# InBody vs 3B Method

The clearest difference is update cadence: InBody at every 5 days against 3B Method's every 3 weeks. InBody also leads on chart position (#79 vs unranked) and iOS requirement (13.0 vs 15.1). On price, ads, in-app purchases and device support there is nothing between them.

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

InBody ships an update every 5 days, 3B Method every 3 weeks. The most recent releases landed on October 20, 2026 and October 15, 2026 respectively.

## The numbers

| Metric | InBody | 3B Method |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[3.9 (1.9K ratings)](https://appshunter.io/ios/app/inbody/id884923678/reviews)** | — |
| Number of ratings | **1.9K** | — |
| Positive reviews | 51.1% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 5 days** | Every 3 weeks |
| Monetization | Free | — |
| Best chart rank | **#79** | — |
| Size | 275 MB | 166 MB |
| Requires iOS | **13.0** | 15.1 |
| Devices | iPhone, iPod, Apple Watch | **iPhone, iPad, iPod, Apple Watch** |
| Age rating | 4+ | 4+ |
| Developer | [InBody Co., Ltd.](https://appshunter.io/developer/524989563) | [UPTOWN ATHLETICS, LLC](https://appshunter.io/developer/1839504614) |

## What reviewers say

### InBody

[App page](https://appshunter.io/ios/app/inbody/id884923678)

**Currently charting:** #79 Top Free · Health & Fitness (US App Store)

Track your body composition, blood pressure, and daily activity to understand your overall health. Sync with devices to monitor progress and set fitness goals.

**Highlights:** Body composition analysis, Blood pressure monitoring, Activity and nutrition logging, Progress tracking, Device syncing, National ranking and friend competitions

**Features:** Apple Watch app

**In-app purchases:** none

**What reviewers like**

- 👍 Accurate and helpful data
- 🚀 Easy to navigate
- 💪 Comprehensive features
- 📊 Useful for tracking progress
- 🤩 Great app for fitness journey

**What reviewers complain about**

- 🐛 Connectivity issues
- 🔒 Privacy concerns
- 💻 Poor user experience
- 🤯 Frustrating sign-up process
- 🤖 Buggy and glitchy

**Reported bugs**

- Unable to verify email/phone
- Inconsistent sync with gym devices
- Crashes when manually entering data
- Password reset issues
- Disappearing historical data

**Requested features**

- Support for latest device models
- Integration with Apple Health
- Ability to export data
- More guidance on interpreting results
- Option to set fitness goals


### 3B Method

[App page](https://appshunter.io/ios/app/3b-method/id6752503060)

**Features:** Apple Wallet

**In-app purchases:** none


## Frequently asked questions

### Is InBody free?

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

### Is 3B Method free?

3B Method is free to download, with no in-app purchases.

### Do InBody or 3B Method have ads?

Neither InBody nor 3B Method shows ads.

### Which is updated more often, InBody or 3B Method?

InBody ships an update every 5 days, and 3B Method every 3 weeks. Most recently, InBody was updated on October 20, 2026 and 3B Method on October 15, 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.*