Comparison

Allurion vs TraceIron

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

Allurion

This app supports a weight loss program by tracking weight, steps, sleep, and exercise. It facilitates data sharing with a healthcare team, enables messaging and telehealth, and offers an AI coach for personalized guidance.

Highlights
  • Weight, step, sleep, and exercise tracking
  • Data sharing with healthcare team
  • In-app messaging and telehealth
  • AI weight loss coach
  • Library of program articles
  • HealthKit integration
Features
Read full description

The companion app for the Allurion weight loss program. This app syncs with your Allurion Connected Scale and Health Tracker, and easily tracks your weight, steps, sleep and exercise, and enables you to share data with their Allurion healthcare team, message Allurion Clinics, participate in video Telehealth calls, and easily request support. Participants in the Allurion Program have access to a library of articles designed help them in the program and their weight loss journey. Users also have access to Coach Iris, Allurion’s AI weight loss coach, for personalized guidance and motivation. Health App Integration: This app stores your weight data using HealthKit, so you can use it in Apple Health and other iOS apps.

About

TraceIron

Features
Read full description

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.

Screenshots

Allurion4 screens
TraceIron4 screens

Verdict

The call

The clearest difference is in-app purchases: Allurion at none against TraceIron's 3. Allurion also leads on iOS requirement (15.0 vs 26.5). TraceIron's advantage is update cadence (every 3 days vs every 3 weeks). On price, ads and device support there is nothing between them.

Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. TraceIron sells 3 in-app purchases, starting at $4.99 per month. Allurion asks for nothing beyond the download.

UpkeepUpdate frequency

Allurion ships an update every 3 weeks, TraceIron every 3 days. Both last shipped on October 24, 2026.

Scorecard3 real differences · 7 level
Allurion versus TraceIron: the parameters behind the verdict, then further details
ParameterAllurionTraceIron
PriceFreeFree
Rating4.9 (778 ratings) — better—
Positive reviews64.6% of reviews—
Number of ratings778 — better—
Update frequencyEvery 3 weeksEvery 3 days — better
AdsNoNo
In-app purchasesNo — betterYes
MonetizationFree—
DevicesiPhone, iPad, iPodiPhone, iPad, Apple Watch
Requires iOS15.0 — better26.5
Further details — not scored
Size97 MB27 MB
Age rating17+4+
DeveloperAllurion Technologies,inc.CESAR ANTONIO GUTIERREZ

Bugs and requests

Allurion

Reported bugs

5 issues
  • App freezes or crashes frequently
  • Incorrect weight and body metric calculations
  • Sync issues between app and connected devices
  • User data loss after updates
  • Persistent connection problems with Bluetooth scale

Requested features

5 requests
  • Add more exercise tracking options
  • Improve data sync with third-party apps
  • Restore detailed body composition tracking
  • Provide manual weight entry option
  • Enhance customization and personalization

TraceIron

Not enough reviews yet to summarise bugs or requests.

In-app purchases

None

Allurion

No in-app purchases

3 purchases

TraceIron

Subscriptions1
  • TraceIron+7 Days trial$4.991 Month
One-time2
  • 150 Maestro credits$1.49
  • Toxic Theme$2.99

Questions

Is Allurion free?
Allurion is free to download, with no in-app purchases.
Is TraceIron free?
TraceIron is free to download, with in-app purchases available.
Do Allurion or TraceIron have ads?
Neither Allurion nor TraceIron shows ads.
Which is updated more often, Allurion or TraceIron?
Allurion ships an update every 3 weeks, and TraceIron every 3 days. Most recently, Allurion was updated on October 24, 2026 and TraceIron on October 24, 2026.

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