Simple Gym Videos Logging Progress Coach Screens Changelog App Store

iPhone · Free · iOS 18.2+

Log sets in seconds.

Simple Gym fills in last session's numbers, starts your rest timer on its own, and keeps every workout on your iPhone.

Download on the App Store Watch the tour ›
447 exercises Lock Screen timer Automatic PRs No account

Free. No ads, no subscription, no sign-up. Reads heart rate and calories from Apple Health; never writes to it.

The tour. 47 seconds, no sound. Real app, invented workout log.

Find it

Type the words, in any order.

447 exercises built in, plus your own. Every word you type has to match — the order doesn't.

raise lat
  • Filter chips for muscle, equipment, and type
  • Exercises you've done float to the top, with when you last did them
Search for 'raise lat' listing Dumbbell, Banded, Cable, Machine, and Single-Arm Cable Lateral Raise.
“raise lat” finds every Lateral Raise.

Log it

Last time is already filled in.

Open an exercise and the weight and reps from your last session are waiting. Change what moved. Tap Log Set.

  • Your best — max weight and max volume under the name
  • Last time — printed under each field
  • Log Set sits on top of the number pad
Barbell Bench Press: max weight 175 lbs, max volume 1,400 lbs; Set 1 prefilled with 175 lbs and 5 reps, last: 175 lb, last: 8.
Prefilled from last session.
Weight field set to 180 with the number pad open and a blue Log Set button above it.
Number pad, Log Set right above.

Rest

The timer starts itself.

Log a set and the countdown begins. Lock your phone and it keeps going on the Lock Screen and in the Dynamic Island.

Lock Screen Live Activity: Rest Timer, Barbell Bench Press, Set 3, 1:41 left.
  • Skip or reset right in the app
  • Pick the length in Settings
Two completed bench sets and a rest timer at 1:57 with Skip and Reset.
Two sets in. Rest has already started.

Personal records

Every PR, caught.

Beat your best weight or your best volume and Simple Gym says so the moment you log the set. Confetti included.

  • Max weight and max volume, tracked per exercise
  • Recent PRs listed in Analytics
New Personal Record card: Max Weight PR, Back Squat, 235 lbs for 3 reps, with confetti.
235 for 3. A new best on Back Squat.

Finish

A summary when you're done.

End the workout and get the numbers: time, volume, exercises, sets, today's PRs, and every set you logged. Rate the effort, add a note, done.

During a workout: Overview with 3 sets, Resume Dumbbell Lateral Raise, and a timer, above a red End Workout button.
Overview, Resume, and the timer stay pinned.
Great Workout summary: 2 exercises, 3 sets, 2,310 lbs volume, and a Barbell Bench Press PR at 180 lbs × 5.
Totals and today's PR.
Exercise breakdown and an effort scale from 1 to 10 set to 8, Hard.
Rate the effort from 1 to 10.

Three short demos.

Each one is the real app on an iPhone 17 Pro Max simulator. The workout history in them is made up.

Logging

Search to summary.

Progress

Charts, history, analytics.

Workout Coach

What to train today.

Progress

Watch the line climb.

Every exercise has a chart. Switch between weight, reps, volume, and estimated one-rep max over one month to a year.

WeightRepsVolume1RM
  • Change, best, sessions under every chart
Bench press weight chart over three months rising from 155 to 175 lbs: change +13%, best 175 lbs, 11 sessions.
Bench press, three months: +13%.

History and analytics

Every session. Every set.

Scroll back through every workout with its time, volume, and top lift. Open one for the full set-by-set breakdown. Flip to Analytics for your week, your totals, and where the work went.

Workout History: Thursday Oct 8, 52 minutes, 11,390 lbs, top lift Barbell Bench Press, five exercises listed.
History, grouped by day.
Session details for Thursday Oct 8: 52 minutes, 11,390 lbs, 16 sets, effort 6 Moderate, and a bench press table with volume per set.
One session, set by set.
Muscle Group Distribution donut: Back 24%, Legs 21%, Chest 16%, Arms 14%, Shoulders 13%, Core 6%, with recent personal records below.
Sets by muscle group.

Your week

One card for the week.

Workouts this week, volume, average time, and your streak — then lifetime sessions, sets, volume, and a few plain insights.

  • Most consistent day and top exercise
  • Heart rate and calories per session when Apple Health has them
Analytics: Training Snapshot card with 2 workouts this week, 2.3K lbs, 43 minutes average, 2-day streak; 41 sessions, 15 exercises, 457 sets, 383.7K lbs total.
Training Snapshot, then lifetime totals.

Workout Coach

Not sure what to train today?

Tap the lightbulb. Workout Coach lines up a session from your own log and which muscle groups have recovered. Swap any exercise, or regenerate. With Apple Intelligence on, it can arrange the workout on your iPhone.

Workout Coach, Today's workout: Back Squat, Romanian Deadlift, Barbell Glute Bridge, Barbell Hip Thrust, Barbell Reverse Wrist Curl, with Use this workout.
Today's workout, from your history.
Training insights: readiness 62, balance 88%, muscle recovery rings for chest, shoulders, full body, back, and undertrained core and legs.
Readiness and recovery per muscle.
Workout Coach in dark mode with the same five suggested exercises.
Same coach, dark mode.

Lights out.

Built on iOS system colors, so dark mode follows your phone. The 6 a.m. session doesn't need a flashlight.

Dark mode exercise list mid-workout.
Mid-workout
Dark mode rest timer on Back Squat.
Rest timer
Dark mode Back Squat chart, +22% over three months.
Squat, +22%
Dark mode training insights with readiness 62.
Insights

Also in the app.

Apple Health

Heart rate, read-only

Average and max heart rate, zones, calories, and recovery for each session. Simple Gym never writes to Health.

Backups

Your iCloud, not ours

Automatic backups to your private iCloud Drive. Export or import everything as JSON any time.

Training

Supersets and more

Supersets, bodyweight sets, cardio with duration and distance, holds, and your own custom exercises.

Privacy

No account

No sign-up, no ads, no analytics in the app. Your log lives on your iPhone.

Free on the App Store.

iPhone with iOS 18.2 or later. Apple Health is optional. Live Activities need iOS's permission once.

free · no subscription · no account · data stays on device

Download on theApp Store

Screenshots and videos show the real app with an invented workout history.