TraceIron
Lifting log with an AI coach
Free · In‑App Purchases
New: Maestro, your AI training partner. It knows every set you've logged and works alongside you. Try it for 7 days with TraceIron+. Training stays free.
TraceIron is a strength training log for lifters who want to know, on every set, whether they are lifting more than last time. And now, with Maestro: an AI training partner that knows every set you have logged.
MAESTRO: ANSWERS WITH WHAT YOU HAVE DONE
• "Should I add weight on squats?" "Yes. You've closed 5 × 5 at 100 kg two sessions in a row without missing a rep. Try 102.5 kg on Thursday."
• It reads your history, your bests and your Ghost Set before replying: your numbers, not textbook advice. And when a day doesn't go well, it tells you why.
• It works while you train: "Log 8 at 60 and give me two minutes" and the set is logged with your rest running.
• It builds routines, adds any missing exercises and schedules them on your calendar. Every step stays in view.
• It never signs for you: before deleting or rebuilding anything, it asks your permission.
• It doesn't diagnose or prescribe. If you mention pain or an injury, it will tell you to stop and see a professional.
• It only sends data with your consent, doesn't store your conversations and never uses Health data.
• Maestro is part of TraceIron+ and works on iPhone and iPad with an internet connection.
TRAINING STAYS FREE
Every training feature included, no ads and no account to create: open the app and train. Everything Maestro does, you can also do by hand without paying anything.
GHOST SET: COMPETE AGAINST YOUR LAST SESSION
• Each set shows, inside the field, the weight and reps of the same set in your previous session.
• When you log it, TraceIron gives the verdict: below, matched or beaten. For isometric holds it compares seconds.
• Beating it turns the bronze outline gold and records a new personal best.
LOG A SET IN TWO TAPS
• Weight and reps prefilled; one tap on the seal logs the set.
• Kilograms or pounds per exercise, and timed isometric exercises.
• A certificate when you finish: duration, volume and the records you set.
NO BLANK PAGE
• Starter plans: full body, upper/lower and push/pull/legs.
• Unlimited routines and a calendar to schedule them with reminders.
YOUR REST FOLLOWS YOU
• Countdown on the Lock Screen and in the Dynamic Island, with an alert when it ends.
• Apple Watch app: follow your rest and complete the set from your wrist.
PROGRESS YOU CAN READ
• Estimated 1RM, weekly volume, sessions and records per exercise.
SHARE IT, TAKE IT WITH YOU
• Share routines, exercises and collections with a link that opens in any browser; anyone with the app imports them in one tap.
• Export your whole history as JSON or CSV, with volume, 1RM and records already calculated.
YOUR DATA, IN YOUR ICLOUD
Your workouts are stored on your device, work offline and sync through your private iCloud; we don't keep them on any server. With your permission, it saves each workout to Health and reads your heart rate during the session.
THEMES THAT CHANGE THE WHOLE APP
• Calibre, the flagship theme, is free: fine watchmaking applied to training, in gold and bronze. Toxic, the first paid theme, changes material, typography, motion and haptics.
• See each theme in action before you buy it. One-time purchase; no theme locks a training feature.
TRACEIRON+
• Optional monthly subscription: Maestro with 300 credits a month and every paid theme included while it lasts.
• 7-day free trial with 40 credits. Subscribers can add 150-credit top-ups that never expire and remain usable even after cancelling.
• Each reply spends credits based on what Maestro reads and does; your balance is always in Profile → TraceIron+.
• Themes you buy separately stay yours even if you cancel.
Payment is charged to your Apple Account at confirmation of purchase. The subscription renews automatically unless cancelled at least 24 hours before the end of the current period; manage or cancel it in your Apple Account settings.
Privacy: https://traceiron.com/privacy
Terms: https://traceiron.com/terms
Available in English and Spanish.
Your next session already has a number to beat.
Ratings & Reviews
- This app hasn’t received enough ratings or reviews to display an overview.
• Meet Maestro, your AI training partner: it answers with your history, logs sets, runs rests and builds and schedules routines. It always asks before deleting anything.
• TraceIron+: Maestro with 300 credits a month and every paid theme included, with a 7-day free trial.
• Training stays free.
• Fixed a crash when deleting sets during a session, and improved exercise reordering.
The developer, CESAR ANTONIO GUTIERREZ, indicated that the app’s privacy practices may include handling of data as described below. For more information, see the developer’s privacy policy .
Data Linked to You
The following data may be collected and linked to your identity:
- Health & Fitness
Accessibility
The developer has not yet indicated which accessibility features this app supports. Learn More
Information
- Seller
- CESAR ANTONIO GUTIERREZ
- Size
- 27.9 MB
- Category
- Health & Fitness
- Compatibility
Requires iOS 26.5 or later.
- iPhone
Requires iOS 26.5 or later. - iPad
Requires iPadOS 26.5 or later. - Apple Vision
Requires visionOS 26.5 or later. - Apple Watch
Requires watchOS 26.5 or later.
- iPhone
- Languages
- English and Spanish
- Age Rating
9+
- 9+
- Contains
Health or Wellness Topics
- In-App Purchases
Yes
- 150 Maestro credits $1.49
- TraceIron+ $4.99
- Toxic Theme $2.99
- Copyright
- © 2026 César Antonio Gutiérrez Contreras