Protocols for Your Nervous System
Precision stimulation settings that load instantly to your device via the Vagal Tones app. Each Tone is tuned for a specific wellness goal.
Free Calm with every device
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Available Tones
9 protocolsGentle Rhythms
A slow, soothing pulse designed for sensitive nerves. Eases you into parasympathetic calm.
Ideal for beginners or anyone new to vagal stimulation.
Balance
The foundation tone. Designed for general autonomic rebalancing and daily nervous system tuning.
Included free with your device. The starting point for everyone.
Bespoke Tone
Every setting is yours to choose: frequency from 1 to 100 Hz, pulse width and timing. Built to order from your practitioner's protocol or your own.
For anyone following a specific protocol from a doctor or researcher.
Nightshift
Your nervous system's night shift. A 20-minute pre-sleep protocol at 20 Hz designed to shift your autonomic balance from alert to at ease.
For anyone who struggles to wind down before bed.
Research Edition Upgrade
Unlock full device control with exact mA adjustment, BLE connectivity, data export, and API access.
For practitioners, researchers, and clinicians running studies.
Load a Tone in 60 Seconds
No cables. No complicated setup. Purchase, sync, stimulate.
Purchase
Buy a Tone here. It appears instantly in your Vagal Tones app account.
Sync to Device
Open the app, connect via USB or Bluetooth, and transfer the Tone to your stimulator.
Stimulate
Select your new Tone on the device and begin your session. That's it.
Using Tones with Buddy
Three Tones, one joystick
Buddy carries up to three Tones and lists them on its screen, so switching between sleep, stress and recovery protocols takes a second.
Nudge to highlight
Push the joystick up or down to move through your three Tones.
Press to choose
Push it in and Buddy opens the session timer for that Tone, ready to start.
You choose which three Tones Buddy carries in the Vagal Tones app, and can change them whenever you like. See how syncing works
Don't have a Buddy yet?
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What Are Vagal Tones?
Vagal Tones are downloadable stimulation protocols that control how your device stimulates the vagus nerve. Each Tone sets the frequency, pulse width, duty cycle, and session structure — the parameters that determine what the stimulation does and how it feels.
Different protocols activate different nerve fibre populations. Lower frequencies (around 1-10 Hz) tend toward calming, parasympathetic activation. Higher frequencies (around 25 Hz) are used in most published clinical tVNS research for general autonomic improvement. Duty cycle — the ratio of stimulation to rest within each cycle — affects both tolerability and therapeutic effect.
Every Tone in the library is developed from published clinical research parameters. When a new study demonstrates effective stimulation settings for sleep, mood, digestion, or recovery, those parameters are translated into a downloadable Tone that works with your device. Your stimulator improves over time as new research is published — no hardware change needed.
Tones are delivered instantly via the Vagal Tones app on iOS and Android. They work with Vagal Buddy tVNS and Vagal Oh!. Researchers can create fully custom protocols with unrestricted parameter ranges using the Tone Research Portal.
Tones FAQ
Why has the app changed its name? Do I need to reinstall it?
Will the app work with my existing device?
How quickly do I receive a tone after purchase?
Can I set a custom frequency on my stimulator?
Do I need to buy tones to use my stimulator?
How do I load a tone onto my stimulator?
Downloadable stimulation protocols for your Vagal device. Each Tone targets a specific benefit with parameters developed from published research. Find the right protocol for sleep, stress, digestion, recovery and more.