# One Rep Max: 1RM Calculator — user reviews > 55 indexed App Store user reviews of One Rep Max by Charles Vanderhoff, rated 4.40/5 from 178 ratings. - Source: https://appshunter.io/ios/app/one-rep-max-1rm-calculator/id950621710/reviews - App overview in markdown: https://appshunter.io/ios/app/one-rep-max-1rm-calculator/id950621710.md - Rating breakdown: 5★ 137 · 4★ 16 · 3★ 5 · 2★ 2 · 1★ 18 ## Newest reviews (10 of 55) ### 3/5 — It does the job. *2026-05-14* It definitely does the job. Was 5 stars then it put the percentages/reps behind a pay wall. ### 4/5 — New 🆕 *2024-10-15* This is a very interesting app design and concept about sport and fitness products just like great ### 3/5 — Wonky and now dead *2020-11-23* Loved the idea. Managed around it being a problem getting into fields for awhile. Now it won’t open with latest iOS 👎 **Developer response:** Hey Audiodave_iPad - Very sorry you ran into trouble with the app opening. v4.0.0 was a complete rewrite of the app and you should no longer face these issues. Let me know if there is anything else I can do to make the app better for you! ### 2/5 — Complicated *2020-09-25* So this is part of an entire suite of software that is in some kind of useful post-beta but honestly it is way too complicated. Anyone heard of second system syndrome? I don’t need or want most of what is being offered. **Developer response:** Hey Blemishkind - Major enhancements have been done in v4.0.0 and you should no longer face these issues. Let me know if there is anything else I can do to make the app better for you! ### 4/5 — Update??? *2019-12-31* for when update **Developer response:** Good news: there have been several major updates since. Worth another look. ### 1/5 — Not good enough *2019-03-05* Great for estimating your 1 Rep Max. But keeping track? You gotta be kidding. It’s not at all intuitive on how to keep track for different lifts. Plus, it’s really buggy about dates and keeping the lifts you select straight—I’d select dead lift then look at the log to see it changed to back squat. Not helpful at all. **Developer response:** Hi chimoshi, sorry to hear about the UX/UI issues you had on v3.1.8 of the app! v4.0.0 was a complete rewrite of the app from the ground up and you should no longer have the issues you experienced. ### 1/5 — Horribly user-unfriendly *2018-06-23, version 3.1.8* This app is a waste of money however has potion to work if it was more user-friendly. Purchased by accident and regret it horribly ### 5/5 — Love it *2017-05-26, version 3.1.6* Love it cuz it's freeeeeeeee ### 5/5 — 5 Stars *2017-05-05, version 3.1.5* It is a good app. Very simple design and gets to the point. It does what it needs to do without any extra fluff + points for that. ### 3/5 — Why does it reload every time? *2017-02-19, version 3.1.3* Would be great. I mean it is a calculator using a simple formula. And it does the calculations fine. But why the hell does it have to reload for so long every time I put it in the background for a few minutes and switch back to it? ## Most critical reviews (10 lowest-rated) ### 1/5 — Wow *2026-07-28* I’ve had this app for free since it first started and now I’m going to get charged a subscription for this. I think I’m going to do my own math now. **Developer response:** You’ve been with this app over 10 years! That means so much to me. Send me an email at support@vandersoft.co for pro on the house. ### 1/5 — Disappointed *2026-05-24* Placing previously available features behind a paywall? Yeah, uninstalled. **Developer response:** Appreciate your feedback! If you ever decide to come back send an email to support@vandersoft.co and I'll see about getting you a free trial of Pro. ### 1/5 — Made it useless unless you pay a sub *2026-04-14* Don’t hate them for it but it’s useless unless you pay a subscription. So yeah look for something else **Developer response:** Thanks for giving the app a shot and appreciate the feedback! ### 1/5 — Free??? *2026-04-02, version 4.0.12* Is the app not free to use anymore? 😅 ### 1/5 — Functional, but delusional pricing *2026-02-01* I’m not paying you $50 for this app. It’s even more insulting you try to turn this into a subscription service. Get a real job. **Developer response:** Thanks for giving the app a shot and appreciate the feedback! ### 1/5 — Rescinded key features *2025-12-16* I purchased this app a few years ago and I’m now blocked from using basic features without being forced to sit through 2 minutes of trash ads because the developer switched to a subscription model. It’s the way most of these apps are going, but it’s still gross. Now looking for an alternative. **Developer response:** Hi there, I'm really sorry for the frustration. Previous lifetime purchasers absolutely should not be seeing ads or being asked to subscribe again — your original purchase should still be honored. This sounds like a sync issue that I can fix for you. Please email me at support@vandersoft.co and I'll get your Pro access restored right away. I appreciate you reaching out and hope to make this right! ### 1/5 — Was Great… *2025-07-07, version 4.0.8* Another example of taking a functional tool and turning it into a Swiss Army knife. ### 1/5 — Paid Only *2025-04-14, version 4.0.6* Used this app for years because I really enjoyed the graphing feature for one rep maxes but they changed it to being a pro only feature. ### 1/5 — Not worth it *2022-01-19* Awful for Keeping track. Super annoyed I just spent $4 and it doesn’t work **Developer response:** Hey there meganbuddreyes52012 - Very sorry you had a bad experience on v3.1.8 of the app. Major enhancements have been done in v4.0.0 and you should no longer face these issues. Let me know if there is anything else I can do to make the app better for you! ### 1/5 — Security concerns *2021-11-30* I get notifications occasionally that this app is copying content from my clipboard. **Developer response:** Hey there 2Scoops4Me - Very sorry you had the clipboard permission request appear in v3.1.8 of the app. This clipboard permission request was made by a library called "Firebase" for an unrelated feature that is no longer included in v4.0.0 of the app. Major enhancements have been done in v4.0.0 and you should no longer face these issues. Let me know if there is anything else I can do to make the app better for you! ## Most praised reviews (10 highest-rated) ### 5/5 — Best 1RM app I’ve used *2026-04-18* Super clean and easy to use. I love that it supports multiple 1RM formulas and lets you track progress over time with charts. The plate calculator is a nice bonus. I’ve used a few lifting apps and this is the one I keep coming back to. **Developer response:** Thanks! Glad it has stuck. ### 5/5 — Helpful app & developer! *2025-11-19* This app has been extremely helpful for keeping track of my RMs. The developer was also quick to respond to my feedback and implemented some features based on it! I’m happy I can load the plate calculator from my last RM and quickly see which plates I need for a given percentage. Thanks! :) **Developer response:** I’m really glad the app has been helping you track your RMs and simplify plate loading. I appreciate you sharing feedback, your suggestions directly helped shape those new features. If you ever have more ideas or run into anything, feel free to reach out anytime! 💪 ### 5/5 — Top tier *2025-03-24* The update to this app is top tier! Love to see the addition of 2-10RM. I’ve used this app for years to make the “math” for adjusting clients (and my own) lifts easy. Easily the best weight lifting calculator on the market. **Developer response:** Thanks! Glad the 2-10RM addition is useful. Keep lifting. ### 5/5 — Why do I have to upgrade it to pro to log more than 1073 pounds *2024-03-23* Please update this app **Developer response:** Hey there, thanks for the feedback and sorry for the inconvenience! I have made some major enhancements in the most recent version and you should no longer have this limitation. ### 5/5 — Not to bad *2023-04-10* It’s almost accurate just a little off but it’s free and works well **Developer response:** Thanks! Try different 1RM formulas in settings, one of them usually lands closer for a given lift. ### 5/5 — I bought something and have no idea what I paid for *2022-10-05* I bought something and have no idea what I paid for. It said like 3.99 and I have no idea what I clicked but the app is free and great for pushing yourself for that one rep. **Developer response:** Ha, fair. The app is free, if you want to know what that purchase was, email support@vandersoft.co with your Apple ID and we will look it up. ### 5/5 — 5 Stars *2022-01-05* It’s accurate and it’s free **Developer response:** Thanks! ### 5/5 — Good basic not difficult *2021-10-24, version 3.1.8* Very basic and quick and easy to use for what I am after! ### 5/5 — progress *2020-05-30* amazing app helps me keep track of progress and motivates me to be better **Developer response:** Thanks! Keep at it. ### 5/5 — Nice app *2020-01-07, version 3.1.8* App works good-I’m looking for an app that will lay out the percentages for a 5-3-1 power program for each exercise starting with 90% of a 1 rep max and laying out the workout program for a month or a year at a time taking into account a 5lb increase every month for bench presses, shoulder presses, pull downs and bent over rows. And taking into account a 10lb increase every month for squats, deadlifts, leg press, trap bar. --- *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 2026-08-18.*