# Ultimate Rep Max Calculator — Science-Based Strength Tools

> Science-Based Strength Tools (iPhone/iPad app by AGX Performance.)

- Source: https://appshunter.io/ios/app/ultimate-rep-max-calculator/id6758861585 (this page in markdown: same URL + `.md`)
- Developer: [AGX Performance](https://appshunter.io/developer/1873728388)
- Category: Health & Fitness, Lifestyle
- Price: $0.99
- Age rating: 4+
- Requires: iOS 13.0 · 3 MB
- Languages: American English
- Released: 2026-03-10
- Data updated: 2026-05-14
- User reviews in markdown: https://appshunter.io/ios/app/ultimate-rep-max-calculator/id6758861585/reviews.md

## What is Ultimate Rep Max Calculator?

Stop guessing your max. Start knowing it.

Ultimate Rep Max Calculator uses 6 scientifically-validated formulas to estimate your one-rep max from ANY set you perform—not just heavy singles. Enter multiple sets with varying weights, and the app automatically identifies your best 1RM estimate.

ACCURATE 1RM CALCULATIONS
• 6 proven formulas: Epley, Brzycki, Wathan, Lombardi, Mayhew & O'Conner
• RPE/RIR adjustment for sets not taken to failure
• Multi-set input supports pyramids, ramp-ups, and drop sets
• Calculates from your best-performing set automatically

RM MATRIX
• See recommended weights for every rep range (1-20 reps)
• Color-coded training zones: Strength, Hypertrophy, Endurance
• Visual chart shows the full strength curve

FATIGUE MATRIX
• Understand how rest periods affect your performance
• Project reps across 5 sets at different rest intervals
• Optimize your rest times for your goals

SMART WARM-UP CALCULATOR
• Auto-generated warm-up pyramid based on your working weight
• Progressive loading prepares muscles and CNS
• Never walk into a heavy set cold again

INTENSITY TECHNIQUES
• Calculate drop set progressions and projected reps
• Rest-pause technique planning
• Compare effective reps across training methods

REVERSE CALCULATOR
• Input your target sets, reps, and rest time
• Get the exact weight recommendation
• Perfect for programming and deload planning

SAVE & COMPARE
• Save exercises to track your maxes over time
• Compare lifts across your training history
• All data stored locally—your privacy protected

Built for serious lifters by AGX Performance. No subscriptions. No ads. No data collection. Just the tools you need to get stronger.


## Version history (last 1 release)

### 1.0 — 2026-03-10

No release notes.

## More apps by AGX Performance

- [Ultimate Macro Calculator](https://appshunter.io/ios/app/ultimate-macro-calculator/id6758571463)

All apps by AGX Performance: https://appshunter.io/developer/1873728388

## Related topics

[agxtool](https://appshunter.io/ios/topics/agxtool)

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*Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-05-14.*