The Mp3 Experiment vs Rumor
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
Read full descriptionHide 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/
Rumor
This app connects users to exclusive cultural experiences like art, fashion, and music events. It allows members to discover and receive invites to coveted moments, manage RSVPs, and connect directly with event hosts. Hosts can create event pages, manage invitations, and track guest engagement.
- Access exclusive cultural experiences
- Discover and receive event invites
- Filter events by category and location
- Connect directly with event hosts
- Manage RSVPs and passes
- Create and manage event pages
- Track event engagement
Read full descriptionHide full description
Rumor: Invites That Matter Rumor is a private network connecting the people and experiences that shape culture. MEMBERS: ACCESS CULTURE’S MOST COVETED MOMENTS Leverage your network to unlock exclusive experiences across art, fashion, music, and beyond. TAILORED JUST FOR YOU Filter events by category, location, and more—whether it’s an after-party, brand experience, or private dinner. LET INVITES COME TO YOU Get discovered by hosts and receive invites to culture’s most sought-after events. CONNECT DIRECTLY WITH HOSTS Build relationships and secure invites from those who run the show. No more barriers. NEVER MISS A MOMENT Track all your invites, RSVPs, and passes in one place. HOW TO JOIN Prospective members can download the app and submit an application. Applications are reviewed continuously, and accepted members receive full access. HOSTS: EVENT PAGES Create screenshot-protected event pages for the Rumor community or publish public forms to reach a wider audience. INVITE MANAGEMENT Customize invitations and request social deliverables in exchange for access. GUEST CONTROL CENTER Manage RSVPs, chat, and check in guests from any device. COLLABORATOR MANAGEMENT Set custom permissions, centralize guest lists, and allocate tickets seamlessly. EVENT INSIGHTS Track engagement and real-time data to refine and grow your community. Interested in becoming a host on Rumor? If you host exclusive events or experiences, apply at TheRumor.com or contact support@therumor.com to learn more about our powerful tools for inviting, managing, and leveraging influential guests.
Screenshots
Verdict
The clearest difference is update cadence: Rumor at every 5 days against The Mp3 Experiment's every 9 months. Rumor also leads on ratings volume (53 vs 12). The Mp3 Experiment's advantage is rating (3.8 vs 3.5). On price, review sentiment, 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.
The Mp3 Experiment holds the better App Store score, 3.8 against 3.5. Both are backed by a comparable volume of ratings — 12 and 53 respectively. Written reviews point the same way: 78% of The Mp3 Experiment's written reviews are positive against 73% of Rumor's.
The Mp3 Experiment ships an update every 9 months, Rumor every 5 days. The most recent releases landed on November 1, 2026 and November 5, 2026 respectively.
| Parameter | The Mp3 Experiment | Rumor |
|---|---|---|
| Price | Free | Free |
| Rating | 3.8 (12 ratings) — better | 3.5 (53 ratings) |
| Positive reviews | 78.3% of reviews — better | 72.5% of reviews |
| Number of ratings | 12 | 53 — better |
| 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, iPad |
| Requires iOS | 15.1 — better | 16.4 |
| Further details — not scored | ||
| Size | 39 MB | 145 MB |
| Age rating | 4+ | 17+ |
| Developer | Improv Everywhere Productions, Inc. | rumor |
Customer experience
The Mp3 Experiment
Rumor
In-app purchases
The Mp3 Experiment
No in-app purchases
Rumor
No in-app purchases
Questions
Is The Mp3 Experiment free?
Is Rumor free?
Which has better reviews, The Mp3 Experiment or Rumor?
Do The Mp3 Experiment or Rumor have ads?
Which is updated more often, The Mp3 Experiment or Rumor?
Other comparisons















