# One Rep Max Calculator - 1RM > Strength training calculator for one rep max (1RM) and workout percentages. (iPhone/iPad app by Ross Sullivan.) - Source: https://appshunter.io/ios/app/one-rep-max-calculator-1rm/id1209114916 (this page in markdown: same URL + `.md`) - Developer: [Ross Sullivan](https://appshunter.io/developer/1142251046) - Category: Health & Fitness, Utilities - Price: Free - Rating: 3.00/5 from 6 App Store ratings · 5 written reviews indexed - Age rating: 4+ - Requires: iOS 10.2 · 21 MB - Languages: English - Released: 2017-03-01 - Data updated: 2026-06-10 - Monetization: free - User reviews in markdown: https://appshunter.io/ios/app/one-rep-max-calculator-1rm/id1209114916/reviews.md ## What is One Rep Max Calculator? This app can be used to calculate one rep max (1RM) for bench press, squat, deadlift, overhead press, military press, and other various exercises. There is also a chart showing the percents of the calculated one rep max. This app is designed to help lifters make GAINS, so get to lifting bros. FEATURES: -Calculate One Rep Max (1RM) -Weight Percentage Chart for more organized workouts -Multiple Equations to calculate the 1RM for more customization -Awesome Black and Blue Color scheme -Lifters that use this app have been proven to lift more (Make more gains) -Easy to use -5 pound increments for greater accuracy ## Key features - Calculate One Rep Max (1RM) - Weight Percentage Chart - Multiple Calculation Equations - Supports various exercises - Easy to use interface - 5 pound increments ## Recent user reviews (5 of 5) All indexed reviews: https://appshunter.io/ios/app/one-rep-max-calculator-1rm/id1209114916/reviews.md ### 1/5 — Fix *2020-11-09, version 1.1.1* Can’t change the reps the blue thing is in the way fix that then this app works perfectly ### 2/5 — Can’t change the reps!! *2020-01-23, version 1.1.1* App worked great until I switched phones(iPhone 6+ to 11) and got the update. The calculated max bar is over the area where you input the reps. Please fix. ### 4/5 — Great but has a glitch *2019-06-20, version 1.1.1* It currently has a glitch where the 1 RM covers up the buttons where you enter the reps ### 1/5 — Only for Americans *2019-02-06* Minutia. You can't even change it to the Metric system. It still uses that archaic imperial system. Also it has ads on it for one of the most basic settings I have ever seen. Load of tosh. There are much better ones out there that allow you to change from lbs to KG! ### 5/5 — Does the job! *2018-03-05, version 1.1.1* The app does its job elegantly. It would be nice to go beyond 15 reps. The latest update set the rep counter behind the 1RM banner and inaccessible. Help, Ross! ## Frequently asked questions about One Rep Max Calculator ### What exercises can I calculate the 1RM for with One Rep Max Calculator? One Rep Max Calculator allows you to calculate your one rep max for exercises such as bench press, squat, deadlift, overhead press, military press, and other various exercises. ### Does One Rep Max Calculator have ads? No, One Rep Max Calculator does not contain advertisements. It is a completely ad-free experience for users. ### What is the rating for One Rep Max Calculator? One Rep Max Calculator has a rating of 3.0 stars based on 6 user ratings. ### How often is One Rep Max Calculator updated? The latest version of One Rep Max Calculator is 1.1.1, which was last updated on March 3, 2018. The app was initially released on March 1, 2017. ### What devices does One Rep Max Calculator support? One Rep Max Calculator is supported on iPhones and iPods. ### What age rating is One Rep Max Calculator? One Rep Max Calculator has an age rating of 4+, making it suitable for a wide range of users. ### Can I customize the 1RM calculation in One Rep Max Calculator? Yes, One Rep Max Calculator offers multiple equations to calculate the 1RM, providing more customization for your training needs. ### What is the weight increment accuracy in One Rep Max Calculator? One Rep Max Calculator uses 5-pound increments for greater accuracy in its calculations, helping you track your progress precisely. ## Version history (last 3 releases) ### 1.1.1 — 2018-03-03 This app has been updated by Apple to display the Apple Watch app icon. -Updated launch screen -Fixed issue where settings tab would not allow user to return to main screen ### 1.1 — 2017-03-14 Tap the weight text to enter a number instead of using the arrows App now saves which equation so you don't have to change it each time MORE GAINS ### 1.0 — 2017-03-01 No release notes. ## Apps similar to One Rep Max Calculator | App | Rating | Price | Category | | --- | --- | --- | --- | | [Wash your hands now](https://appshunter.io/ios/app/wash-your-hands-now/id1503634740) | 4.2 (33) | $0.99 | Health & Fitness | | [Heart Rate Monitor-Plus1Health](https://appshunter.io/ios/app/heart-rate-monitor-plus1health/id1535822660) | 4.6 (1,259) | Free | Health & Fitness | | [One Rep Max Calculator - (1RM)](https://appshunter.io/ios/app/one-rep-max-calculator-1rm/id1596587580) | 5.0 (14) | Free | Health & Fitness | | [1RM Calculator](https://appshunter.io/ios/app/1rm-calculator/id1566775126) | 4.9 (86) | Free | Health & Fitness | | [Gym Tracker: Liftlog+](https://appshunter.io/ios/app/gym-tracker-liftlog-plus/id1493278836) | 4.7 (53) | Free | Health & Fitness | | [MaxLift - 1RM Calculator](https://appshunter.io/ios/app/maxlift-1rm-calculator/id6447921919) | — | Free | Health & Fitness | ## More apps by Ross Sullivan - [Grocery List - Best Shopping App - Healthy Food](https://appshunter.io/ios/app/grocery-list-best-shopping-app-healthy-food/id1142258500) - [Livestock Record - Show Tracker for Livestock Show](https://appshunter.io/ios/app/livestock-record-show-tracker-for-livestock-show/id1144270538) - [RGB Color App - RGB Value Converter Hex Color Code](https://appshunter.io/ios/app/rgb-color-app-rgb-value-converter-hex-color-code/id1195359179) - [Rainbow Calculator - Colorful Calculator Plus](https://appshunter.io/ios/app/rainbow-calculator-colorful-calculator-plus/id1195435171) - [Loan Calculator - Mortgage Calculator - Easy Calc](https://appshunter.io/ios/app/loan-calculator-mortgage-calculator-easy-calc/id1197519137) - [BMR Calculator - Basal Metabolic Rate Calc Resting](https://appshunter.io/ios/app/bmr-calculator-basal-metabolic-rate-calc-resting/id1203064465) All apps by Ross Sullivan: https://appshunter.io/developer/1142251046 --- *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 2026-06-10.*