# 1RM Calculator & Strength Log — Strength log & PR tracker > Strength log & PR tracker (iPhone/iPad app by Phuc Pham.) - Source: https://appshunter.io/ios/app/1rm-calculator-and-strength-log/id6772272093 (this page in markdown: same URL + `.md`) - Developer: [Phuc Pham](https://appshunter.io/developer/1893081423) - Category: Health & Fitness - Price: Free - Age rating: 4+ - Requires: iOS 17.0 · 8 MB - Languages: American English - Released: 2026-06-04 - Data updated: 2026-08-23 - User reviews in markdown: https://appshunter.io/ios/app/1rm-calculator-and-strength-log/id6772272093/reviews.md ## What is 1RM Calculator & Strength Log? Know your one-rep max without ever grinding out a dangerous single. Enter any working set — the weight you lifted and how many clean reps you got — and OneRepMax instantly estimates the heaviest single you could hit today. Most 1RM apps run one formula and call it a day. OneRepMax cross-checks seven proven strength-science equations — Epley, Brzycki, Lombardi, Lander, O'Conner, Mayhew and Wathan — and gives you a blended average so your number holds up whether you tested at 3 reps or 12. Then it turns that max into a full percentage table: the exact load for warm-ups, 5x5 strength work, and hypertrophy sets, in kg or lb. WHAT YOU GET - A trustworthy one-rep max from seven validated formulas, not a single guess - A complete percentage table with warm-up ramp and training loads for every set - Per-lift logging for squat, bench, deadlift and press with personal-record tracking - Trend charts that show your estimated max climbing week over week - A Beginner-to-Elite strength level scored from your bodyweight for each lift - A Learn library explaining the formulas, programming and how to test safely, with cited sources PERFECT FOR - Powerlifters programming their next block around accurate maxes - Lifters running 5x5, 5/3/1 or any percentage-based plan - Gym-goers who want to load the bar right without maxing out - Coaches and beginners learning what the numbers actually mean WHY NOT JUST USE A FREE WEB CALCULATOR? A web box gives you one number from one formula and forgets it the second you close the tab. OneRepMax keeps your history for every lift, blends seven equations for a number you can trust, builds your whole training table around it, and charts your progress over months — all offline. PRIVACY Your lifts and bodyweight stay on your device. No account, no sign-up, nothing uploaded. FULL ACCESS A free estimate is always available. Full access unlocks all seven formulas plus the blended average, per-lift logging with PRs, trend charts, and the bodyweight strength-level estimate. Upgrade weekly, yearly, or once with a lifetime purchase. Load the bar with the right weight this session — open OneRepMax and enter your last set. Terms of Use (EULA): https://web-levi.web.app/terms Privacy Policy: https://web-levi.web.app/privacy-policy Questions? tphuc.work@gmail.com ## Version history (last 3 releases) ### 1.1.1 — 2026-08-15 Bug fixes and performance improvements. ### 1.1.0 — 2026-07-17 Initial release. ### 1.0 — 2026-06-05 No release notes. ## More apps by Phuc Pham - [Spy Cam Detector: Bug Radar](https://appshunter.io/ios/app/spy-cam-detector-bug-radar/id6763095044) - [Audio Bible: KJV Scripture](https://appshunter.io/ios/app/audio-bible-kjv-scripture/id6763095570) - [Feng Shui Compass & Horoscope](https://appshunter.io/ios/app/feng-shui-compass-and-horoscope/id6763224597) - [Year Progress: Days & Percent](https://appshunter.io/ios/app/year-progress-days-and-percent/id6767788732) - [AI Email Writer: Smart Reply](https://appshunter.io/ios/app/ai-email-writer-smart-reply/id6767789113) - [Alarm Clock: Wake Up Missions](https://appshunter.io/ios/app/alarm-clock-wake-up-missions/id6767789239) All apps by Phuc Pham: https://appshunter.io/developer/1893081423 --- *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 2026-08-23.*