# One Rep Max - 1RM Calculator — Deadlift, Benchpress, Squat + > Strength training calculator for tracking one rep max and progress. (iPhone/iPad app by App Ktchn Ltd.) - Source: https://appshunter.io/ios/app/one-rep-max-1rm-calculator/id1367332610 (this page in markdown: same URL + `.md`) - Developer: [App Ktchn Ltd](https://appshunter.io/developer/870718126) - Category: Health & Fitness, Sports - Price: Free with in-app purchases - Rating: 5.00/5 from 1 App Store ratings · 3 written reviews indexed - Age rating: 17+ - Requires: iOS 11.0 · 13 MB - Languages: American English - Released: 2018-04-04 - Data updated: 2026-08-15 - Monetization: free with in-app purchases - User reviews in markdown: https://appshunter.io/ios/app/one-rep-max-1rm-calculator/id1367332610/reviews.md ## What is One Rep Max? Calculate your One Rep Max from 2-12 max effort performed reps. Features: - Quickly & easily calculate your One Rep Max - Save calculations to track progress - View your 1RM percentages e.g. "70% one rep max" - Log multiple exercise types (Deadlift, benchpress, front squat etc.) - Create & add your own exercise types - View max weight history by exercise type - View charts showing your strength gains over time - Select a custom date when adding entries - Choose Imperial or Metric units ## Key features - Calculate One Rep Max - Save and track progress - View 1RM percentages - Log multiple exercise types - Create custom exercises - View strength gain charts - Imperial or Metric units ## Pricing and in-app purchases Base price: Free. **One-time purchases** | Purchase | Price | Type | | --- | --- | --- | | 1RM Pro Lifetime | $4.99 | one-time | ## Recent user reviews (3 of 3) All indexed reviews: https://appshunter.io/ios/app/one-rep-max-1rm-calculator/id1367332610/reviews.md ### 1/5 — Sneaky £5 charge *2019-09-26, version 1.05* Annoyed: they let you use it for a month. Then on day 30 tell you it was a trial and you need to pay £5 to continue. So it’s a months worth of records wasted unless you buy. ### 5/5 — Simple and very very good *2019-04-29, version 1.05* Really simple, use it to track top set per session and roughly track my 1rm over time. Easy and useful for any serious gym goer ### 3/5 — Calendar *2018-05-08* The apps is good but it would be nice to see which exercises were performed by date. ## Frequently asked questions about One Rep Max ### How does One Rep Max calculate my 1RM? One Rep Max calculates your One Rep Max (1RM) based on 2 to 12 max effort reps performed for an exercise. It uses established formulas to estimate your maximum single lift. ### Can I track progress with One Rep Max? Yes, you can save your calculations to track your progress over time. The app allows you to view your max weight history by exercise type and see charts of your strength gains. ### What exercises can I log with One Rep Max? You can log multiple standard exercise types like Deadlift, Benchpress, and Squat. Additionally, you have the flexibility to create and add your own custom exercise types. ### Does One Rep Max support different units? Yes, One Rep Max allows you to choose between Imperial or Metric units for your weight and calculations, catering to your preference. ### Is One Rep Max suitable for all ages? One Rep Max has an age rating of 17+, indicating it is intended for adult users. This is common for apps dealing with fitness and strength training data. ### How often is One Rep Max updated? The app was last updated on April 13, 2018, with version 1.05. While updates have not been frequent recently, the core functionality remains stable for its intended purpose. ### What devices can I use One Rep Max on? One Rep Max is available for iPhone and iPad devices. It is designed to work across Apple's mobile ecosystem. ### Does One Rep Max have ads? No, One Rep Max does not contain advertisements. This provides an uninterrupted experience for users focused on their training data. ## Version history (last 2 releases) ### 1.05 — 2018-04-13 This app has been updated by Apple to display the Apple Watch app icon. Added ability to reorder & delete exercise types ### 1.0 — 2018-04-03 No release notes. ## Apps similar to One Rep Max | App | Rating | Price | Category | | --- | --- | --- | --- | | [My 1 Rep Max](https://appshunter.io/ios/app/my-1-rep-max/id1317637753) | 4.4 (111) | Free | Health & Fitness | | [1RM Percentage Calculator](https://appshunter.io/ios/app/1rm-percentage-calculator/id6451496905) | 5.0 (3) | Free | Health & Fitness | | [One Rep](https://appshunter.io/ios/app/one-rep/id6479545021) | — | Free | Health & Fitness | | [One Rep Max: 1RM Calculator](https://appshunter.io/ios/app/one-rep-max-1rm-calculator/id950621710) | 4.4 (178) | Free | Health & Fitness | | [1RM - One Rep Max Calculator](https://appshunter.io/ios/app/1rm-one-rep-max-calculator/id6480014506) | — | Free | Health & Fitness | | [1RM Calculator](https://appshunter.io/ios/app/1rm-calculator/id1566775126) | 4.9 (109) | Free | Health & Fitness | ## More apps by App Ktchn Ltd - [Healthy Dessert Recipes](https://appshunter.io/ios/app/healthy-dessert-recipes/id611894044) - [Stretching, Flexibility: Flex](https://appshunter.io/ios/app/stretching-flexibility-flex/id698583549) - [5:2 Fast Diet Calculator, Tracker & Planner](https://appshunter.io/ios/app/52-fast-diet-calculator-tracker-and-planner/id700580184) - [Women's Style - Fashion Finder](https://appshunter.io/ios/app/womens-style-fashion-finder/id771822793) - [Old Skool & Anthems Radio Player](https://appshunter.io/ios/app/old-skool-and-anthems-radio-player/id845257998) - [VoiceNotes© Voice Recorder](https://appshunter.io/ios/app/voicenotes-voice-recorder/id856841885) All apps by App Ktchn Ltd: https://appshunter.io/developer/870718126 ## Related topics [1rm weight lifting rep max](https://appshunter.io/ios/topics/1rm-weight-lifting-rep-max) · [bench rep](https://appshunter.io/ios/topics/bench-rep) --- *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 2026-08-15.*