# UpDown vs Body Mass

The clearest difference is rating: Body Mass at 5.0 against UpDown's 4.4. Body Mass also leads on in-app purchases (none vs 3) and iOS requirement (15.0 vs 17.0). UpDown's advantage is update cadence (every 4 weeks vs every 5 months) and review sentiment (86% vs 75%). On price, ads and device support there is nothing between them.

Both are free to download. UpDown sells 3 in-app purchases, starting at $1.99 per month. Body Mass asks for nothing beyond the download.

Body Mass holds the better App Store score, 5.0 against 4.4. That said, the two scores are not equally well evidenced: UpDown has 16 ratings behind it against 3, so its average is the more settled of the two. Written reviews complicate that: 86% of UpDown's written reviews are positive against 75% of Body Mass's, so the app with the better star average is not the one people write more warmly about.

UpDown ships an update every 4 weeks, Body Mass every 5 months. Both last shipped on October 24, 2026.

## The numbers

| Metric | UpDown | Body Mass |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.4 (16 ratings)](https://appshunter.io/ios/app/updown-weight-tracker/id1167706233/reviews) | **[5.0 (3 ratings)](https://appshunter.io/ios/app/body-mass-easy-weight-tracker/id1507588203/reviews)** |
| Number of ratings | **16** | 3 |
| Positive reviews | **85.7% of reviews** | 75.0% of reviews |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | **Every 4 weeks** | Every 5 months |
| Monetization | Freemium | **Free** |
| Size | 4 MB | 4 MB |
| Requires iOS | 17.0 | **15.0** |
| Devices | iPhone, iPad, Apple Watch | iPhone, iPod, Apple Watch |
| Age rating | 4+ | 4+ |
| Developer | [Sergei Ivanov](https://appshunter.io/developer/932468091) | [Martspec LLC](https://appshunter.io/developer/1506250419) |

## What reviewers say

### UpDown

[App page](https://appshunter.io/ios/app/updown-weight-tracker/id1167706233)

Track your weight journey with a comprehensive journal that supports multiple family profiles. Visualize progress with charts, calculate BMI, and set reminders. Syncs with Apple Watch and Health for seamless health monitoring.

**Highlights:** Weight journaling, Multiple user profiles, BMI calculation, Progress charts, Reminders, Apple Watch & Health support, CSV export

**Features:** Family Sharing, Apple Watch app

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| PRO Version (Monthly) | $1.99 | per month |
| PRO Version (Yearly) | $14.99 | per year |
| PRO Version (Lifetime) | $29.99 | one-time |


### Body Mass

[App page](https://appshunter.io/ios/app/body-mass-easy-weight-tracker/id1507588203)

Effortlessly track your weight and monitor progress with this Apple Watch application. It offers seamless iCloud backups and Apple Health integration, encouraging consistent logging to support your health and wellness journey. The app is completely free, with no advertisements or in-app purchases.

**Highlights:** Save body weight, Data records history, Auto calculation weight gain or loss, Apple Health sync, iCloud backups, Works without iPhone, Minimalist style

**Features:** Apple Watch app

**In-app purchases:** none


## Frequently asked questions

### Is UpDown free?

UpDown is free to download, with in-app purchases available.

### Is Body Mass free?

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

### Which has better reviews, UpDown or Body Mass?

Body Mass is rated higher. UpDown averages 4.4 out of 5 from 16 ratings, while Body Mass averages 5.0 from 3 ratings.

### Do UpDown or Body Mass have ads?

Neither UpDown nor Body Mass shows ads.

### Which is updated more often, UpDown or Body Mass?

UpDown ships an update every 4 weeks, and Body Mass every 5 months. Most recently, UpDown was updated on October 24, 2026 and Body Mass on October 24, 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.*