Class participants

Join a class from your phone

PulseGrid puts your heart rate on the studio board during class. Grab your trainer’s code, connect your watch or chest strap, and pick a fun display name. It’s free to join. No account and no payment needed.

What you need

  • A mobile phone (laptops and desktops won’t work)
  • Chrome on Android or Safari on iPhone
  • Your trainer’s group code or join link
  • A Bluetooth heart rate monitor (watch or chest strap)

What you don’t need

  • A PulseGrid account or app install
  • Payment (members never pay)
  • Your real name on the board (pick a fun display name instead)

Quick start

  1. Open the join page on your phone (Chrome or Safari).
  2. Enter your trainer’s group code and pick a display name.
  3. Start your watch relay app (Apple Watch) or wear your chest strap.
  4. Tap Connect heart rate monitor and select your device.
  5. Keep the join page open for the whole class.
  6. After class, open Your history on the same phone.

How to join class

Six quick steps. Most people are connected in under a minute.

  1. On your phone, open your trainer’s join link or go to the join page.
  2. Enter the group code (try PULSE for demos) and choose a display name.
  3. Using an Apple Watch? Open your relay app first and start broadcasting. Wait about 10 seconds.
  4. Tap Connect heart rate monitor and pick your device from the list.
  5. When you see your heart rate, you’re live on the board. Keep this page open for the whole class.
  6. After class, your recap is saved on the same phone.

Set up your heart rate device

Pick the card that matches your watch or strap. Not sure? Ask your trainer what most people in class use.

Apple Watch

Your watch can’t talk to the browser directly. Install a small relay app that broadcasts heart rate over Bluetooth, then connect from PulseGrid.

App StoreHeartCast App StoreEcho Heart Rate

HeartCast and Echo Heart Rate are the most popular options.

  1. Open the relay app and start a broadcast.
  2. Wait until it shows your heart rate is transmitting.
  3. Return to PulseGrid join and tap Connect heart rate monitor.
  4. Select the relay device (often named HeartCast, Echo, or similar).
Garmin, Polar, or chest strap

Good news: most standard Bluetooth heart rate monitors work straight away. No extra app needed.

  1. For chest straps, wet the contacts and wear it snugly.
  2. Turn on Bluetooth on your phone.
  3. On the join page, tap connect and select your device.
Android phone or Wear OS watch

Use Chrome on your phone (Samsung Internet and in-app browsers often block Bluetooth).

On your watch, either turn on heart rate broadcast in settings, or install a relay app on the watch from the Play Store:

Google PlayHeart for Bluetooth Google PlayCyfer Heart BLE

Heart for Bluetooth and Cyfer Heart BLE Transmit install on your watch, not your phone. Start the broadcast on the watch, then connect from PulseGrid on your phone.

Fitbit (Charge, Versa, Inspire, Sense…)

Heads up: most Fitbit trackers only share heart rate with the official Fitbit app. They usually won’t work with PulseGrid in the browser. A “disconnected” error in Chrome on Android often means exactly this.

Fitbit Charge 6 or Google Pixel Watch may work (not guaranteed):

  1. On the tracker: swipe down from the clock, then tap HR on equipment.
  2. When prompted, tap Share on the tracker.
  3. On your phone in Chrome, open PulseGrid join and tap connect.

Fitbit only certifies certain gym apps (Peloton, Strava, and others). PulseGrid may not appear even with HR on equipment turned on.

Other Fitbit models? Try one of these:

  • Bluetooth chest strap (Polar H10, Garmin HRM, Wahoo TICKR). The most reliable option for class.
  • Helper app on Android that rebroadcasts Fitbit heart rate. Search Google Play for “Fitbit heart rate bridge” and follow that app’s setup.
  • Ask your trainer if the gym has spare chest straps you can borrow.

Something not working?

Most issues are quick fixes. Tap a question below.

“This page only works on a mobile phone”

You opened join on a laptop or desktop. Copy the join link to your phone, or scan the QR code from your trainer. PulseGrid needs your phone to pair over Bluetooth.

Fitbit + Chrome on Android (connection failed)

Fitbit trackers usually can’t pair with PulseGrid directly. Your Fitbit may show up in the list, but the connection fails because Fitbit doesn’t send a standard heart rate feed to web apps.

Try a chest strap, or use the Fitbit section above for Charge 6 and bridge-app options.

Tracker disconnected (other devices)

Your watch or relay app lost the Bluetooth link before pairing finished. Open HeartCast or Echo Heart Rate, start broadcasting, wait about 10 seconds, then tap Connect heart rate monitor again and re-select your device.

My device doesn’t appear in the Bluetooth list
  • Apple Watch: start your relay app before you tap connect.
  • Turn Bluetooth off and on on your phone.
  • Move closer to your phone and close other fitness apps that might be using the strap.
  • Chest straps: wear the strap so it detects heart rate (some blink when ready).
Heart rate stops or freezes on the board

Keep the PulseGrid join tab visible and in the foreground. Switching apps or locking your screen can pause the feed.

Tip: add PulseGrid to your home screen — in Safari tap Share → Add to Home Screen; in Chrome tap the menu → Add to Home screen. That keeps the join page easier to return to during class.

Where is my workout history?

After class, open Your history or Profile on the same phone you used to join. No account needed — stats are saved on your device.

Web Bluetooth not available

Use Chrome on Android or Safari on iPhone. In-app browsers (Instagram, Facebook, email apps) often block Bluetooth. Open the link in your main browser instead.

Wrong or missing group code

Ask your trainer for the code shown in their console. Demo classes may use PULSE. Codes are not case-sensitive.

During and after class

Running the class? Trainers use the studio setup guide — not this page.