Every set you lift, weighed against the one before it.
For iPhone, iPad and Apple Watch
How it works
Four screens. No blank page, no setup ritual, no spreadsheet.
Choose from our predefined catalogue, sorted by muscle group — or create your own in seconds.
Or use one of our predefined packs.
Order sets and rest times — or start from one of our predefined routines and make it yours.
Or use one of our predefined packs.
Put it on the calendar with a reminder, or begin training this second.
Your last session shows up inside every set of this one. That's the Ghost Set.
How the ghost behavesGhost Set
The Ghost Set isn't a record pinned to a wall. It's your last session of each exercise, set by set, and it changes every time you train.
I First session
There's nothing to beat yet. Every set you check off keeps its weight and reps, or its seconds if it's a hold. That trace is what will be waiting for you next time.
Check off the set and leave the trace.
II Set against set
Your set 2 is measured against your previous set 2, warm-up against warm-up. Last time's number sits inside each field, so you know whether you're past it while you type, before you check off the set.
III The verdict
When you check off the set, load decides first; at equal load, reps; for holds, seconds. Matching is recorded as matched, not as a loss. Beating it turns the bronze outline gold and logs it as a new best.
IV The relay
When you close the session, its sets take the ghost's place. Next time you race today's you: the bar rises every time you beat it and, if today was hard, next time measures you against today, not against your best day months ago. Whatever you beat lands on the session certificate.
Apple ecosystem
The session starts on the iPhone and doesn't stay there. Follow one two-minute rest from start to finish.
Thursday, September 24
9:41
Squat
Set 2 of 4 Leg Routine
Rest 1:53
Session 24:17
SkipLock Screen
The gold countdown, the set that's next and the session clock, without unlocking. If you're ready early, Skip is one tap away.
Dynamic Island
While you pick a song or answer a message, the countdown keeps running in the island. Press and hold to see the set, your previous best and skip the rest.
Apple Watch
The watch carries the same rest and, when it hits zero, moves straight to the set: weight, reps and your previous best. You complete it from your wrist; the iPhone stays on the bench.
iPad
Analysis with room to breathe: estimated 1RM, weekly volume, progress and the history of every set, in three columns.
Offline-first on every device, synced through your private iCloud. No server of ours in the middle.
No fine print
What other apps tuck away at the bottom of the page comes first here, at full size.
0 subscriptions
Unlimited logging, routines, estimated 1RM, Ghost Set, Apple Watch and Live Activities. No paywalls, no trial periods.
0 accounts
No sign-up, no email, no password to remember. Nothing to create before your first set.
0 servers of ours
It lives on your device and syncs through your private iCloud, with Apple. The app sends nothing to any server of ours: we don't have one.
2 open formats
Export your history whenever you want, no strings attached, with volume, estimated 1RM and your records already calculated. Open it in your spreadsheet or hand it to your AI to analyse.
That's all the fine print.
Before you download
The questions people ask before installing, without detours.
Still have a question?
Write to usNo. Every feature is free, with no subscription and no trial period.
An iPhone with iOS 26.5 or an iPad with iPadOS 26.5, or later. Apple Watch is optional: if you have one, the companion is included and needs watchOS 26.5.
Yes. Everything is saved on the device first; iCloud syncs when you're back online.
Your last session of that exercise, set by set, inside every field of the current one. It changes every time you train: you always compete against last time.
Yes. Each exercise keeps its own unit, kilograms or pounds, and your previous best is converted if you switch.
Yes. For holds like the plank you count seconds instead of reps, and the Ghost Set compares the time held.
Yes. They get a web preview with the full content, and can import it for free once they install the app.
No. TraceIron is exclusively native to the Apple ecosystem; that is a product decision, not a temporary limitation.
Free, no account, no subscription. For iPhone, iPad and Apple Watch.
