1RM Calculator: One Rep Max
1RM Calculator: One Rep Max is made and published by Yuri Koshiishi. AppBrain is an independent app data site and isn't affiliated with Yuri Koshiishi. The app name, icon, screenshots and description belong to Yuri Koshiishi and are shown as published on Google Play.
AppBrain's verdict
EstablishedLoved by users- Total installs
- 60 thousand
- Rating on Google Play
- 4.78
- 571 ratings
- Last updated
- October 4, 2026
1RM Calculator: One Rep Max has 60 thousand installs. Users love it: 4.8 stars from 571 ratings.
Installs
Tracked by AppBrain- Last 30 days
- 590
- Per day
- 20
- 30-day average
- Play install range
- 50+ thousand
- Launched
- April 2021
Installs over time
1RM Calculator: One Rep Max has been installed 60 thousand times. Over the past 30 days, it averaged 20 installs per day.
Rankings
Google Play top chartsGoogle Play Rankings for 1RM Calculator: One Rep Max
Competitors
Similar apps and more from Yuri KoshiishiAlternatives to 1RM Calculator: One Rep Max
More from Yuri Koshiishi
Releases
Updates seen on Google Play- Version
- 1.8.0
- Launched
- April 2021
User feedback
Ratings and reviews on Google PlayGoogle Play Rating history and histogram
Comments on 1RM Calculator: One Rep Max for Android
Technology
Found in the app by AppBrain- Ads
- No ads
- Price
- Free
- Libraries
- 9
- App size
- 21.4 MB
- Needs Android
- 4.1+
- Content rating
- Everyone
Technologies used by 1RM Calculator: One Rep Max
About the app and developer
About 1RM Calculator: One Rep Max
1RM Calculator: One Rep Max is a health & fitness app developed by Yuri Koshiishi.
Install Statistics
1RM Calculator: One Rep Max has been installed 60 thousand times. In the last 30 days, the app was installed 590 times.
User Ratings
1RM Calculator: One Rep Max is rated 4.78 out of 5 stars. The rating is based on 570 ratings.
App Information
1RM Calculator: One Rep Max is freely available from Google Play. The app size is 21.39 MB. The latest version available is 1.8.0. The last update was on October 4, 2026.
Technical Requirements
1RM Calculator: One Rep Max requires Android 4.1+ or higher. The app has a content rating of Everyone. The app has been available on Google Play since April 2021.
App Performance Report
Get a detailed PDF report for 1RM Calculator: One Rep Max with download trends, rating history, and key performance statistics — useful for competitive research or tracking your own app. Learn more
Get PDF Report — $29Developer information for Yuri Koshiishi
Frequently asked questions about 1RM Calculator: One Rep Max
Is 1RM Calculator: One Rep Max free?
Yes. 1RM Calculator: One Rep Max is free on Google Play.
Is 1RM Calculator: One Rep Max still available?
Yes. 1RM Calculator: One Rep Max is on Google Play, and the last update we saw was on October 4, 2026.
Does 1RM Calculator: One Rep Max contain ads?
No. Google Play does not list 1RM Calculator: One Rep Max as containing ads.
What Android version does 1RM Calculator: One Rep Max require?
1RM Calculator: One Rep Max runs on Android 4.1 and higher.
How large is 1RM Calculator: One Rep Max?
1RM Calculator: One Rep Max is 21.39 MB.
Is 1RM Calculator: One Rep Max suitable for children?
Google Play rates the content of 1RM Calculator: One Rep Max as suitable for everyone.
How many times has 1RM Calculator: One Rep Max been installed?
Google Play lists 50,000+ installs for 1RM Calculator: One Rep Max.
How do people rate 1RM Calculator: One Rep Max?
1RM Calculator: One Rep Max scores 4.78 out of 5 stars, from 571 ratings on Google Play.
Who made 1RM Calculator: One Rep Max?
1RM Calculator: One Rep Max was developed by Yuri Koshiishi. It is listed in the health & fitness category on Google Play.
What are the best alternatives to 1RM Calculator: One Rep Max?
People looking at 1RM Calculator: One Rep Max also look at these health & fitness apps: Rep Max Tools - 1RM Calculator, One Rep Max: 1RM Calculator, Reps - Workout Tracker Gym Log, WeightLifted, World of Lifting: Gym Tracker.
Store listing
By Yuri Koshiishi, from Google Play“Estimate your one rep max from weight, reps and RPE. Save lifts by exercise.”
Description by Yuri Koshiishi Written by the developer, not by AppBrain. Click to read.
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/
Recent changes:
- 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.