Now on the App Store · iOS

Log your lifts.
Learn what's next.

Proof shows you your patterns: what's improving, what's stuck, and the days you lift best. Each lift gets a suggested next step. You make the call. Coming from Strong or Hevy? Bring your history.

Free. No account, no subscription, no ads.

500+Lifts, each one illustrated

50%Faster logging, one screen

1Suggested next step per lift

Inside the app

What's
inside.

50%faster

One-screen logger New

Your whole workout and the number pad on one screen.
536drawings

500+ lifts, all illustrated

Each drawing shows the muscles the lift works.
3goals

Set by your goal

Build muscle, get stronger, or stay in shape. Your targets change to match.
1minute

A routine built for you New

Pick a plan for your equipment, have your AI write one, or bring your own.
2apps

Import from Strong or Hevy

Your past workouts and records come with you.
1next step

Your patterns, in plain words Improved

Your best days, what's improving, what's stuck, and a suggested next step for each lift.
0accounts

Private

Everything stays on your phone. No account.

Proof one-screen logger: Legs day with illustrated lifts on top and the weight and reps pad below

Proof drawing picker for Back Squat: generic gear, the closest squat drawings, and the full library

Proof history patterns: a weekly rhythm chart and plain-language reads like Thursday is your PR day

Your goal

Build muscle, get stronger,
or stay in shape.

Pick one. Proof sets your rep ranges and weekly targets to match.

Progress for build muscle: weekly sets per area against a 10 to 20 growth range — Build muscle: sets per week.

Progress for get stronger: max gains per area over the last 4 weeks — Get stronger: your max.

Progress for stay in shape: days trained per area each week — Stay in shape: days trained.

Setup

A routine that fits
your gym and your week.

Tell it your goal, your equipment, and your days. Pick a plan, or have your AI write one.

Setup: your week, with days a week, minutes per session, and a split style, Let Proof pick by default — Your days and time.

Setup: plans for your home gym, Full body A and B marked best fit, each with its lifts drawn — Plans for your equipment.

Ask your AI: pick ChatGPT, Claude, Perplexity, or another, with your goal, days, minutes, and equipment filled in — Or ask your AI.

Proof welcome screen: Log your lifts, beat last time, Get started, and Coming from Strong or Hevy? Import

Lock Screen

Log a set from
your Lock Screen.

The rest timer shows on your Lock Screen and in the Dynamic Island. Log the next set right from there. Apple Watch coming soon.

Proof's rest timer as a Live Activity: the Dynamic Island up top and the Lock Screen widget below, each showing weight, reps, and a strike button

Body

See which muscles
you're training.

Every set colors in a muscle. Tap one to see its sets and lifts.

Proof body heat map: every muscle shaded by how much you have trained it — Your whole body.

Tapping the chest zooms in and opens a stats sheet: exercises, sets a week, volume, last trained — Tap a muscle.

Compare mode: the last 4 weeks against the 4 before, with muscles shaded by change — Compare to the month before.

Your routine

Change your routine
any time.

Skip, swap, or add a lift. Or ask your AI to improve it.

Proof edit routine: day blocks you can reorder, with Improve routine with AI at the bottom

Records

See where you
set records.

Switch the body map to PRs to see which muscles are getting stronger.

Proof body map with the PRs overlay: muscles shaded by records set

Weekly

Every week,
at a glance.

Sets and days for the week, and each muscle group against its target.

Proof progress: a week opened up, sets per area against the growth range

New record

Know when you
beat your best.

Log a set past your old best and Proof marks it as a new record.

Proof new-record moment on the logger: the wax seal stamps over the screen with New record, Back Squat

Lift

Every lift's
full history.

Your best, your last, your progress over time, and a suggested next step.

Proof lift detail for Bench Press: the drawing, best 181, last 181, 10 sessions, heaviest set over time, and plain-language insights

History

Every workout,
saved.

Tap any day to see the sets you did. It's all on your phone.

Proof history: every session filed and searchable, with records marked

Who it's for

Built for people who
actually train.

01 · The regular lifter
You follow a program.

You want your numbers and what to work on next.
Bring your routine, or import it
02 · Coming back
You're getting back into it.

No streaks to feel bad about. Start where you are.
Pick a plan
03 · Done with bloated apps
You want a simple log.

No account, no ads, no feed, no subscription.
On your phone only

On the App Store