# Allurion vs IFSO

Allurion and IFSO are too close to call on the numbers: across 6 compared parameters — price, update cadence, ads and in-app purchases among them — neither pulls far enough ahead to decide it. What separates them is feature set and interface, not measurable difference.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

Allurion ships an update every 3 weeks, IFSO monthly. The most recent releases landed on October 16, 2026 and October 1, 2026 respectively.

## The numbers

| Metric | Allurion | IFSO |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.9 (776 ratings)](https://appshunter.io/ios/app/allurion/id1114672166/reviews)** | — |
| Number of ratings | **776** | — |
| Positive reviews | 64.6% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 3 weeks** | Monthly |
| Monetization | Free | — |
| Size | 97 MB | 20 MB |
| Requires iOS | **15.0** | 15.1 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 17+ | 4+ |
| Developer | [Allurion Technologies,inc.](https://appshunter.io/developer/1114672165) | [IFSO INTERNATIONAL FEDERATION FOR THE SURGERY OBESITY AND METABOLIC DISORDERS](https://appshunter.io/developer/1447103345) |

## What reviewers say

### Allurion

[App page](https://appshunter.io/ios/app/allurion/id1114672166)

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:** Vision Pro support

**In-app purchases:** none

**What reviewers like**

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

**What reviewers complain about**

- 🐛 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

**Reported bugs**

- 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**

- 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


### IFSO

[App page](https://appshunter.io/ios/app/ifso/id1447103346)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Allurion free?

Allurion is free to download, with no in-app purchases.

### Is IFSO free?

IFSO is free to download, with no in-app purchases.

### Do Allurion or IFSO have ads?

Neither Allurion nor IFSO shows ads.

### Which is updated more often, Allurion or IFSO?

Allurion ships an update every 3 weeks, and IFSO monthly. Most recently, Allurion was updated on October 16, 2026 and IFSO on October 1, 2026.

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*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*