KronixAI
WESLEY WEI-FAHN HUANG Health & Fitness iPhoneiPadiPod touch
KronixAI is a free Health & Fitness app for iPhone and iPad by WESLEY WEI-FAHN HUANG. Rated 5.0/5 from 4 ratings. Requires iOS 15.1. Updated August 6, 2026.
- Rating
- 5.0
- 4 ratings
- Price
- Free
- on the App Store
- Size
- 49 MB
- Age 17+
- Updated
- Aug 6
- 2026 · v1.1
Screenshots
About 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.
What’s new
Version 1.1 · Updated August 6, 2026
An optional morning insight nudge — turn it on in Profile or when prompted.
App privacy
The developer, WESLEY WEI-FAHN HUANG, reported these privacy practices to Apple.
Data Linked to You
The following data, which may be collected and linked to your identity, may be used for the following purposes:
- Health & Fitness: Health, Fitness
- Contact Info: Email Address, Name
- User Content: Photos or Videos, Other User Content
- Identifiers: User ID, Device ID
Used for: App Functionality
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| App | Rating | Price | Last updated | Compare |
|---|---|---|---|---|
| KronixAI | 5.0 / 5 (4 ratings) | Free | August 6, 2026 | |
| Workout Recovery: RestOrPush | – | Free | Oct 9, 2026 | Compare |
| Fitzenia: AI Calorie Tracker | 5.0 / 5 (1) | Free | Oct 13, 2026 | Compare |
| TrainYourWay | 5.0 / 5 (4) | Free | Oct 17, 2026 | Compare |
| NIS+RISC Prep | 5.0 / 5 (11) | 9.99 USD | May 19, 2026 | Compare |
| trainedB.ai | 5.0 / 5 (3) | Free | Oct 21, 2026 | Compare |
| Mos Health | 5.0 / 5 (1) | Free | Oct 15, 2026 | Compare |
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