B2Gaudio
Turn every phone in the room into one synced speaker
Details
- External ID
- 1254217
- Source
- PH
- Company
- —
- Product
- B2Gaudio
- Website domain
- producthunt.com
- Launched
- Sept. 22, 2026
- Cohort
- —
- Upvotes
- 1
- Upvotes percentile
- 0.30815693820825313
- Tags
- Music, Travel
- Fetched at
- Sept. 23, 2026, 1:01 a.m.
- Updated at
- Sept. 23, 2026, 1:01 a.m.
Description
B2Gaudio syncs audio and video across every iPhone in the room over WiFi — no Bluetooth, no cable, no account. One phone hosts, everyone else taps join, and it all plays as one. Music, podcasts, public-domain audiobooks and local video. With no network at all it falls back to Apple's peer-to-peer radio, so it works in a car. Free, no tracking.
Enrichment
- Theme
- cross-device control and OS utilities
- Vertical
- Media & entertainment
- Function
- Hardware & robotics
- Audience
- B2C
- AI stance
- Not AI
- Project type
- Commercial product
- Normalized one-liner
- synchronized multi-phone speaker system for group listening
- Manually corrected
- False
Could you build this?
Partial A basic peer-to-peer mobile app is vibe-codeable, but achieving sub-millisecond synchronized audio playback across multiple physical devices over Wi-Fi and peer-to-peer radios requires low-level audio engineering.
What it would actually take: The application requires an iOS Swift implementation using low-level CoreAudio, MultipeerConnectivity, and Network.framework. Clock synchronization across devices requires implementing custom NTP or PTP (Precision Time Protocol) algorithms to compensate for Wi-Fi jitter and hardware DAC latency down to single-digit milliseconds. Tuning real-time audio synchronization without audible echo or phase cancellation requires specialized DSP and networking knowledge.
Competitors
Other products that read as similar to this one — 269 launches clear the similarity bar, closest 8 shown.
Attention rank: #145 of 270 (itself plus its competitors, highest first — normalized so YC and Product Hunt are compared fairly).
Launched 298 days after the earliest competitor.
- Music Remote Control · ph · 2026-09-16 · 2 upvotes · similarity 0.51
- OVO · ph · 2026-09-14 · 75 upvotes · similarity 0.51
- SoundLatch · ph · 2026-09-17 · 2 upvotes · similarity 0.47
- Bluedot 2.1 · ph · 2026-05-27 · 373 upvotes · similarity 0.47
- Love Taps · ph · 2026-09-11 · 1 upvotes · similarity 0.47
- FOUR NOW · ph · 2026-09-16 · 1 upvotes · similarity 0.46
- Link Now · ph · 2026-09-13 · 2 upvotes · similarity 0.46
- Voice Recorder: Tapedeck · ph · 2026-09-22 · 2 upvotes · similarity 0.46
Other launches for this product
- No other launches for this product.
Same idea, different domain
Nobody's really built a hardware & robotics tool for Horizontal yet.