B2B CROWD DUO
Two-DJ song battle party game
Only for iPhone
$2.99 · Designed for iPhone. Not verified for macOS.
iPhone
No mixing. The only thing that matters is what you play next.
B2B CROWD DUO is a song-selection game for two DJs. You take turns picking the next track and battle to push a virtual club crowd as high as it will go. Real songs come straight from Apple Music or Audius.
HOW IT WORKS
- While your partner's track plays, search for your next one and lock it in
- The moment it switches, the DJ throws a hand up and your track drops
- Crowd energy and combos turn into points
- Your partner hands out LIKEs and judges whether your pick fits the theme
WHO'S PLAYING
- 2 DJs, 1 iPhone: pass the phone back to back
- VS AUTO DJ: your rival picks by itself, following the current track and the rules
- Just play: set both to AUTO and enjoy an automatic DJ party
- 2 iPhones: link with a nearby iPhone and pick on your own phone (music plays from the host)
- On iPhone Duo, open it up and the screen splits so both DJs pick at once
8 MODES
Free B2B, Genre Battle, Theme Battle, DJ Shiritori (link the next song to the last), Secret Track, Time Attack, Survival (zero energy ends it), 100% Challenge
VENUES
Club, Forest Rave, Record Shop, Shibuya Street and a Cruise Deck, each with a live-action crowd that changes across six energy levels. Pick from 10 DJs, robots included.
ABOUT THE MUSIC
- Playing with Apple Music requires an Apple Music subscription
- Audius (free, no account needed) works too
- A silent DEMO mode lets you try the rules
- Audio is never analyzed, edited or saved. Energy comes from how fast you pick, official track info such as genre and release year, and crowd reactions
Japanese, English, Simplified and Traditional Chinese. No ads, no in-app purchases.
Ratings & Reviews
- This app hasn’t received enough ratings or reviews to display an overview.
The developer, satoshi amasaki, indicated that the app’s privacy practices may include handling of data as described below. For more information, see the developer’s privacy policy .
Data Not Collected
The developer does not collect any data from this app.
Accessibility
The developer has not yet indicated which accessibility features this app supports. Learn More
Information
- Seller
- satoshi amasaki
- Size
- 395.5 MB
- Category
- Music
- Compatibility
Requires iOS 17.0 or later.
- iPhone
Requires iOS 17.0 or later. - Mac
Requires macOS 14.0 or later and a Mac with Apple M1 chip or later. - Apple Vision
Requires visionOS 1.0 or later.
- iPhone
- Languages
English and 3 more
- English, Japanese, Simplified Chinese, Traditional Chinese
- Age Rating
4+
- 4+
- Copyright
- © 2026 tokyonasu
