Log Jam: Log Lifts, 1RMs, WODs
WOD Log & 1RM Calculator
Free · In‑App Purchases · Designed for iPad. Not verified for macOS.
Class moves too fast for math. Log Jam is the training companion that does the math before you even chalk up.
How many times has your coach said "80% of your 1RM" and you've had to pull out your phone, do the math, figure out the plates, and load the bar—while everyone else is already moving?
Yeah. So I built this.
Log Jam is a training companion built for athletes who want to be as efficient in class as they are in life. Less mental overhead. More work.
START FREE — 1 MONTH ON US
Try Log Jam free for a month, then $4.99/month or $39.99/year. All features require a Log Jam Pro subscription.
LIFT TRACKING
Log every lift with weight, reps, and estimated 1RM. Log Jam tracks your all-time best and flags when a lift is going stale — so you're always training at the right intensity.
1RM PERCENTAGE CALCULATOR
Pick a lift. Log Jam instantly shows every percentage of your 1RM—with the exact plates visualized right there. No math. No notes app. No wasted time. Log the weight on the spot and keep moving. If a lift hasn't been touched in a while, Log Jam catches it and can automatically adjust your target down — so you're not chasing a number from a year and a half ago.
WHITEBOARD SCANNING
Point your camera at the whiteboard. Log Jam reads the strength section, the workout, the time cap, and any named workouts on the board. It expands abbreviations automatically (DL → Deadlift, C&J → Clean & Jerk). Everything lands straight in your workout log — no typing required.
FATIGUE ENGINE
Miss a class because the day went sideways? Log Jam's Fatigue Engine tracks which muscle groups are still fried—and which ones are ready—so when you hit open gym, you already know exactly what to train. Tap one button and it builds your full workout: warm-up progressions, working sets, and weights calculated from your actual history. No guessing. No wasted time.
LIVE ACTIVITY REST TIMER
Start your rest between sets and Log Jam puts a countdown on your Dynamic Island and Lock Screen — with your next set's weight and reps already there.
APPLE WATCH
Want to leave your phone aside and go super minimal during the strength section? Check percentages and log sets right from your wrist.
WIDGETS
The Scan Whiteboard widget gets you into the scanner in one tap — and flips to a green checkmark once you've logged for the day. The Fatigue Readout widget shows which movement patterns are rested and ready, right on your home screen.
PLATE PICKER
Tap the plates. See the total. Log Jam's Plate Picker lets you build your bar weight one plate at a time — it adds up both sides automatically so you can load the bar and get moving.
SMART HISTORY IMPORT
Already tracking lifts in another app? Log Jam uses AI to read your history automatically — whatever format it's in. Screenshot it, import a CSV, paste your notes. Log Jam figures it out.
BUILT FOR THE GYM
- iCloud sync across all your devices
- Works offline — no account required
- Saves your gym location automatically
- Clean, fast interface that gets out of your way
Class moves fast. Log Jam keeps up.
On a personal note:
Log Jam was built during a pretty wild chapter of my life. My family lost our home in the LA wildfires — so every download genuinely helps me, my wife, our two daughters, and our dog Lucy rebuild. We appreciate it more than you know.
Now go hit a PR.
Privacy Policy: https://logjam-proxy.mikebernstein.workers.dev/privacy
Terms of Use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/
The developer, Mike Bernstein, indicated that the app’s privacy practices may include handling of data as described below. For more information, see the developer’s privacy policy .
Data Linked to You
The following data may be collected and linked to your identity:
- Purchases
- Identifiers
Data Not Linked to You
The following data may be collected but it is not linked to your identity:
- Health & Fitness
- Location
- User Content
- Usage Data
Accessibility
The developer has not yet indicated which accessibility features this app supports. Learn More
Information
- Seller
- Paradox Pictures, Inc
- Size
- 15.2 MB
- Category
- Health & Fitness
- Compatibility
Requires iOS 17.6 or later.
- iPhone
Requires iOS 17.6 or later. - iPad
Requires iPadOS 17.6 or later. - Mac
Requires macOS 14.6 or later and a Mac with Apple M1 chip or later. - Apple Vision
Requires visionOS 1.3 or later. - Apple Watch
Requires watchOS 26.4 or later.
- iPhone
- Languages
- English
- Age Rating
9+
- 9+
- Contains
Health or Wellness Topics
- In-App Purchases
Yes
- Log Jam Pro $39.99
- Log Jam Pro $4.99
- Copyright
- © 2026 Paradox Pictures, Inc