# 듀얼헬스 vs b1of

The clearest difference is update cadence: 듀얼헬스 at every 2 days against b1of's every 3 weeks. 듀얼헬스 also leads on iOS requirement (13.4 vs 15.0). 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.

듀얼헬스 ships an update every 2 days, b1of every 3 weeks. The most recent releases landed on October 14, 2026 and October 4, 2026 respectively.

## The numbers

| Metric | 듀얼헬스 | b1of |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 2 days** | Every 3 weeks |
| Size | 14 MB | 64 MB |
| Requires iOS | **13.4** | 15.0 |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 12+ | 9+ |
| Developer | [듀얼헬스케어](https://appshunter.io/developer/1542131900) | [JAE HYUN JUNG](https://appshunter.io/developer/1869234871) |

## What reviewers say

### 듀얼헬스

[App page](https://appshunter.io/ios/app/id6504740154)

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

**In-app purchases:** none


### b1of

[App page](https://appshunter.io/ios/app/b1of/id6757843939)

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

**In-app purchases:** none


## Frequently asked questions

### Is 듀얼헬스 free?

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

### Is b1of free?

b1of is free to download, with no in-app purchases.

### Do 듀얼헬스 or b1of have ads?

Neither 듀얼헬스 nor b1of shows ads.

### Which is updated more often, 듀얼헬스 or b1of?

듀얼헬스 ships an update every 2 days, and b1of every 3 weeks. Most recently, 듀얼헬스 was updated on October 14, 2026 and b1of on October 4, 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.*