marble
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Features

Everything marble does.

marble is a private workout journal for iPhone and iPad. It has three tabs, Add, Log and Progress, and connects to iOS and Apple Health where it helps. It’s free, with no account and no ads.

Add

Write it your way. Review, then save.

Add is where workouts come in: typed, pasted, imported or scanned. Nothing is logged until you’ve reviewed it.

marble Review Workouts screen with two imported Hevy workouts awaiting review

  • Paste or type in your own words

    Write gym notation like Squat 5x5 @ 225 or Bench 3x8 @ 185 rest 90s, or paste a note as it is. A live preview shows each exercise and its set count as you type.

  • On-device parsing

    Notation and files are read by a deterministic parser on every device. Apple Intelligence structures free-form prose on device when it’s available.

  • Multi-day Notes

    Paste a week at once. Lines that are only a date, a weekday or a label like Day 1 split it into separate workouts.

  • Hevy and Strong CSV

    Choose one or more .csv or .txt exports. Warm-ups are skipped, while RPE, notes, failure sets and session times come across.

  • Review before saving

    Check every workout, exercise match, set, date, RPE, rest and note. Weak name matches default to a new exercise instead of merging into the wrong one.

  • Drafts that wait for you

    An unfinished review is kept across relaunches, and you can resume it with your edits, dates and matches intact.

  • Scan handwritten pages

    Photograph every page of a training notebook. Text recognition runs on device, and a dated week is split into workouts for review.

  • History and repeat

    Search completed sessions by workout or exercise, filter by date and review every set. Repeat a session as an editable draft, and nothing is logged until you confirm.

  • Shortcuts handoff

    Shortcuts can send text straight to Add. If a draft is already open, you choose whether to add to it, replace it or keep it.

Log

Log without losing your flow.

Record weight, reps, distance, time, RPE, rest and notes, with each exercise showing only the fields it needs.

marble Log Set sheet showing the last set, personal best and a Save plus Next button

  • Fast set logging

    The Log Set sheet shows what you did last time and your personal best before you enter anything.

  • Log Again

    Repeat your last set with one tap from the Log Again card.

  • Save + Next

    Save a set and stay in the sheet for the next one.

  • Personal-record cues

    See the record to beat while you enter a set, and get a New PR cue the moment you pass it.

  • Workout sessions

    Start a focused session, log into it and finish it. Every set still lands in your journal.

  • Weekly split

    Build a weekly split so each training day has a plan.

  • Sprints to the tenth

    Build reusable sprint plans with a distance, a rep count and a target time or range. Time reps with the stopwatch or type a decimal, then see every rep, your best and your average.

  • Rest timer

    An in-app timer with a Live Activity, Dynamic Island controls to add 30 seconds or end early, and a rest-complete alert.

  • Supplements

    Log creatine, protein and other daily habits alongside your training.

  • Calendar

    A month view with training-day markers, day detail, streaks, and progress photos and videos.

  • Exercise library

    Search, favourite, create and safely edit exercises, each with its own emoji or SF Symbol icon.

Progress

Clear progress, computed on your phone.

The overview shows your top lifts. Open Details for goals, charts, records and reports, all calculated from your own logged sets.

marble Progress overview listing top exercises with their personal-record weights and dates

  • Top exercises

    Up to five of your most-logged weighted exercises, each with its personal-record weight and the date you set it.

  • Estimated 1RM verdicts

    Each lift gets an estimated 1RM trend and a plain verdict: progressing, holding or adapted. Comparisons are made at matched effort.

  • PR feed and rep records

    A feed of your real personal records, plus your best weight at every rep count for each exercise.

  • Progression hints

    When every set tops 8 reps at the same load and a manageable effort, marble suggests the next load and shows its evidence.

  • Weekly goal and flex weeks

    Set a sessions-per-week target. Hit it four weeks in a row to bank a flex week that covers one missed week.

  • Monthly report

    Sessions, volume and records, compared fairly with the same point last month, with short insights written on the device.

  • Muscle coverage

    Weekly hard sets per muscle group, measured against the 10–20 set guide.

  • Bodyweight and DOTS

    Log bodyweight or import it from Apple Health, correct a weigh-in that was wrong, and compare each lift to your bodyweight with a DOTS score.

  • Daily Highlights

    A private evening recap of that day’s truthful progress, on days you train. It appears from 8:00 PM by default, and you can change the window.

iOS

Reach marble from anywhere on iOS.

marble uses the native iPhone and iPad features you already know, so a set is never more than a glance away.

  • Widgets

    The Weekly Goal widget sits on the Home Screen or Lock Screen, and the medium size includes quick logging.

  • Siri and Shortcuts

    Log a set, repeat your last set, and start or finish a workout by voice or from Shortcuts.

  • Control Center and the Action button

    Open quick logging from Control Center, the Lock Screen or the Action button.

  • Live Activities

    Rest counts down on the Lock Screen and in the Dynamic Island, with +30 seconds and End controls.

  • Spotlight

    Find your exercises from system search.

  • iPhone and iPad

    Runs on iOS and iPadOS 26 or later, in light and dark mode, with support for larger text sizes.

Apple Health

Connected to Apple Health, only if you choose.

Apple Health links marble to Apple Watch, Garmin and other apps that write to Health. marble has no Watch app of its own.

  • Import workouts

    Load Apple Watch workouts, and Garmin workouts synced through Garmin Connect, with their origin, duration, calories and heart rate. Turn on auto-import to add new ones whenever you open marble.

  • Import bodyweight

    Bring weigh-ins in from Apple Health to track bodyweight and DOTS.

  • Send sessions to Health

    Optionally save completed training days as strength workouts with an effort score from your RPE, so they count toward Apple’s Training Load.

  • An honest limit

    Apple Health carries workout summaries, not per-set weight and reps. Sets and reps are logged in marble.

Privacy and data

Your training stays yours.

There’s no account, no marble server, no ads and no third-party tracking in the app. Your core data stays on your iPhone or iPad.

marble Data and Backups screen showing on-device totals with export and restore controls

  • On device

    Parsing, analysis and storage all happen on the device and keep working offline.

  • JSON backup and restore

    Export a portable backup of your exercises, sets, supplements, sessions, weigh-ins and split. A restore adds missing data without deleting anything, and a failed restore leaves no partial changes.

  • Photos stay local

    Progress photos and videos stay on the device and aren’t included in backup files.

  • Careful recovery

    If saved workouts can’t open, marble keeps the original files and offers retry and recovery-copy options.

  • Free

    Every feature, with no subscription and nothing to unlock.

Start the record.

Download on the App Store Free · iPhone and iPad · iOS 26 or later