1RM Calculator: One Rep Max1.8.0 - Google Play
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Publisher Description
Estimate your one rep max from weight, reps and RPE. Save lifts by exercise.
Estimate your one rep max (1RM) from any set. Enter the weight and reps you lifted, add RPE if you track it, and get your estimated max in seconds.
FEATURES
- 1RM calculator with optional RPE: reps left in the tank are counted, so 10 reps at RPE 7 is treated like a 13-rep max
- Transparent formulas: your estimate is the average of Epley, Brzycki (up to 12 reps), Wathan, and Mayhew
- Estimated rep maxes from 2 to 12 reps, each shown as a percentage of your 1RM, for planning working sets
- Save results to your history by exercise, including your own custom exercises
- Edit or backdate saved records
- Export your history as CSV
- kg or lbs, light or dark theme
- 9 languages
- No account needed: your records stay on your device
PRO
- 1RM progress chart for each exercise
- Rep max table with your best recorded set for each rep count
- No ads
Pro is available as a monthly or yearly subscription, or as a one-time lifetime purchase. Subscriptions renew automatically until canceled in your store account settings.
Your 1RM is an estimate, not a tested max. Estimates are most reliable at lower reps.
Terms: https://1rm.workoutwise.app/legal/terms/
Privacy Policy: https://1rm.workoutwise.app/legal/privacy-policy/
About 1RM Calculator: One Rep Max
The company that develops 1RM Calculator: One Rep Max is Yuri Koshiishi. The latest version released by its developer is 1.8.0.
To install 1RM Calculator: One Rep Max on your Android device, just click the green Continue To App button above to start the installation process. The app is listed on our website since 2026-10-04 and was downloaded 0 times. We have already checked if the download link is safe, however for your own protection we recommend that you scan the downloaded app with your antivirus. Your antivirus may detect the 1RM Calculator: One Rep Max as malware as malware if the download link to com.yurikoshiishi.one_rm_calculator is broken.
How to install 1RM Calculator: One Rep Max on your Android device:
- Click on the Continue To App button on our website. This will redirect you to Google Play.
- Once the 1RM Calculator: One Rep Max is shown in the Google Play listing of your Android device, you can start its download and installation. Tap on the Install button located below the search bar and to the right of the app icon.
- A pop-up window with the permissions required by 1RM Calculator: One Rep Max will be shown. Click on Accept to continue the process.
- 1RM Calculator: One Rep Max will be downloaded onto your device, displaying a progress. Once the download completes, the installation will start and you'll get a notification after the installation is finished.
Program Details
System requirements
Download information
Pricing
Version History
version 1.8.0
posted on 2026-10-04
- Training weights: Calculate working weights from a % of your 1RM or RPE, and see which plates to load on the bar.
- Tap your 1RM estimate to see how it was calculated and how reliable it is.
- Tap any record in History to see its estimated rep maxes.
version 1.7.1
posted on 2026-09-28
- Edit or backdate saved records: tap any history entry.
- Export your history as CSV from Settings.
- kg/lbs fixes: results keep their unit, and Rep Max and 1RM Progress compare kg and lbs correctly.
- After changing inputs, recalculate before saving so records match what you entered.
- Clearer save errors, and updates for the latest iOS and Android.
version 1.6.2
posted on 2025-02-12
- Expanded language support: French, Portuguese, German, Italian, Russian, Korean.
version 1.6.1
posted on 2025-02-05
- Added a search input to filter exercises.
- Added a chart to show 1RM progress over time.
- Added a table to show rep maxes for each lift.
version 1.4.0
posted on 2024-10-25
- Minor improvements & bug fixes.
version 1.3.2
posted on 2024-04-29
- Improved 1RM calculation logic.
- Added Spanish language support.
version 1.3.0
posted on 2023-08-26
- Added RPEs with decimals.
- Improved 1RM calculation logic.
Disclaimer
Official Google Play Link
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