# 도전다이어트 vs REJULIFT

The clearest difference is update cadence: 도전다이어트 at every 2 weeks against REJULIFT's every 6 weeks. REJULIFT's advantage is iOS requirement (14.0.0 vs 16.5). 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.

도전다이어트 ships an update every 2 weeks, REJULIFT every 6 weeks. Both last shipped on September 17, 2026.

## The numbers

| Metric | 도전다이어트 | REJULIFT |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 2 weeks** | Every 6 weeks |
| Size | 95 MB | 102 MB |
| Requires iOS | 16.5 | **14.0.0** |
| Devices | iPhone | **iPhone, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [SPS HOLDINGS Corp.](https://appshunter.io/developer/1713671248) | [PharmaResearch Co., Ltd.](https://appshunter.io/developer/1690749382) |

## What reviewers say

### 도전다이어트

[App page](https://appshunter.io/ios/app/id6470971108)

**Features:** macOS Compatibility

**In-app purchases:** none


### REJULIFT

[App page](https://appshunter.io/ios/app/rejulift/id6738943712)

**In-app purchases:** none


## Frequently asked questions

### Is 도전다이어트 free?

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

### Is REJULIFT free?

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

### Do 도전다이어트 or REJULIFT have ads?

Neither 도전다이어트 nor REJULIFT shows ads.

### Which is updated more often, 도전다이어트 or REJULIFT?

도전다이어트 ships an update every 2 weeks, and REJULIFT every 6 weeks. Most recently, 도전다이어트 was updated on September 17, 2026 and REJULIFT on September 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.*