Peak Fettle

Log a set in seconds. See your strength percentile against people your size and age. Train the muscle groups you're behind on. All computed on your phone.

Peak Fettle is a workout tracker built around one question: are you actually getting stronger?

Log your lifting in seconds, see exactly where you stand against people like you, and let the numbers steer your next block of training — all computed on your phone, in plain sports-science arithmetic you can inspect.

LOG A SET IN SECONDS Weight, reps, effort — done. The rest timer starts itself, supersets and drop sets are one tap, warm-up ramps and a plate calculator handle the bar math, and RIR or RPE effort tracking is built in. Train in kg or lb per session; every weight is stored exactly as you typed it.

KNOW WHERE YOU STAND Strength percentiles for squat, bench press, deadlift and 40+ more lifts — matched to your cohort by sex, age band, bodyweight and years trained, never one giant leaderboard. Climb the strength tiers as your estimated one-rep max grows, and confirm a real 1RM whenever you want the record exact.

NEW: YOUR MUSCLES, MAPPED Every ranked lift now scores its muscle group. A front-and-back body map shows where you're elite and where you're behind — chest, back, shoulders, biceps, triceps, quads, hamstrings, glutes, calves — with plain-language notes like "pressing outruns isolation: side delts are the gap."

PLANS THAT DO THE MATH The on-device training engine builds hypertrophy, strength and meet-peaking blocks: volume ramps week by week, deloads land on schedule, and your weak muscle groups automatically get extra sets — with the reasoning written out, rule by rule. Deterministic arithmetic, not a black box.

ONE HONEST NUMBER Your 0–1000 strength score blends estimated 1RM, volume, progressive overload and consistency. Prefer the classics? Switch to DOTS or Wilks any time.

STREAKS THAT FORGIVE REAL LIFE A week counts if you show up once — a session, a rest-day check-in, or imported cardio all keep it alive, and the week you're mid-way through is never held against you.

TRAIN WITH FRIENDS Accountability groups with weekly goals and a shared group streak. Admins choose the visibility level, from private to full transparency, and hitting your week together earns everyone credits.

EVERYTHING ELSE YOU'D EXPECT Routines and folders. Weekly or rotating training schedules that put "Start Pull workout" on your home screen. Daily weigh-in reminders with weekly medians. Apple Health import. Personal records and full workout history. Cardio and conditioning timers.

YOUR DATA STAYS YOURS Built local-first: on the free tier your training data lives on your phone, not our servers. Optional backups are end-to-end encrypted with a key only you hold. No ads, no tracking SDKs. Details: peakfettle.app/security

PEAK FETTLE PRO (optional auto-renewing subscription) Cloud sync across devices and server-powered features, monthly or yearly — prices are shown in the app before purchase. Payment is charged to your Apple Account at confirmation. Subscriptions renew automatically unless cancelled at least 24 hours before the end of the current period, and can be managed in your Apple Account settings.

Privacy Policy: https://peakfettle.app/privacy Terms of Use: https://peakfettle.app/terms