Comparison

Allurion vs 54D On

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

54D On

This program offers an online human transformation experience designed to help users break mental barriers and achieve significant physical and emotional results in just 54 days. It provides structured training, nutrition guidance, recovery support, and community interaction.

Highlights
  • High Intensity Online Training
  • Nutrition Management
  • Recovery Support
  • Real-time Coach Messaging
  • Workout Tracking & Scheduling
  • Progress Monitoring
  • Wearable Device Integration
Features
Read full description

54D ON is a digital personalized training platform that brings together exercise, nutrition, and wellness in one place. Unlike other apps, you never train alone. Every user is supported by a real coach who guides you, motivates you, and provides daily personalized follow-up. Your coach designs a 360° plan tailored to your level, goals, and lifestyle. Train anytime, anywhere, with access to dozens of On-Demand programs and live workouts including strength, cardio, mobility, Pilates, yoga, and wellness. You also receive nutrition plans and tools designed to support your energy, focus, and consistency. Everything is built to adapt to you, your pace, and your life. Train when you want, where you want. When you join the 54D ON family, you’re never training alone. Note regarding Apple Health: The app integrates with Apple Health to show your daily activity - distance, steps, active energy, and flights to help you better achieve your goals. App also uses Apple Health to track energy burned and heart rate during a workout session, if an Apple Watch is used. Workout metrics are shared with the coach to better design your workout schedule. DISCLAIMER: Users should seek a doctor’s advice before using this app and making any medical decisions.

Screenshots

Allurion4 screens
54D On4 screens

Verdict

The call

Allurion and 54D On both sit at 4.9 stars, but that hides the real split: 83% of 54D On's written reviews are positive against 65% of Allurion's. Allurion's advantage is update cadence (every 3 weeks vs every 2 months). On price, rating, ratings volume and ads 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. Neither carries in-app purchases, so what you see is what you pay.

ReceptionRating · Positive reviews · Number of ratings

On the App Store both sit at effectively the same score — 4.9 for Allurion against 5.0 for 54D On. Both are backed by a comparable volume of ratings — 776 and 1.8K respectively. Written reviews are what separate them: 65% of Allurion's written reviews are positive against 83% of 54D On's.

UpkeepUpdate frequency

Allurion ships an update every 3 weeks, 54D On every 2 months. The most recent releases landed on October 16, 2026 and October 15, 2026 respectively.

Scorecard2 real differences · 8 level
Allurion versus 54D On: the parameters behind the verdict, then further details
ParameterAllurion54D On
PriceFreeFree
Rating4.9 (776 ratings)5.0 (1.8K ratings) — better
Positive reviews64.6% of reviews83.0% of reviews — better
Number of ratings7761.8K — better
Update frequencyEvery 3 weeks — betterEvery 2 months
AdsNoNo
In-app purchasesNoNo
MonetizationFreeFree
DevicesiPhone, iPad, iPodiPhone, iPad, iPod, Apple Watch — better
Requires iOS15.015.0
Further details — not scored
Size97 MB134 MB
Age rating17+17+
DeveloperAllurion Technologies,inc.Coral GPY Gables LLC

Customer experience

Allurion

All ratings776 ratings
Positive97.6%
Neutral1.2%
Negative1.3%
Written reviews158 reviews
Positive64.6%
Neutral6.3%
Negative29.1%

54D On

All ratings1,781 ratings
Positive99.3%
Neutral0.2%
Negative0.5%
Written reviews94 reviews
Positive83.0%
Neutral3.2%
Negative13.8%

User reviews

Allurion

From 776 App Store ratings

What we love

  • ⭐ Excellent app and program
  • 🎯 Helpful for weight loss journey
  • 👍 Easy to use and navigate
  • 📊 Provides detailed tracking and analytics
  • 💪 Motivating and supportive

Room to improve

  • 🐛 Connectivity issues with Bluetooth scale
  • 🔄 Sync problems with Apple Health
  • 🔍 Lack of detailed data visualization
  • 🔧 Bugs and crashes after updates
  • 🤔 Confusing UI changes in recent updates

54D On

From 1.8K App Store ratings

What we love

  • 👍 Excellent training programs
  • 🙌 Motivational coaching and support
  • 🌎 Accessible from anywhere
  • 💪 Effective for physical and mental transformation
  • 🕰️ Flexible schedule and convenience

Room to improve

  • 🚨 Poor customer service and refund policies
  • ⏰ Strict cancellation policies

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

54D On

Reported bugs

2 issues
  • App issues with IP changes and travel
  • Occasional login and connectivity problems

Requested features

2 requests
  • More nutrition guidance and education
  • Improved music integration

In-app purchases

None

Allurion

No in-app purchases

None

54D On

No in-app purchases

Questions

Is Allurion free?
Allurion is free to download, with no in-app purchases.
Is 54D On free?
54D On is free to download, with no in-app purchases.
Which has better reviews, Allurion or 54D On?
54D On is rated higher. Allurion averages 4.9 out of 5 from 776 ratings, while 54D On averages 5.0 from 1.8K ratings.
Do Allurion or 54D On have ads?
Neither Allurion nor 54D On shows ads.
Which is updated more often, Allurion or 54D On?
Allurion ships an update every 3 weeks, and 54D On every 2 months. Most recently, Allurion was updated on October 16, 2026 and 54D On on October 15, 2026.

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