FlexPace: AI Run & Walk Coach

FlexPace is an AI running and walking coach that builds your training plan, adapts it to how you're actually recovering, and never sends your data anywhere to do it. Every bit of coaching intelligence runs on-device using Apple Intelligence — no cloud AI, no account, no subscription.

ON-DEVICE AI COACHING Answer a few questions about your goal and experience, and FlexPace builds a real training plan around them — Couch to 5K, 10K, half marathon, marathon, or just general fitness. As you train, it explains its reasoning in plain language, not just a spreadsheet of numbers.

WORKS WITH OR WITHOUT AN APPLE WATCH Start a run on your phone or your wrist — the other one picks it up automatically and follows along. Leave your phone at home and your Watch keeps recording on its own, GPS route and all, and syncs back the moment you're back in range.

MORNING READINESS CHECK-INS FlexPace reads last night's sleep and heart rate variability and, on a rough day, offers to scale back today's session before you even start it — so your plan adjusts to your real recovery instead of just plowing ahead.

THE FLEX SCORE One number that blends your recovery, how much you've been running, and how fit you're getting — with a clear breakdown of what's driving it and concrete suggestions for moving it, not just a black-box score.

FREE RUNS AND THE FLEX TEST Not every run needs to be part of a plan. Start an open-ended Free Run any time, or take the Flex Test — a real 12-minute Cooper test — to benchmark your fitness directly instead of guessing from pace trends.

HEART RATE ZONES Live, escalating heart-rate-zone feedback during every run, with zones you can tune to your own max heart rate rather than a generic default.

PRIVATE BY DESIGN Your health data, your training history, and your location never leave your device or your own iCloud-synced Apple Health data. There's no server, no account, and no ad tracking — because there's no cloud AI to feed it to in the first place.

NO SUBSCRIPTION FlexPace is free, with no premium tier and no paywalled features. If it earns a place in your training, an optional one-time tip is the only way to support it — never required, never nagged for.

FlexPace works with Apple Health and Apple Watch, and syncs your training plan, readiness, and Flex Score to a widget on your Home Screen and Lock Screen so you can see today's session at a glance.

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