1RM Calculator Downloads & Revenue1RM Calculator: One Rep Max · App Store & Google Play
1RM Calculator: One Rep Max by Yuri Koshiishi is on App Store and Google Play. Active Users (MAU & DAU), Downloads, rankings, keywords, revenue, and rating totals.
1RM Calculator: One Rep Max update history & changes
Last change · 8 events since 9 May 2021Full timeline ↓🆕AndroidFirst spotted by AppInsider📦iOSUpdated to version 1.8.0📦AndroidVersion 1.8.0📈iOSDropped out of every chart we track🆕iOSFirst spotted by AppInsider📦iOSVersion 1.7.1🆕iOSReleased on the App Store🆕AndroidReleased on Google Play
Full timeline · 8 events
- 🆕1RM Calculator: One Rep Max first spotted by AppInsiderAndroidUnited States (found via similar)
- 📦1RM Calculator: One Rep Max updated to version 1.8.0iOS- 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.… more - 📦1RM Calculator: One Rep Max version 1.8.0Android- 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.… more - 📈1RM Calculator: One Rep Max dropped out of every chart we trackiOSLast seen 29 Sep
- 🆕1RM Calculator: One Rep Max first spotted by AppInsideriOS#44 in Top Free · Health & Fitness · Taiwan
- 📦1RM Calculator: One Rep Max version 1.7.1iOS- A new design: results update as you type, and RPE, unit, and formula settings are together in Calculator options.
- The exercise list shows your best 1RM, with cleaner history, chart, and rep max screens.
- Restore now tells you when no purchase is found.
- Fixed the Wathan and Mayhew formulas shown in About calculation.… more - 🆕1RM Calculator: One Rep Max released on the App StoreiOS
- 🆕1RM Calculator: One Rep Max released on Google PlayAndroid
Collected from the stores by AppInsider since we first spotted the app. Dates are when we saw each change.
Rating
4.8 ★
593 ratings, both stores
Measured
App Store
App details
App ID
1566775126
Publisher
Yuri Koshiishi
Publisher country
Japan
On the store since
May 2021
5 years on the store
Minimum OS
iOS 15.0+
iPhone 6s and later
Devices
iPhone · iPad
Universal purchase
Content rating
4+
Languages
1
EN
Size
29 MB
Also listed in
Sports
Google Play
App details
App ID
com.yurikoshiishi.one_rm_calculator
Publisher
輿石ゆうり
Publisher country
Japan
Content rating
Everyone
1RM Calculator: One Rep Max downloads & installs
Both stores, worldwide. Bands are open; exact numbers are free with an account.
| Store | Downloads / day | Lifetime installs |
|---|---|---|
| App Store | – | – |
| Google Play | – | 50k+ Measured |
| Total | – | 50k+ Confidence |
How this is calculated
App Store: chart positions and rating growth per country, anchored on its own Android downloads; lifetime from ratings worldwide × installs per rating. Google Play: the daily change in its exact install count. The total adds every store.
Active users
All platforms, worldwide. Free with an account.
Stickiness (DAU / MAU)
how many monthly users open it on a given day
How this is calculated
Monthly users come from lifetime installs across every store, fitted on monthly active user figures companies publish; daily users = monthly × the typical daily/monthly ratio for the category. Confidence is the chance the real number is within half to double ours.
In-app revenue
Worldwide, what users spend before Apple and Google take their fee.
| Store | Per day | Per month | Share |
|---|---|---|---|
| App Store | |||
| Google Play | |||
| Total | Confidence | 100% |
Business model: In-app purchase-led
How 1RM Calculator: One Rep Max makes money: subscriptions, one-off purchases and ads.
In-app purchases
One-off purchases
/mo
of revenue
Where it ranks now
Both stores, across every country we track.
| Store | Best rank | Charting in | US Top Free | US Top Grossing |
|---|---|---|---|---|
| App Store | – | 0 of 30 countries | – | – |
| Google Play | – | 0 of 23 countries | – | – |
Full chart lists: App Store · Google Play.
Ratings
Both stores. Store data, measured.
| Store | Rating | Ratings |
|---|---|---|
| App Store | 4.9 ★ | 8 |
| Google Play | 4.8 ★ | 585 8 written reviews |
| Both stores | 4.8 ★ weighted by ratings | 593 |
About 1RM Calculator: One Rep Max
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/
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/
1RM Calculator: One Rep Max App Store
1RM Calculator
Not in any tracked top chart right now.
Updated 11 Nov 2026 · rankings refresh through the day
DeveloperYuri Koshiishi
CategoryHealth & Fitness
PriceFree
Released
Rating★ 4.9 (8)
Version1.8.0
Age rating4+
First seen by us
30 Sep 2026
30 Sep 2026Rating
4.9 ★
8 ratings
Measured
1RM Calculator: One Rep Max on the App Store
App details
App ID
1566775126
Publisher
Yuri Koshiishi
Publisher country
Japan
On the store since
May 2021
5 years on the store
Minimum OS
iOS 15.0+
iPhone 6s and later
Devices
iPhone · iPad
Universal purchase
Content rating
4+
Languages
1
EN
Size
29 MB
Also listed in
Sports
1RM Calculator: One Rep Max downloads
Worldwide, per day, and installs to date. The band is open; the exact number is free with an account.
How this is calculated
Apple publishes no download counts. App Store downloads come from chart positions and daily rating growth per country, calibrated on Google Play install counts; lifetime installs from ratings worldwide × installs per rating. Confidence is the chance the real number is within half to double ours.
Active users
All platforms, worldwide. Free with an account.
Stickiness (DAU / MAU)
how many monthly users open it on a given day
How this is calculated
Monthly users come from lifetime installs across every store, fitted on monthly active user figures companies publish; daily users = monthly × the typical daily/monthly ratio for the category. Confidence is the chance the real number is within half to double ours.
In-app revenue
Worldwide, what users spend in 1RM Calculator: One Rep Max before Apple and Google take their fee.
How this is calculated
Not on any Top Grossing chart: monthly active users × spend per user for its category, measured on the charted apps nearest the bottom of the charts.
Business model: In-app purchase-led
How 1RM Calculator: One Rep Max makes money: subscriptions, one-off purchases and ads.
In-app purchases
One-off purchases
/mo
of revenue
Where it ranks now
Every top chart it appears in across 30 countries.
| Country | Charts | Rank |
|---|---|---|
| Not charting right now. | ||
Ratings
App Store, worldwide.
Rating
4.9 ★
8 ratings
Measured
Ratings
8
Measured
About 1RM Calculator: One Rep Max
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/
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/
Latest updates
1.8.0
- 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.
1.7.1
- A new design: results update as you type, and RPE, unit, and formula settings are together in Calculator options.
- The exercise list shows your best 1RM, with cleaner history, chart, and rep max screens.
- Restore now tells you when no purchase is found.
- Fixed the Wathan and Mayhew formulas shown in About calculation.
More from Yuri Koshiishi
1RM Calculator: One Rep Max Android
Not in a tracked Google Play top chart right now.
Updated 11 Nov 2026 · rankings refresh through the day
DeveloperYuri Koshiishi
CategoryHealth & Fitness
PriceFree
Released
Installs50k+
Rating★ 4.8 (585)
Updated
Content ratingEveryone
Rating
4.8 ★
585 ratings
Measured
1RM Calculator: One Rep Max on Google Play
App details
App ID
com.yurikoshiishi.one_rm_calculator
Publisher
輿石ゆうり
Publisher country
Japan
Content rating
Everyone
1RM Calculator: One Rep Max downloads
Worldwide, per day, and installs to date. The band is open; the exact number is free with an account.
How this is calculated
Google Play shows an exact lifetime install count; downloads per day are its daily change (measured). When Play hasn't refreshed the count, they come from new ratings and Top Free chart positions. Confidence is the chance the real number is within half to double ours.
Active users
All platforms, worldwide. Free with an account.
Stickiness (DAU / MAU)
how many monthly users open it on a given day
How this is calculated
Monthly users come from lifetime installs across every store, fitted on monthly active user figures companies publish; daily users = monthly × the typical daily/monthly ratio for the category. Confidence is the chance the real number is within half to double ours.
In-app revenue
Worldwide, what users spend in 1RM Calculator: One Rep Max before Apple and Google take their fee.
How this is calculated
Not on any Top Grossing chart: monthly active users × spend per user for its category, measured on the charted apps nearest the bottom of the charts.
Business model: In-app purchase-led
How 1RM Calculator: One Rep Max makes money: subscriptions, one-off purchases and ads.
In-app purchases
One-off purchases
/mo
of revenue
Where it ranks on Google Play
Every top 200 chart it appears in across 23 countries.
| Country | Charts | Rank |
|---|---|---|
| Not in a Google Play top chart right now. | ||
Ratings
Google Play, worldwide.
Rating
4.8 ★
585 ratings
Measured
Ratings
585
Measured
Written reviews
8
Measured
About 1RM Calculator: One Rep Max
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/
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/
What's new in 1.8.0
- 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.
- 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.