Allurion vs 54D On
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
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.
- 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
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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.
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.
- High Intensity Online Training
- Nutrition Management
- Recovery Support
- Real-time Coach Messaging
- Workout Tracking & Scheduling
- Progress Monitoring
- Wearable Device Integration
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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
Verdict
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
Both are free to download. Neither carries in-app purchases, so what you see is what you pay.
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.
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.
| Parameter | Allurion | 54D On |
|---|---|---|
| Price | Free | Free |
| Rating | 4.9 (776 ratings) | 5.0 (1.8K ratings) — better |
| Positive reviews | 64.6% of reviews | 83.0% of reviews — better |
| Number of ratings | 776 | 1.8K — better |
| Update frequency | Every 3 weeks — better | Every 2 months |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free | Free |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod, Apple Watch — better |
| Requires iOS | 15.0 | 15.0 |
| Further details — not scored | ||
| Size | 97 MB | 134 MB |
| Age rating | 17+ | 17+ |
| Developer | Allurion Technologies,inc. | Coral GPY Gables LLC |
Customer experience
Allurion
54D On
User reviews
Allurion
From 776 App Store ratingsWhat 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 ratingsWhat 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
Allurion
No in-app purchases
54D On
No in-app purchases









