Windows 10 & 11

One Screen.
Every Earbud.
Perfectly in Sync.

Stream your laptop audio to multiple Bluetooth and wired devices at the same time — with per-device volume, delay control, and adaptive drift correction that keeps hours-long sessions perfectly aligned.

Download Free Trial Buy — $10.99

No drivers needed · No admin rights · 30-day full trial

IN SYNC
0
Devices at Once
0
Sync Drift
0
Drivers Needed
0
Free Trial
Who It's For

Share Audio, Not Earbuds

SynchCast was built for the moments when one pair of earbuds just isn't enough.

Couples on the Go

Watching a movie on a train or bus? Each of you connects your own Bluetooth earbuds to the laptop — no sharing, no ambient noise, perfectly synced audio.

Travel · Flights · Commute

Hostel Movie Nights

Plan a movie night without disturbing your roommate — every friend connects their own headphones to one laptop screen. No speaker needed, no one gets bothered.

Dorms · Shared Rooms · Late Nights

Multi-Speaker Parties

Connect multiple Bluetooth speakers around the room and fill every corner with perfectly synchronized music — all from one laptop.

Parties · BBQs · Outdoor
How It Works

Up and Running in 60 Seconds

No drivers, no configuration files, no technical knowledge needed.

1

Install

Download and run the installer. No admin rights needed — it works right out of the box.

2

Select Devices

Toggle on the Bluetooth earbuds, speakers, or wired devices you want to broadcast to.

3

Hit Play

Press Start Broadcasting — your music, movies, or calls now play on every selected device in perfect sync.

Features

Everything You Need, Nothing You Don't

Professional audio broadcasting without the professional complexity.

Multi-Device Broadcast

Mirror system audio to any number of output devices — Bluetooth speakers, HDMI monitors, wired headphones, USB DACs — all at once.

Per-Device Volume

Independent volume slider for each connected device. Give the speaker full blast while keeping earbuds at 30% — your call.

Adaptive Drift Correction

A PI-controlled resampler cancels clock drift between devices. Watch a 3-hour movie and every device stays perfectly aligned.

Hot-Plug Detection

Pair a new Bluetooth device mid-session and it appears automatically. No restart needed — just toggle it on and keep listening.

No Drivers Required

Pure WASAPI loopback — no Virtual Audio Cable, no kernel drivers, no admin rights. Zero risk, zero hassle.

System Tray Operation

Minimize to tray and broadcast in the background. SynchCast stays out of your way while keeping all devices in sync.

The App

Beautiful Interface, Zero Learning Curve

Toggle devices on, adjust volume, hit broadcast. That's it.

SynchCast v2
SynchCast SynchCast
Broadcasting
Laptop Speakers (Realtek) 48 kHz · Vol 80% · Default
AirPods Pro (Bluetooth) 48 kHz · Vol 100% · +100ms
Sony WH-1000XM5 (Bluetooth) 48 kHz · Vol 90% · +100ms
JBL Flip 6 (Bluetooth) 48 kHz · Disabled
Stop Broadcasting
Live VU Meters
Real-time peak-hold level meters at ~30 Hz for every device
Delay Offset Control
0–500ms per-device delay to align Bluetooth with wired devices
Auto Bluetooth Comp.
Wired devices auto-compensate +100ms when Bluetooth connects
Pricing

One Price. Forever Yours.

No subscriptions. No hidden fees. Buy once, use forever.

Most Popular

Lifetime License

Full access to every feature, forever

$ 10 .99 / one-time
Start with 30 days free — no card needed
  • Unlimited devices simultaneously
  • Per-device volume & delay control
  • Adaptive drift correction
  • Hot-plug device detection
  • Activate on 1 machine
  • Free updates for life
Buy Now — $10.99 Download Free Trial

Secure checkout via Lemon Squeezy · Instant delivery

How activation works: After purchase, you'll receive your license key by email. Paste it into SynchCast → Settings → License to activate.
FAQ

Frequently Asked Questions

Everything you need to know before you download.

SynchCast runs on Windows 10 and Windows 11. It uses the WASAPI loopback API which is a Windows-exclusive feature, so macOS and Linux are not supported at this time.

No. SynchCast uses Windows' built-in WASAPI loopback — no Virtual Audio Cable, no kernel drivers, no admin rights needed. Just install and run.

There's no hard limit — SynchCast can broadcast to as many output devices as your system can handle. Each device gets its own dedicated render thread. In practice, most users connect 2–5 devices simultaneously.

No. SynchCast uses adaptive drift correction with a PI-controlled resampler that continuously compensates for the different clock speeds of each audio device. You can run a 3-hour movie and every device stays perfectly aligned — guaranteed.

During the trial you get every feature unlocked with no limitations. After 30 days, you'll need to purchase a lifetime license ($10.99 one-time) to continue using SynchCast. No subscription — pay once, own it forever.

The license is valid on 1 device at a time. If you want to move to a new PC, simply release the seat from inside the app first (using the "Release this seat" button), then activate the key on your new machine.

If the product does not work for you, please send an email to sagarkushwah2510@gmail.com with your activation code and the email address used for purchase within 7 days of purchase. We will initiate your refund within 3-5 working days.

Ready to Share the Sound?

Download SynchCast and start broadcasting to every device in under 60 seconds. Free for 30 days.

Download Free Trial Buy Lifetime — $10.99