World Sleep Day 2026

Sleep

Nightshift

Name: Nightshift
Brand: Vagal
SKU: VT89330
Price: 39.00 USD
Availability: InStock

You clock off. Your vagus nerve clocks on. A 20-minute pre-sleep protocol that shifts your nervous system from alert to at ease.

20Hz frequency

20Min session

20Min before bed

$39.00

Instant delivery to your Vagal Tones app

Research-backed sleep parameters

One-time purchase, yours forever

Nightshift only $39.00 Instant download to your Vagal Tones app SAVE $39.00

+ Vagal Buddy device $349.00 Nightshift ~~$39.00~~ FREE Offer ends September 30th

Better Sleep Starts Here

Parameters from published research No subscription Secure checkout

What Nightshift Does

Supports deeper sleep

Research suggests tVNS at 20 Hz increases time in N3 deep sleep and reduces the micro-arousals that fragment rest. Nightshift uses the parameters identified as optimal in a 2025 sleep study.

Shifts from alert to at ease

Stimulating the vagus nerve activates the parasympathetic branch of your nervous system, helping your body transition from daytime alert mode into recovery mode before bed.

20 minutes during your wind-down

Clip on while you read, stretch, or settle into your evening routine. When the session ends, remove the clip and get into bed. No disruption to your habits.

Research-backed protocol

Based on a 2024 RCT published in JAMA Network Open and a 2025 parameter optimisation study in SLEEP. Not a guess -- the frequency and pulse width that performed best under polysomnography.

Is This Tone Right for You?

Nightshift is designed for anyone who wants to support better sleep quality through targeted vagus nerve stimulation before bed.

Difficulty winding down in the evening

Light or restless sleep

Wanting a non-drug approach to better rest

Already using Balance but want a sleep-specific protocol

Device Compatibility

tVNS Stimulator

All firmware versions

Research Edition

Uses the Tone Portal instead

Vagal Oh!

Via Vagal Tones app

Vagal Boost (tENS)

Uses built-in modes

Technical Specifications

Frequency20 Hz

Pulse Width100 us

WaveformSquare

Session Duration20 min

Recommended Timing20 min before bed

Delivery MethodDigital (Vagal Tones App)

LicencePermanent, single device

Why Different Tones Exist

Your vagus nerve responds differently to different stimulation patterns. Just as a single medicine can't treat every condition, a single stimulation protocol can't optimise every function. That's why Vagal devices support multiple Tones -- each one precisely tuned for a different outcome.

Frequency changes the response

Low frequencies tend to promote calm and relaxation. Higher frequencies can target gut function and inflammation. The right frequency depends on what you're trying to achieve.

Pulse shape matters

The shape and width of each electrical pulse affects how nerve fibres respond. Narrower pulses are gentler. Wider pulses recruit more nerve fibres. Different goals need different pulse profiles.

Your needs change over time

Stress, recovery, digestion, sleep -- your body has different needs at different times. A device limited to one protocol can't adapt with you. Tones let you match stimulation to the moment.

Many stimulators offer only one fixed protocol. Vagal devices support an expanding library of Tones so your stimulation grows with the science -- and with you.

How Tones work

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.

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Tones FAQ

Everything you need to know about Vagal Tones

Why has the app changed its name? Do I need to reinstall it?

We have completely rebuilt the app in Flutter with a focus on Bluetooth connection stability and a smoother overall experience. As part of this, the Android version has a new listing on Google Play under the name Vagally Better. If you are on Android, you will need to install the new app -- it will not update automatically from the old version. We recommend uninstalling the old app once you have the new one set up. If you are on iPhone or iPad, the iOS app will update through the App Store as normal -- you do not need to do anything. The iOS version will also be renamed to Vagally Better in a future update, but the app will continue to work exactly the same regardless of the name shown.

Will the app work with my existing device?

How quickly do I receive a tone after purchase?

Tones are digital products delivered instantly after purchase - there is nothing to ship. Once you complete checkout, the tone is immediately available in your app (called Vagal Tones on iOS and Vagally Better on Android).

Because tones are digital and delivered instantly, they are non-refundable once downloaded. Please check device compatibility before purchasing.

Can I set a custom frequency on my stimulator?

The Custom Frequency tone lets you set any frequency from 1 Hz to 100 Hz. If you have a specific frequency in mind - whether from a research paper, a clinician recommendation, or personal preference - this is the tone for you.

If you own the Research Edition, you also get access to the Tone Portal at vagal.com/portal, which gives even more granular control over pulse parameters.

Do I need to buy tones to use my stimulator?

No. Your tVNS Stimulator works perfectly well with its built-in default tone. The default protocol covers general vagus nerve stimulation and is what most customers use day to day.

Additional tones are for people who want to experiment with different frequencies or target specific wellness goals. They are entirely optional and your stimulator will continue to work without them.

How do I load a tone onto my stimulator?

After purchasing a tone, open the app on your phone (called Vagal Tones on iOS and Vagally Better on Android) and connect to your stimulator via Bluetooth. The new tone will appear in your library ready to load. Tap the tone, then tap Load - the transfer takes a few seconds.

Once loaded, the tone stays on your device. You do not need your phone or the app during stimulation sessions. You can switch between loaded tones at any time.