Proof vs Lift Eccentric

Proof is a lifting log for people who want a record, not a coach. Most fitness apps tell you what to do. Proof measures what you did, every set, and shows you whether you beat last time. WHAT IT DOES - Log a set in two taps. Weight, reps, done. - Every lift keeps its full history. Nothing is capped or hidden. - Personal records are detected automatically and sealed the moment you hit them. - A body map shows which muscles you have trained hard and which you have skipped. - Patterns surface the honest stuff: your best day, your steadiest day, where you stall. - A rest timer that runs in the Dynamic Island and on the Lock Screen. WHAT IT DOES NOT DO - No subscription. Pay once, keep it forever. - No account. Nothing to sign up for. - No cloud. Your training stays on your phone. - No ads, no feed, no streak guilt. FREE AND PAID Log as much as you want for free, and the last 30 days are always open. A one-time unlock opens your full history, the body map over time, and every record back to day one. Built by one person who lifts and wanted an honest instrument, not another coach. Log your lifts. Beat last time.

Eccentric is a training log that records every workout — on any equipment — and connects it to the rest of your life: your wearable's recovery data, your calendar, and your AI assistant. Plans, history and honest progress in one place. Built with first class support for the Voltra I smart cable trainer, and just as at home with barbells, dumbbells, machines, bands or bodyweight. RECORD EVERY WORKOUT • Check sets off as you train — your reps and load count toward volume and history immediately. • Import your Voltra export and measured velocity, power and range of motion replace the numbers you entered. • Log on any equipment: cable, barbell, dumbbell, machine, bands or bodyweight. CONNECT YOUR RECOVERY • Bring in sleep, HRV, readiness and resting heart rate from your wearable (Oura and more). • See how recovery lines up with your training PROGRESS YOU CAN TRUST • Personal bests and strength, velocity, power and volume over time PLAN YOUR WEEK • Lay out your training days and rest days. • Sync your plan straight to Apple or Google Calendar. TRAIN WITH A COACH • Share a plan with a coach or training partner. ASK YOUR AI ASSISTANT • Connect your training to an AI assistant to review sessions, adjust plans and answer questions in plain language. BUILT FOR ECCENTRIC OVERLOAD & BFR • Purpose-built for eccentric (lowering-phase) training and blood-flow-restriction (Kaatsu) work, treated as first-class training conditions rather than an afterthought. Start free — record your next session in seconds.