Mettle: AI Strength Coach

About

Mettle is the strength coach that shows its work. Every set, rep and weight comes from a training engine that learns from your logs, and one tap on Why this? shows you the reason. WHY THIS? ON EVERY LIFT See the rule the engine applied, the sessions it came from and what happens next time. A weight goes up because you earned it, holds because a set was a grind, and drops on a planned recovery week. Nothing is a mystery. A COACH YOU CAN QUESTION Ask why your bench isn't moving and you get the engine's reasoning in a sentence or two, with your own sessions charted underneath. Ask how your squat is going, what your next workout is or how many sets you've done this week, and the answer comes straight from your log. The on-device model holds the conversation and picks exercises from a curated library of 263 lifts. It never sets a number. PROGRESSIVE OVERLOAD, DONE FOR YOU Load jumps when you're ready, back-offs when a lift stalls, plateau resets, training max cycles and deload weeks on schedule. Tell Mettle a set felt too light, just right or too heavy and the next sets adjust. WORKS AROUND WHAT HURTS Tell the coach your knee aches in a deep squat and it proposes a swap that spares the knee, lighter jumps on affected lifts and a weekly check-in. Every change is a card you approve. Nothing applies silently. LOG FAST, EVEN LOCKED One big Complete Set button, automatic warm-ups, plate math, timed holds for planks and carries, and rest alerts on the Lock Screen through a Live Activity. Short on time? Adapt today in one tap without rewriting your program. APPLE WATCH Start the workout, mark sets and rest from your wrist, with heart rate during rest. SPEAKS YOUR LEVEL Same engine, different words. A first-week lifter gets plain language and a veteran gets percentages, training max and RPE. CLASSIC PROGRAMS OR YOUR OWN Generate a program around your goal, days and equipment, or run a well-known published program as written, with Mettle's logging and explanations on top. PRIVATE BY DESIGN Your training, body metrics and conversations stay on your iPhone and sync only through your own iCloud. No account, no ads, no analytics. Apple Health is optional. Mettle works fully without Apple Intelligence. The engine plans and explains every session either way. FREE Program generation, live workout logging, Why this?, the coach with memory, injury-aware programming, Apple Watch, widgets and Siri. METTLE PRO • Weekly Coach Review: what changed, the evidence and your next actions • Personal records and per-exercise strength trend charts • Form coaching: one tuned cue on every rest • Unlimited saved programs you can switch between • Compare training blocks to see which style worked for you SUBSCRIPTION AND PRICING Mettle Pro is offered as: • Mettle Pro Monthly: $4.99 per month, auto-renewing subscription • Mettle Pro Yearly: $29.99 per year, auto-renewing subscription, with a 7-day free trial for eligible new subscribers • Mettle Pro Lifetime: $79.99, one-time purchase, does not renew Prices are in US dollars and may vary by country and region. Payment is charged to your Apple Account at confirmation of purchase, or when a free trial ends. Subscriptions renew automatically at the same price and length unless auto-renew is turned off at least 24 hours before the end of the current period. Your account is charged for renewal within 24 hours before the end of the current period. Manage or cancel any time in Settings > [your name] > Subscriptions. Any unused part of a free trial is forfeited when you buy a subscription. Restore Purchases is in the paywall and in Settings. Mettle is a fitness tool, not a medical device, and gives no medical advice. Check with a doctor before starting a new training program. Privacy Policy: https://obsidianridgelabs.com/privacy Terms of Use (EULA): https://obsidianridgelabs.com/terms Support: support@obsidianridgelabs.com