# KronixAI — AI-Powered Health & Fitness > AI health companion tracking sleep, fitness, nutrition, and lifestyle for longevity. (iPhone/iPad app by WESLEY WEI-FAHN HUANG.) - Source: https://appshunter.io/ios/app/kronixai/id6780015031 (this page in markdown: same URL + `.md`) - Developer: [WESLEY WEI-FAHN HUANG](https://appshunter.io/developer/6780015033) - Category: Health & Fitness - Price: Free - Rating: 5.00/5 from 1 App Store ratings - Age rating: 17+ - Requires: iOS 15.1 · 49 MB - Languages: American English - Released: 2026-07-16 - Data updated: 2026-09-24 - Monetization: free - User reviews in markdown: https://appshunter.io/ios/app/kronixai/id6780015031/reviews.md ## What is KronixAI? KronixAI is the AI health companion built for a longer, stronger life Most health apps track one thing. KronixAI tracks everything that matters — sleep, fitness, nutrition, and the lifestyle factors around them — and uses AI to reason across all of it at once. When your gym performance drops, KronixAI connects it to a week of short deep sleep and Monday's late, heavy dinner. Come back from a trip, and it works out how to fix your jet lag without derailing your training. Few apps are as personalized — or as attuned to your goals and schedule — as this. WHAT MAKES KRONIXAI DIFFERENT Longevity lens — every insight is framed through the science of biological aging: metabolic health, inflammation, cellular repair, mitochondrial function, hormonal balance. Centralized health data — one app for every pillar plus your injury state, and one AI that sees all of it. Cross-pillar intelligence — automatically explains how last night's sleep affected today's session, how your nutrition is slowing an injury's recovery, or how a big night out is showing up in your HRV. It remembers — your whole history is on tap ("what was I benching in April?", "how has my sleep trended this year?"), and it learns your personal baselines and patterns — like how travel affects your sleep — instead of judging you against population averages. Conversational by default — log data, ask questions, and get recommendations in plain language. Snap a photo of a meal and the macros are estimated for you. Daily scores and insights — wake up to a readiness score for today, a long-term trajectory score, and the single highest-impact thing to do — generated fresh each morning from your data. Visual dashboards — rich charts and trends for every pillar; watching your deep sleep, squat progression, or protein intake over time is core to the experience, right alongside the chat. Agentic — the AI doesn't just answer; it logs your data, edits entries, builds and saves training programs and meal plans, and takes action for you. WHAT IT TRACKS Sleep — stages, HRV, resting heart rate (via Apple Health) Fitness — per-set strength data, volume, and progression; Apple Watch workouts Nutrition — meals, macros, and meal timing Injury & resilience — injury sites, pain over time, and rehab/prehab consistency Body composition — weight, body fat, and muscle mass Life — activities, travel, illness, and factors like alcohol, stress, and cycle that affect the rest Built for wherever you're starting from — brand new to exercise, an experienced lifter optimizing, improving at a sport, fixing your sleep, or simply investing in a healthier future. KronixAI is powered by Claude, Anthropic's AI. Your health data is used solely to generate your insights and is never sold. Not a substitute for professional medical advice. ## Key features - AI-powered cross-pillar health analysis - Longevity-focused insights - Centralized health data tracking - Personalized baselines and pattern learning - Conversational data logging and recommendations - Daily readiness and trajectory scores - Visual dashboards for trends ## Frequently asked questions about KronixAI ### What makes KronixAI different from other health apps? KronixAI distinguishes itself by tracking multiple health pillars (sleep, fitness, nutrition, lifestyle) and using AI to analyze their interconnectedness. It frames insights through the science of biological aging and learns personal patterns rather than relying on population averages. ### What kind of data does KronixAI track? KronixAI tracks sleep stages, HRV, resting heart rate, per-set strength data, workout performance, meals, macros, meal timing, injury status, body composition, and lifestyle factors like activities, travel, alcohol, and stress. ### How does KronixAI use AI? The AI in KronixAI reasons across all tracked health data to explain correlations, such as how sleep affects gym performance or how nutrition impacts injury recovery. It also logs data, edits entries, and builds personalized plans. ### Is KronixAI suitable for beginners? Yes, KronixAI is built for users at any starting point, whether they are new to exercise, optimizing as an experienced lifter, improving at a sport, or investing in a healthier future. ### Does KronixAI provide daily health recommendations? Yes, users wake up to a readiness score, a long-term trajectory score, and the single highest-impact action to take each day, generated fresh from their data. ### How does KronixAI handle user privacy? Your health data is used solely to generate your insights and is never sold. The app is powered by Claude, Anthropic's AI, and emphasizes data privacy. ### Is KronixAI available on multiple devices? Based on the provided data, KronixAI is supported on iPhone and iPod devices. ### How often is KronixAI updated? The latest version of KronixAI is 1.1, and it was last updated on August 6, 2026. This indicates a recent update cycle. ## Version history (last 2 releases) ### 1.1 — 2026-08-06 An optional morning insight nudge — turn it on in Profile or when prompted. ### 1.0 — 2026-07-16 No release notes. ## Apps similar to KronixAI | App | Rating | Price | Category | | --- | --- | --- | --- | | [Fitzenia: AI Calorie Tracker](https://appshunter.io/ios/app/fitzenia-ai-calorie-tracker/id6767146607) | 5.0 (1) | Free | Health & Fitness | | [TrainYourWay](https://appshunter.io/ios/app/trainyourway/id6505123322) | 5.0 (4) | Free | Health & Fitness | | [Mos Health](https://appshunter.io/ios/app/mos-health/id6755740727) | — | Free | Health & Fitness | | [The Gymnastics Academy UK](https://appshunter.io/ios/app/the-gymnastics-academy-uk/id6786327849) | — | Free | Health & Fitness | | [Enerium Health](https://appshunter.io/ios/app/enerium-health/id6760731986) | — | Free | Health & Fitness | | [VERA - AI Running Coach](https://appshunter.io/ios/app/vera-ai-running-coach/id6799775464) | 5.0 (1) | Free | Health & Fitness | --- *Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-09-24.*