Alternatives to Key to Health

Levels is a continuous glucose monitoring and metabolic health platform that shows how your meals, sleep, and activity move your blood

Open-source, offline-first fitness PWA with two on-device AI coaches: Iron Mike Workout and the Smart Recipe Agent

The Pod 6 cools and heats each side of your bed from 55°F to 110°F while tracking your sleep biometrics overnight.

JEFIT is a gym workout tracker with an AI Adaptive Plan that rebuilds next week's lifting from your logged sets and fatigue.

Fitia is an AI calorie counter and meal planner that logs meals by photo, voice, text or barcode and builds macros-matched meal plans.

Oura's smart ring delivers sleep, recovery and stress tracking with 50+ metrics in the Oura App

Strava is GPS activity tracking that turns every run, ride, or swim into a social, segment-racing workout with AI coaching.

MacroFactor is an ad-free macro tracker that recalculates your calorie and macro plan from your metabolism every week.

TrakMac does voice-first AI macro tracking: say your meal out loud and get calories and protein in under 10 seconds

Yazio's AI calorie tracker logs meals from a photo and keeps fasting timers in the same app.

AI nutrition tracking that logs your food from photos, with Ria as your AI assistant and real dietitians on call.

HYBRD connects your AI coach to your real training data over MCP, then pushes built workouts to your watch.

Adaptive macro tracker that recalculates your macros at weekly check-ins and logs meals with AI scanning.

A swipe-to-log strength tracker built around progressive overload, 1,000+ exercises and an AI plan generator.

Free AI calorie and workout tracker for iOS and Android with unlimited photo, barcode, and menu scans.

Athlytic turns Apple Watch recovery data into one daily Target Exertion Zone for smarter training.

Swimio builds your swim session on iPhone, then guides every interval on Apple Watch.

Metric turns Apple Health and Apple Watch data into a recovery, readiness, and biological-age dashboard for iPhone.

PeakWatch turns the Apple Health data your Apple Watch already collects into training guidance, so you know when to push and when to pause.

Sleep earbuds with hybrid ANC and a no-subscription app for quieter nights and clearer mornings.

AI Calorie Counter turns a meal photo into logged calories, macros, water and weight on your phone — no manual entry.

AI calorie and macro tracker that logs meals from a photo or chat and coaches you toward weight loss or muscle gain.

Kim by Oculi Medical reads your lab PDFs and wearable data to deliver daily personalized health guidance.

iOS app that turns your daily actions into a biological age and rate-of-aging estimate.

Lucis is a preventive-health membership that tests 110+ biomarkers twice a year and turns results into a personalized protocol.

Nori is an AI health advisor that connects your wearables and labs, then tells you what to focus on today.

AI tracker that logs meals from photos, tracks workouts, and gives 24/7 coaching on iOS and Android.

A quiz-built 7-day meal plan with exact macros across 30+ diet and health-condition profiles.

Photo-first calorie tracker: snap your meal, get instant calories, protein, carbs, and fat.

Scan any meal, skincare bottle or packaged product for calories, a 0–100 health score and a plain-language additive flag.