3 Experiment vs TrackJames
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/
TrackJames
Locate individuals by guiding them to your position or allowing them to find you. This application facilitates easy tracking and connection with specific people.
- Locate specific individuals
- Guide others to your location
- Allow others to find you
- Facilitates connection
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This app will lead you right to James or anyone. You can also have others be lead to you.
Screenshots
Verdict
The clearest difference is rating: TrackJames at 5.0 against The Mp3 Experiment's 3.8. TrackJames also leads on update cadence (every 4 weeks vs every 9 months). 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.
TrackJames 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.
The Mp3 Experiment ships an update every 9 months, TrackJames every 4 weeks. The most recent releases landed on October 23, 2026 and October 20, 2026 respectively.
| Parameter | The Mp3 Experiment | TrackJames |
|---|---|---|
| Price | Free | Free |
| Rating | 3.8 (12 ratings) | 5.0 (2 ratings) — better |
| Positive reviews | 78.3% of reviews | — |
| Number of ratings | 12 — better | 2 |
| Update frequency | Every 9 months | Every 4 weeks — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free | Free |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 15.1 | 15.1 |
| Further details — not scored | ||
| Size | 39 MB | 26 MB |
| Age rating | 4+ | 4+ |
| Developer | Improv Everywhere Productions, Inc. | Mr Stonemountain, LLC |
In-app purchases
The Mp3 Experiment
No in-app purchases
TrackJames
No in-app purchases
Questions
Is The Mp3 Experiment free?
Is TrackJames free?
Which has better reviews, The Mp3 Experiment or TrackJames?
Do The Mp3 Experiment or TrackJames have ads?
Which is updated more often, The Mp3 Experiment or TrackJames?
Other comparisons
