FitInsights

FitInsights turns the data your iPhone and Apple Watch already collect into a daily training and recovery coach with full transparency and detailed explanations. Every calculation runs on your device, using your Apple Health data: workouts, heart rate, HRV, sleep, resting heart rate, steps, VO2 max, and body composition. No account, no upload, no ads (there is a small amount of user-provided inputs that get shared across the devices on your account via iCloud). The Three Main Views (How It Works) Dashboard: your daily decision - Morning Capacity (0–100): overnight recovery minus what you've already spent - Today's Load vs. your target band, with a rolling training "Base" - Effort guidance: recovery, easy, moderate, or hard (matched to how you actually slept and recovered) - Recovery chips for sleep, HRV, resting heart rate, sleep debt, and sleep regularity - After-workout capacity, updated the moment you finish a session Insights: the multi-week picture - HR zone distribution and polarization, so you can see easy-vs-hard balance at a glance - Load trend using short-term:long-term load ratio, shown as a trend - HRV and resting heart rate against your own rolling baseline - Sleep duration and regularity over time - A wellness journal that sits alongside your objective data, without pretending the two always agree - VO2 max and body composition trends, confidence-gated so noise doesn't masquerade as progress - A metric library for anything else you want to chart and baseline from Apple Health data Engine: is your fitness actually improving? - Heart-rate recovery trend: how fast your heart rate drops after effort, a well-studied marker of aerobic fitness - Aerobic efficiency trend: whether your heart rate is drifting less at the same pace over time - A plain-language nudge on what (if anything) to add this week that always respects your current recovery - An optional, opt-in monthly fitness check using a simple walk or run test; shown next to, never instead of, your Apple Watch VO2 max estimate BUILT ON REAL SPORTS SCIENCE: training-impulse and acute:chronic workload methods, heart-rate-reserve zones, HRV baselining, and heart-rate-recovery research, instead of a black-box score. PRIVATE BY DESIGN: reads from Apple Health, never writes anywhere else. No server, no login, and all calculations performed on-device. FOR RUNNERS, CYCLISTS, AND EVERYDAY ATHLETES: built for recreational and endurance athletes who want to train smarter, not race-time prediction gimmicks or fake-precision scores. FitInsights provides wellness and training guidance only. It is not a medical device and does not diagnose, treat, cure, or prevent any disease. Always consult a healthcare professional for medical concerns. Requires an iPhone with Health app data. Apple Watch recommended but not required. Privacy Policy - https://projectjth.com/multi-purpose Apple EULA - https://www.apple.com/legal/internet-services/itunes/dev/stdeula/