Best One Rep Max Calculator Apps

248+ iOS apps curated and reviewed

4.5 avg rating
19 free apps
Updated September 2026

Finding the right one rep max calculator apps can be overwhelming with so many options. We've analyzed 248+ apps to bring you the best choices for 2026, from free options to premium solutions with advanced features.

Compare top One Rep Max Calculator Apps (September 2026)

#AppPriceRatingAdsIn-App PurchasesUpdated
11RM Calculator1RM CalculatorFree4.9★ (109)NoYesSep 2026
2My 1 Rep MaxMy 1 Rep MaxFree4.4★ (118)NoYesSep 2026
3One Rep Max: 1RM CalculatorOne Rep Max: 1RM CalculatorFree4.4★ (178)YesYesSep 2026
41RM Calculator - One Rep Max1RM Calculator - One Rep MaxFree4.5★ (222)NoYesSep 2026
51 Rep Max Calc1 Rep Max CalcFree4.5★ (11)NoNoSep 2026
6MaxLift - 1RM CalculatorMaxLift - 1RM CalculatorFree—YesNoAug 2026
7Simple One-Rep-Max CalculatorSimple One-Rep-Max Calculator$0.994.5★ (2)NoNoSep 2026
8Rep Max CalculatorRep Max CalculatorFree5.0★ (3)NoYesAug 2026

Top Picks for One Rep Max Calculator

One Rep Max: 1RM Calculator#3

One Rep Max: 1RM Calculator by Charles Vanderhoff

Strength Tracker & Gym PR Tool
Worth Considering
💪 Health & Fitness
4.4😞(178 ratings)
FreeAdsIn-App Purchases
One Rep Max: 1RM Calculator screenshot 1
One Rep Max: 1RM Calculator screenshot 2
One Rep Max: 1RM Calculator screenshot 3
One Rep Max: 1RM Calculator screenshot 4
One Rep Max: 1RM Calculator screenshot 5
One Rep Max: 1RM Calculator screenshot 6

Safely estimate your maximum lift potential for various strength exercises using scientific formulas. Track your progress visually, set goals, and fine-tune estimates with perceived exertion. Ideal for powerlifters, CrossFit athletes, and strength enthusiasts.

What We Love

  • 👍 Easy to use interface
  • 📊 Tracks progress with charts
  • ➕ Plate calculator bonus feature
  • 📈 Supports multiple 1RM formulas
  • 💪 Helpful for tracking RMs
  • ✅ Calculates 1RM accurately
  • 🆓 Free to use (historically)
  • ✨ Simple and quick
  • 🚀 Fast and easy
  • 💯 Best 1RM app
  • 💡 Addition of 2-10RM
  • ⚖️ Weightlifting calculator
  • 📈 Graphs for improvements
  • 💯 Accurate calculations
  • ✅ Works as intended
  • 💯 Best 1RM app on iOS
  • 💯 Straight forward
  • 👍 Great for tracking maxes
  • 💯 Very useful as is
  • 💯 Best way to track 1RM
  • 💯 User friendly and accurate
  • 💯 Simple and handy

Room to Improve

  • 💰 Subscription required for features
  • 💸 Features moved behind paywall
  • 😩 Useless without subscription
  • 🚫 Basic features now paid
  • 💸 High subscription cost
  • 😠 Forced ads for basic features
  • 📉 Graphing feature now Pro only
  • 🤔 Unclear what was purchased
  • 💸 Not worth the cost
  • 📉 Deleted lifting history
  • 📉 Lost all logs with update
  • 🚫 Weight limit restriction
  • 📉 Poor interface
  • 🐛 Buggy with dates and lifts
  • 👎 Horribly user-unfriendly
  • 🐛 Reloads excessively
  • 🐛 Wonky and now dead
  • 🐛 Complicated and too much offered
  • 🐛 Not intuitive for tracking
  • 🐛 Buggy about dates and lifts
  • 🐛 Weight limit restriction
  • 🐛 Max weight limit too low
  • 🐛 Not useful for intended audience
  • 🐛 Cannot select other lifts
  • 🐛 Only logs back squats

More One Rep Max Calculator apps to explore

FAQ about One Rep Max Calculator

What are the best one rep max calculator apps for iPhone?
1RM Calculator tops our one rep max calculator apps ranking as of September 2026, with a 4.9-star average from 109 App Store ratings, and it's free to download.
Yes — 19 of the top one rep max calculator apps we rank are free to download, including 1RM Calculator and My 1 Rep Max.
1RM Calculator has no ads and offers in-app purchases, according to its App Store listing as of September 2026.
We track 248+ one rep max calculator apps on the iOS App Store as of September 2026, ranked by rating, recency, and analysis of real user reviews.
This app is designed to help you calculate your one-rep max (1RM) strength. It allows you to input your lifting data, optionally using Rate of Perceived Exertion (RPE), to estimate your maximum weight for a single repetition. You can also estimate your rep maxes for various rep ranges based on your calculated 1RM.
The app calculates your 1RM based on the weight you lift and the number of repetitions you perform. You can optionally include your RPE to refine the calculation. It also provides estimations for rep maxes, allowing you to see how much you might be able to lift for 2 to 12 reps.