# ZEROBODY vs Woonsigi

The clearest difference is in-app purchases: ZEROBODY at none against Woonsigi's 1. Woonsigi's advantage is update cadence (weekly vs every 3 months) and iOS requirement (13.0 vs 15.1). On price, ads and device support there is nothing between them.

Both are free to download. Woonsigi sells 1 in-app purchase, starting at $0.49 per month. ZEROBODY asks for nothing beyond the download.

ZEROBODY ships an update every 3 months, Woonsigi weekly. The most recent releases landed on October 21, 2026 and October 17, 2026 respectively.

## The numbers

| Metric | ZEROBODY | Woonsigi |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | 27.3% of reviews | — |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 3 months | **Weekly** |
| Monetization | Free | — |
| Size | 66 MB | 45 MB |
| Requires iOS | 15.1 | **13.0** |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [주식회사 엘디유오](https://appshunter.io/developer/1813138419) | [Haeji Jang](https://appshunter.io/developer/1531494141) |

## What reviewers say

### ZEROBODY

[App page](https://appshunter.io/ios/app/zerobody/id6745605993)

This app connects to your HeavenStepper via Bluetooth to track your workouts in real-time. Set fitness goals, monitor your progress, and manage multiple user profiles for a smarter fitness routine. It also allows you to log and track your weight changes.

**Highlights:** Real-time workout data tracking, Goal setting and progress monitoring, Workout history and record management, Multi-user profile support, Weight logging and tracking

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases:** none


### Woonsigi

[App page](https://appshunter.io/ios/app/woonsigi/id6746924494)

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 운식이 프리미엄 월간 구독 | $0.49 | per month |


## Frequently asked questions

### Is ZEROBODY free?

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

### Is Woonsigi free?

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

### Do ZEROBODY or Woonsigi have ads?

Neither ZEROBODY nor Woonsigi shows ads.

### Which is updated more often, ZEROBODY or Woonsigi?

ZEROBODY ships an update every 3 months, and Woonsigi weekly. Most recently, ZEROBODY was updated on October 21, 2026 and Woonsigi on October 17, 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.*