GreyBand Helps You and Your Loved Ones Get Home Safely

Estimate Your Alcohol Level in Seconds

Make Responsible and Informed Decisions

Automatically Notify Designated Help

Traditional Breathalyzer Testimonials

  • "I wish there was some way to keep track of it. I keep getting drunk and losing it. I'm on my fourth one."

    Verified Amazon Review

  • "This is a life-saver! I just wish it didn't take up so much space in my pocket."

    Verified Amazon Review

  • "This BACtrack is amazing! Very easy to use, very accurate. Only giving three stars because the app leaves something to be desired."

    Verified Best Buy Review

  • "App is buggy and unintuitive. Why even make it Bluetooth if there is no effort in the app?"

    Probleme.app Comment

  • "So much fun and always a hit at parties! My friends and I love seeing who can blow the highest!"

    Verified Best Buy Review

GreyBand is the next great innovation in alcohol safety — quick and accurate results with intuitive and integrated next steps.

For Nights Worth Remembering

Tech Specs

  • Fuel Cell Alcohol Sensor

Accurate within 0.01% BAC

  • Bluetooth 5.0

Compatible with iOS and Android

  • Battery

Full day battery life

  • Visual Indicator

Simple device signaling

  • Haptic Feedback

Intuitive vibration for ease-of-use

  • Adjustable Strap

12-notches one-size-fits-all

  • Material

Durable ABS plastic shell

  • Weight

0.85oz / 24g

How to Use

GreyBand Development Status

  • Patent pending since 2022

  • Prototypes manufactured in 2023

  • Partnerships established in 2024

  • Manufacturing and delivery in 2025

What is holding us back?

The main barrier for GreyBand’s development is money.

We are currently raising $200,000 to finance the next 6 months including final hardware and software development, and partnering with Duke and UNC to run trial experiments with small student populations.

GreyBand Mobile Application

The GreyBand app is what brings our life-saving capabilities to the next level

  • Automated safety notifications

  • Personalized data-driven insights

  • Social community features

Pre-order Today

Pre-order your GreyBand today!

Delivery estimated for Summer 2025.

Connected

Wearable

Innovative