Keyto is the lifestyle program that will help you lose weight, feel energized, and sleep better. Developed by world renown weight loss and metabolism experts, the program includes a scientifically backed food program along with the Keyto breath sensor.

The Program:
- Eat satisfying foods until full
- Don't feel restricted
- No calorie counting or food weighing necessary

The Keyto Device:
- Breathe into the device to know exactly how you are doing
- Get instant feedback on how your metabolism is working
- Keep your number up and naturally lose weight

The App:
- Track your scores and weight
- Access all the resources you need to succeed
- Connect with others on the program

By combining the Keyto device with this App, you will be empowered to reach your health goals in the most effortless, enjoyable and natural way possible.

What’s New

Version 1.1.10

Bug fixes and performance improvements

Ratings and Reviews

3.2 out of 5
38 Ratings

38 Ratings

seniorvancamper ,


The app is easy to use and contains some good information on the diet. Not sure if the Keyto device works. It seems to register the same reading most of the time. The app also has some interesting potential in tracking how you feel about various things like sleep, energy levels, etc. You get asked those questions while the device is warming up. However, of the dozen or so metrics, it asks "How do you feel about your.." and then shows 5 mood selections. It fails to display the current metric name. (IPad 12.9 display running iOS 12.2). As far as I can find, there is no support contact... sigh.

justdnk ,

Annoying to use and I don’t think it reads reliably

First of all, I ate burger, pizza, and drank beer for 2 days straight because of bachelor party, so I broke my ketosis. Keyto read my keytones level as 3, which is light ketosis. It doesn’t seem accurate.

In addition, Keyto device is annoying to use as it takes 2 minutes to warm up. After warming up and hits 100% it automatically tries to measure your breath, so if you missed it for some reason you gotta let it warm up again.

Bergerfrombalto ,

Life Changer

This app is amazing - I have been using for 5 months as alpha tester. It allows for real time monitoring of Ketosis levels. Forget about the scale, focus on your scores and the weight will fall off over time. Terrific diet, nutrition and lifestyle tips for Keto folks on this app as well. Down 30 lbs in 6 months. After a few months when your body has adjusted, you can back off the zero tolerance approach and cheat occasionally with no negative effects. Just keep focused on those scores. Thank you Keyto!!!


Keyto, Inc.
84.1 MB
Health & Fitness

Requires iOS 10.0 or later. Compatible with iPhone, iPad, and iPod touch.



Age Rating
Rated 4+
© 2019 Keyto, Inc.
In-App Purchases
  1. Keyto Annual Subscription $95.99
  2. Keyto Monthly Subscription $14.99


  • Family Sharing

    With Family Sharing set up, up to six family members can use this app.

You May Also Like