1Rep: 1RM Calculator & PR Log

The #1 PR tracker & 1RM calculator for powerlifters, CrossFitters, and serious lifters. Epley, Brzycki, RPE-adjusted. Track bench, squat, deadlift PRs. Own your strength.

Your lifts deserve more than a notes app.

1Rep is the PR tracker built for lifters who treat every session like it matters — because it does. Log a PR in seconds. Watch your strength compound week over week. Hit new milestones. And when you PR, share it like it counts.

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YOUR STRENGTH, FINALLY MEASURED

Most apps guess your 1RM with one formula. 1Rep uses seven — Epley, Brzycki, Lander, Lombardi, Mayhew, O'Conner, Wathan — and shows you how confident each estimate is with R² scores. No other PR tracker gives you this.

Run the math forward: enter your working set, get your true 1RM. Run it backward: enter your goal 1RM, get your training weights for every rep range.

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WHERE DO YOU STAND?

1Rep rates your lifts against real strength standards, scaled to your bodyweight. Are you Novice, Intermediate, Advanced, or Elite? You'll know by your next session.

See your percentile. Know your next target. Stop guessing.

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EVERY REP HAS A STORY

• Log PRs with weight, reps, RPE, location, and notes
• Track the misses too — the bars you almost had
• Plate Calculator — exact loading for standard or Olympic bars
• Training Zones — every % of your 1RM, mapped to warm-up, hypertrophy, strength, or max effort
• 8 muscle categories + unlimited custom lifts
• Complete history, filterable by exercise or category

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MOMENTS WORTH SHARING

Hit a new max? Don't just log it — own it.

Generate stunning PR cards in 9 visual styles — Chalk, Steel, Fire, Neon, Iron, Minimal, Bold, Progress, and Story. Share to Instagram, send to your coach, post in your group chat.

Your PRs, framed like trophies.

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1REP PRO (One-Time Purchase)

No subscriptions. Pay once, own forever.

• Deep Analytics — linear strength projections, goal tracking, progress rate
• Smart deload suggestions when your numbers stall
• All 9 share templates unlocked
• Full data export
• All themes and accent colors

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BUILT FOR LIFTERS

Powerlifters tracking the big three. Olympic lifters measuring the snatch and clean & jerk. Bodybuilders chasing pump PRs. CrossFitters logging every metcon. Beginners who just hit bodyweight bench for the first time.

If you care about getting stronger, 1Rep is built for you.

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30+ MILESTONES. EVERY ONE EARNED.

Hit the 2-plate bench club. 3-plate squat. 4-plate deadlift. Bodyweight ratios. PR streaks. We'll tell you when you've made history — even if it's just your history.

The gym forgets. 1Rep remembers.

Start logging. Start progressing. Start owning your numbers.

Download 1Rep today.