Track your lifts.
Get stronger.
Log a set in one tap. Unit remembers what you lifted last time, charts every PR, and lets your friends gas you up when you hit one — so you keep showing up.
- No credit card
- No password — sign in with an email code
- Export your data anytime
Why Unit
Stop guessing. Start progressing.
Progressive overload only works if you know what you did last time. Most lifters don't — because logging it is a chore.
1 tap
to log a set
Last session's weight and reps are pre-filled. Confirm and get back to resting.
0
plate math
Every weight you log comes with a per-side plate breakdown.
100%
automatic progress
Charts and history build themselves from the sets you log. No spreadsheet required.
Features
Everything you need between sets. Nothing you don't.
Unit is built around the 90 seconds of rest you have to record what you just did. Fast enough to use every set, deep enough to actually see your progress.
One-tap logging
Log a set before
your heart rate drops.
Tap New Set and your weight and reps are already filled in from last session. Adjust with a quick-pick chip if you went heavier, then tap Log. That's it.
- Weight and reps auto-fill from your last session
- Quick-pick chips for common weights and rep counts
- Per-side plate breakdown shown as you log
Lift with friends
Get gassed up.
Gas up your crew.
Share a workout in one tap and it lands in your friends' feed — every set, every PR. Drop a 🔥 on their squat PR, hype them up in the comments, and get the same energy back when it's your turn. Encouragement is the best pre-workout.
- A feed of your friends' workouts, sets, and PRs
- React with 🔥 💪 👏 💯 and cheer them on in the comments
- Get notified the moment your crew hypes you up
Presets
Build your split once.
Start it in one tap.
Save Push, Pull, Legs — or whatever your program calls for — with target sets, reps, and weight. Start a preset and your whole session is laid out, ready to go.
- Targets for every exercise, right on the card
- Repeat your last set with a single tap
- Notes per exercise for cues, seat heights, and grips
Progress
Watch the line
go up and to the right.
Every set you log feeds clean, per-exercise charts. See exactly where you're progressing, where you've stalled, and tap any point to jump back to that day's workout.
- Weight and estimated 1RM / 10RM charts per exercise
- Full workout history with every set and note
- Tap a data point to open that session
Workout trophies
Don't count pounds.
Count whales.
Finish a workout and Unit turns your total volume into something gloriously absurd — a hippo, a grand piano, an empty 737. Roughly one in five cards drops holographic. Collect them, share them, flex them.
- A new comparison card after every workout
- Rare holographic drops that tilt as you move
- Share your workout to your friends' feed
Holographic pull
That's like lifting three beluga whales!
About 9,450 lbs of glorious absurdity.
Heavy work
That's like lifting a hippopotamus!
About 3,500 lbs of glorious absurdity.
AI Coach
A coach that's read
every set you've logged.
Ask what to train today, whether your program is balanced, or why your bench has stalled. The coach answers from your actual training history — not generic advice.
- Personalized workout suggestions for today
- Training balance and weak-point analysis
- Available mid-workout from the tools drawer
And a lot more
All the tools. One app.
Ditch the timer app, the plate calculator app, and the notes app. Unit has them built right into your workout.
History, mid-set
Tap any exercise during a workout to see every time you've done it — weights, reps, and notes — without losing your place.
Plate calculator
See exactly which plates go on each side. No mental math.
Rest timer & stopwatch
Built-in timers with a notification when it's time for your next set.
Form videos
Exercise info and form videos for the whole default library.
Import from anywhere
Paste history from another app or a spreadsheet in any format — AI sorts it into workouts.
Your data, always
Export your complete history any time. No lock-in, ever.
Works with your AI
Connect Claude, ChatGPT, or Codex through the built-in MCP server and API to chat with your training data.
Built for your phone
Mobile-first, one-handed, and gym-lighting friendly in dark or light mode.
Get started
From sign-up to first set in under a minute
- 01
Sign in with your email
We'll send you a one-time code. No password to remember.
- 02
Build a preset — or don't
Save your routine for one-tap starts, or start an empty workout and add exercises as you go.
- 03
Lift. Tap. Repeat.
Log every set in a tap and watch your progress build itself.
FAQ
Questions? Answered.
How much does Unit Fitness cost?
Nothing. Unit Fitness is free to use — no credit card, no trial countdown.
Can I bring my history from another app?
Yes. Paste your workout history in pretty much any format — an export from another app, a spreadsheet, or your notes — and Unit's importer turns it into workouts with sets, reps, and weights.
Do I own my data?
Always. You can export your complete workout history from Settings at any time, and delete all of your data whenever you like.
Does it work on my phone?
Unit is designed mobile-first for one-handed use at the gym, and works great on desktop too.
Does it work with my program?
If your program has exercises, sets, reps, and weight, it works. Build presets for any split — PPL, upper/lower, 5/3/1, full body — or log ad-hoc workouts with 100+ built-in exercises plus your own custom ones.
Your next PR
starts with one tap.
Join Unit Fitness and never wonder what you lifted last time again.
Start tracking free