Key to Health: Metabolic AI

Name: Key to Health: Metabolic AI
Rating: 4.8 (2239 reviews)
Author: Keyto, Inc.

By: Keyto, Inc.

Your metabolism, optimized

Features & Capabilities

Key to Health: Metabolic AI delivers real-time fat metabolism insights using a breath acetone sensor and an adaptive AI coach. It’s built for busy, high-achieving individuals who want to look better, feel better, and optimize long-term health without spending hours on complex routines. Grounded in science and designed for real life, not gimmicks.

With KEY, you get real-time fat metabolism tracking, a personalized AI health coach, science-based goals with progress tracking, tools to build strength for long-term health, and a flexible eating approach (no strict keto required). Meet KEY, your 24/7 AI coach who learns from your habits and adapts your plan. In a clinical trial, participants following the program lost an average of 10% total body weight over 48 weeks. Subscriptions are auto-renewing at $49.99/month. This app is for adults 18+ and emphasizes practical, sustainable progress over fad diets.

User Growth & Download Statistics

App AI Data Education Open Source Privacy & Security

By:

Keyto, Inc.

Rating:

4.80

(2,239) 1 new ratings

Version:

4.0.3 Last updated: 2026-05-21

Version code:

885938544

Creation date:

2019-02-08

Compatible devices:

Size:

44.95MB

URLs:

Website ,Privacy policy

Full description:

Source:

Apple Apps Store

Data ingested on:

2026-06-10

Compare stats and ranking:

Ranking

# 39,376 ▼ 13

For Developers

Monetize with App Pass Boost with Extension Booster

Contact the developer

Chrome-Stats does not own this Apple app. Please use these information below to contact the Apple app developer.

Developed by:

Keyto, Inc.

Apple Apps Store

https://apps.apple.com/us/app/key-to-health-metabolic-ai/id1441365703

Website:

https://keytohealth.ai

User Reviews

The app is praised for accurate ketone readings, ease of use, visual tracking, and coaching support, but is hindered by onboarding friction, costly subscriptions, reliability and connectivity problems, limited data/input options, and weak support/warranty.

Pros

Accurate and consistent ketone readings from the breath analyzer.
Easy-to-use hardware and a straightforward app interface with clear readings.
Helpful coaching and actionable insights to stay on keto.
Relatively affordable device with strong performance for its price.
Clear visuals and dashboards that make ketosis tracking simple.

Cons

Onboarding requires answering many questions and creating an account, with no skip option.
Premium subscription is overpriced and often seen as poor value.
Reliability/connectivity issues: device/app often fails to connect, slow warm-up, Wi-Fi issues, and occasional malfunction.
Weak food diary/database: limited entries, no barcode scanning, cumbersome data input.
Poor customer support and short warranty (3 months) leading to frustration.

Recent reviews

I have been using Keyto on and off for many years with great results. The new design is super. It was a much needed refresh and it delivers. Excellent product.

by ac*****, 2026-05-30

I don’t have a subscription, so maybe that is why every single day it shows that I it is my first time blowing. It doesn’t show my trend.

by I *****, 2026-04-17

I’ve used the sensor for about a year, and kept a 30 day average of 4-4.8. Since the update, I get a continual battery low indicator (even after 3 battery changes), and mostly get readings of 1. Very annoying that I couldn’t even take a reading after the update without 10 minutes of questions by an AI tool that seems untrained. I’m giving up. It offers no value.