One Rep Max: 1RM Calculator4.0.24 - App Store

Stronger Training, Smarter Progress

One Rep Max helps you safely and accurately determine your maximum lift potential for bench press, deadlift, squat, and any other strength exercise - without risking injury.

Key Features:
. Precise Calculations - 7 scientific formulas for accurate strength predictions: Epley, Brzycki, Lombardi, Mayhew, McGlothin, O'Conner, Wathan
. RPE Integration - Factor in Rate of Perceived Exertion to fine-tune your max estimates based on how difficult sets feel
. Custom Exercise Tracking - Create and monitor any lift that matters to you
. Visual Progress - Beautiful graphs show your strength journey over time
. Percentage Charts - Quick reference guide for training percentages
. Goal Setting - Set targets and track your path to reaching them

Perfect for:
. Powerlifters optimizing their training cycles
. CrossFit athletes tracking multiple movement patterns
. Olympic weightlifters monitoring progress
. Strength enthusiasts at any level

Advanced Features:
. Choose between multiple calculation formulas for different lift types
. Track unlimited exercises with custom notes
. Rate of Perceived Exertion (RPE) - Fine-tune your 1RM estimates based on how difficult sets feel
. Analyze detailed statistics including volume and frequency
. Set and monitor progress toward specific strength goals

The Science Behind The Numbers:
Our app employs multiple validated formulas to estimate your one-rep maximum based on your performance with submaximal weights. This provides you with safe strength targets before attempting potentially risky maximal lifts.

Safety Note:
Heavy weightlifting should always be performed with proper technique and appropriate spotting. This app provides estimates based on scientific formulas, but individual performance may vary based on experience level and training history.

Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/

Version History Stronger foundations for your strongest lifts. Upgraded to the latest iOS frameworks with refreshed sign-in. Your lifts and maxes carry right over. Go chase that next PR. 4.0.24 Sep 29 A smoother way to log. We've cleaned up the flow throughout the app, so adding a lift, updating a max, and checking your history all take fewer taps and less hunting around. Clearer screens, the numbers that matter easier to read at a glance, and less scrolling to get where you're going. Plus the usual polish, performance improvements, and bug fixes. 4.0.22 Jul 30 Back up your lifts. You can now sign in to securely back up your workout data and keep it synced across all your devices. Plus bug fixes and performance improvements. 4.0.21 Jun 28 Back up your lifts. You can now sign in to securely back up your workout data and keep it synced across all your devices. Plus bug fixes and performance improvements. 4.0.18 Jun 24 Try Pro free. Start a free trial and unlock unlimited workout logs, advanced analytics, the plate calculator, and unlimited rep-max calculations. Keep chasing those max lifts! 4.0.17 Jun 19 Faster PRs and cleaner lifts. The 1RM calculator now runs smoother on iOS 26, with improved charts for tracking bench press, squat, and deadlift progress. Brzycki and RPE-based max lift estimates are more accurate, and the gym log loads faster whether you're powerlifting, doing CrossFit, or barbell training. Keep chasing those max lifts! 4.0.16 Apr 28 Faster PRs and cleaner lifts. The 1RM calculator now runs smoother on iOS 26, with improved charts for tracking bench press, squat, and deadlift progress. Brzycki and RPE-based max lift estimates are more accurate, and the gym log loads faster whether you're powerlifting, doing CrossFit, or barbell training. Keep chasing those max lifts! 4.0.15 Apr 22 Faster PRs and cleaner lifts. The 1RM calculator now runs smoother on iOS 26, with improved charts for tracking bench press, squat, and deadlift progress. Brzycki and RPE-based max lift estimates are more accurate, and the gym log loads faster whether you're powerlifting, doing CrossFit, or barbell training. Keep chasing those max lifts! 4.0.14 Apr 21 Faster PRs and cleaner lifts. The 1RM calculator now runs smoother on iOS 26, with improved charts for tracking bench press, squat, and deadlift progress. Brzycki and RPE-based max lift estimates are more accurate, and the gym log loads faster whether you're powerlifting, doing CrossFit, or barbell training. Keep chasing those max lifts! 4.0.13 Apr 20 We've made it easier than ever to get started with One Rep Max.

• Improved onboarding flow to get you lifting faster
• New exercises automatically appear on your progress charts
• Cleaner, ad-free interface throughout the app 4.0.12 Jan 4 • NEW: Export exercise logs to CSV for backup or analysis
• NEW: 0.25kg and 0.125kg micro plates in plate calculator
• Fixed display issues with large text sizes
• Stability improvements 4.0.11 Jan 2 We're always working to make your lifting sessions easier and more efficient. Here's what's new:

- New quick-fill button on lift history screen lets you instantly populate the calculator with reps, weight, and RPE from your previous lifts
- Improved plate calculator now suggests weights closer to the target weight
- Fixed display issue where weights showed too many decimal places

Happy lifting! 4.0.10 11/24/2025 We're always working to make your lifting sessions easier and more efficient. Here's what's new:

- New quick-fill button on lift history screen lets you instantly populate the calculator with reps, weight, and RPE from your previous lifts
- Improved plate calculator now suggests weights closer to the target weight
- Fixed display issue where weights showed too many decimal places

Happy lifting! 4.0.9 11/12/2025 New! Visual Plate Calculator!

See exactly which plates to load on your barbell with the new interactive plate calculator. No more mental math during your workouts!

Key features:
- Visual representation of plates on both sides
- Works with pounds and kilograms
- Pro users can customize their plate inventory
- Smart calculations to match your available weights

Whether you're warming up or going for a PR, load your bar with confidence. Happy lifting! 4.0.8 05/06/2025 New! Visual Plate Calculator!

See exactly which plates to load on your barbell with the new interactive plate calculator. No more mental math during your workouts!

Key features:
- Visual representation of plates on both sides
- Works with pounds and kilograms
- Pro users can customize their plate inventory
- Smart calculations to match your available weights

Whether you're warming up or going for a PR, load your bar with confidence. Happy lifting! 4.0.7 04/17/2025 New! RPE-Adjusted 1RMs!

Take control of your training with RPE-based calculations. Fine-tune your one-rep max estimates by effort — not just weight. Perfect for autoregulated training.

Don't need RPE? You can easily disable this feature in the app settings page! 4.0.6 04/04/2025 • NEW: Real-time one-rep max animations — watch your max count up dynamically with sleek, odometer-style flair.
• ENHANCED: Haptic feedback when logging lifts adds a premium, tactile experience to every session.
• OPTIMIZED: Smoother animations and improved rendering for faster, more responsive performance.

Feel the difference in every tap and rep — this update brings your strength journey to life with visual polish, tactile feedback, and performance that keeps up with your gains. 4.0.5 04/01/2025 • NEW: Analysis tab with interactive charts to visualize your strength progress over time - available for all users with example data for non-subscribers
• INSIGHTS: Powerful filtering tools let you focus on specific exercises and time periods (2-week, monthly, 6-month, yearly) to track exactly what matters to you
• IMPROVED EXPERIENCE: Enhanced visuals with better readability, vertical swipe gestures for faster logging, and optimized interface in both light and dark modes

This update delivers a completely new way to understand your lifting progress! See your strength gains like never before with our most requested feature - progress tracking charts. 4.0.4 03/29/2025 • ENHANCED CHARTS: Improved visualization with smart date-based x-axis that automatically adjusts to your training frequency
• TIME INTELLIGENCE: New hourly, daily, weekly, monthly, and yearly view options for detailed progress tracking
• GOAL TRACKING: Improved goal line visualization for clearer progress comparison
• PERFORMANCE: Fixed several issues that could cause crashes on older devices
• UI IMPROVEMENTS: Enhanced dark mode rendering and smoother animations throughout the app

This update focuses on improving how you visualize your lifting progress. Thanks for your continued feedback and support! 4.0.3 03/26/2025 Major Update!

One Rep Max has been rebuilt from the ground up with powerful new features:

• NEW 1RM FORMULAS: Added 6 scientific formulas for maximum accuracy: Brzycki, Lombardi, Mayhew, McGlothin, O'Conner, Wathan
• SMART SELECTOR: Recommends the best formula for your specific exercise type
• REDESIGNED UI: Fresh, modern interface with dark mode optimized for gym environments
• ENHANCED ANALYTICS: Detailed progression insights and volume tracking
• PERFORMANCE BOOST: Faster calculations, smaller app size, and improved battery life
• MULTILINGUAL: Now available in 10 languages

Thanks for your support! This release represents months of development based on your feedback. Lift on! 4.0.2 03/24/2025 Version 4.0 - Major Update!

One Rep Max has been rebuilt from the ground up with powerful new features:

• NEW 1RM FORMULAS: Added 6 scientific formulas for maximum accuracy: Brzycki, Lombardi, Mayhew, McGlothin, O'Conner, Wathan
• SMART SELECTOR: Recommends the best formula for your specific exercise type
• REDESIGNED UI: Fresh, modern interface with dark mode optimized for gym environments
• ENHANCED ANALYTICS: Detailed progression insights and volume tracking
• PERFORMANCE BOOST: Faster calculations, smaller app size, and improved battery life
• MULTILINGUAL: Now available in 10 languages

Thanks for your support! This release represents months of development based on your feedback. Lift on! 4.0.0 03/20/2025 - Bug fixes and performance improvements

Let us know if we can do anything to make the app better for you! Please be sure to review the app so others can find it when searching. 3.1.8 07/26/2017 - Bug fixes and performance improvements

Let us know if we can do anything to make the app better for you! Please be sure to review the app so others can find it when searching. 3.1.7 07/01/2017 - Bug fixes and performance improvements

Let us know if we can do anything to make the app better for you! Please be sure to review the app so others can find it when searching. 3.1.6 05/25/2017 - Improved performance of lift log sorting when tapping column headers
- Misc improvements

Let us know if we can do anything to make the app better for you! Please be sure to review the app so others can find it when searching. 3.1.5 03/12/2017