Backed by Science, Proven by Results

In a randomized clinical trial, Keyto users lost 3x more weight than WW users after 24 weeks.

As Featured In

New York Times
New York Post

How It Works

Woman taking Keyto personal assessment

Customize your plan

Our short questionnaire will shape a personalized plan, just for you.

Get your 16 week course

The Keyto course is a personalized lesson plan that ingrains core principles, and also introduces you to a searchable food database, meal plans, recipes, and members-only podcast.

Keyto Health program
Dr. Ethan J. Weiss

Gain access to a team of experts

All Keyto members get individual support from a goal specialist, dietician, and personal trainer. 

Guarantee success with the Keyto Breath sensor

The Keyto Breath Sensor analyzes your breath to tell you if you are burning fat or sugar for energy. It eliminates confusion on if you are on the right track.** 

**98% of device users in our trial lost weight

Customize your program for free

Personalized guidance in the palm of your hand with the Keyto App


Keto-Safe Food

Real reviews from real customers

   1,532 Reviews


“I’ve been doing keto for many years and this device is fantastic! No more capillary blood samples or urine – I can test on the go and know exactly my level of ketosis.”

Holly F.


“Cannot rave enough about your product! By knowing my Ketosis level at all times I feel I am in control of my weight loss program. Recipes are great I’m down 20lbs in the 1st month!!!”

Dave S.


“I love that I am able to monitor my ketone levels often throughout the day. This helps me to see how different foods affect my levels and tweak my diet as needed. Love it!! ” 

Satacy H.

Reach and sustain your health goals

Get the latest in product updates, keto tips and recipes.