# BLACKUP 블랙업 vs YZ

The clearest difference is rating: YZ at 4.9 against BLACKUP 블랙업's 4.3. YZ also leads on review sentiment (48% vs 34%) and monetization model (free vs ad-supported). BLACKUP 블랙업's advantage is iOS requirement (14.0 vs 16.0). On price, ratings volume, update cadence and ads there is nothing between them.

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

YZ holds the better App Store score, 4.9 against 4.3. Both are backed by a comparable volume of ratings — 15 and 29 respectively. Written reviews point the same way: 34% of BLACKUP 블랙업's written reviews are positive against 48% of YZ's.

Both ship on a similar rhythm, roughly every 2 months. The most recent releases landed on September 20, 2026 and September 27, 2026 respectively.

## The numbers

| Metric | BLACKUP 블랙업 | YZ |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.3 (15 ratings)](https://appshunter.io/ios/app/blackup/id1342518152/reviews) | **[4.9 (29 ratings)](https://appshunter.io/ios/app/yz/id1660727477/reviews)** |
| Number of ratings | 15 | **29** |
| Positive reviews | 33.8% of reviews | **47.6% of reviews** |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 2 months | Every 2 months |
| Monetization | Ad-supported | **Free** |
| Size | 72 MB | 59 MB |
| Requires iOS | **14.0** | 16.0 |
| Devices | **iPhone, iPod** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [(주)블랙업](https://appshunter.io/developer/1342518151) | [yutori inc.](https://appshunter.io/developer/1591558355) |

## What reviewers say

### BLACKUP 블랙업

[App page](https://appshunter.io/ios/app/blackup/id1342518152)

Access exclusive discounts and special offers through this mobile application. Enjoy optimized features for on-the-go shopping, including automatic login, order tracking, and cart management. Stay updated with store notifications and connect with social media channels.

**Highlights:** Exclusive coupons and discounts, Automatic login, Order tracking, Shopping cart management, Store notifications, Social media access

**Features:** Vision Pro support

**In-app purchases:** none

**What reviewers like**

- 😍 Beautiful clothing
- 👍 Easy to use interface (for some)
- 🇰🇷 Korean language support
- ✅ Quick customer service response

**What reviewers complain about**

- 🐌 Extremely slow loading times
- 🐢 Significant lag and unresponsiveness
- ❌ Frequent crashes and errors
- 🗑️ Wishlist and cart items disappearing
- 🚫 Login issues and frequent logouts

**Reported bugs**

- App opens to a white screen
- Cannot open the home screen after update
- Login fails repeatedly
- Cannot access shopping cart
- Wishlist items disappear

**Requested features**

- Improve app speed and reduce lag
- Fix issues with wishlist and cart items disappearing
- Stabilize login and maintain login status
- Ensure consistent language settings
- Improve image loading performance


### YZ

[App page](https://appshunter.io/ios/app/yz/id1660727477)

Discover and shop for Japanese street fashion brands like 9090s, Younger Song, genzai, and MySugarBabe (MSB). This official app provides a curated selection of popular streetwear items for easy browsing and purchasing.

**Highlights:** Shop Japanese street brands, Curated fashion selection, Official store app, Easy browsing and purchasing

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

**In-app purchases:** none


## Frequently asked questions

### Is BLACKUP 블랙업 free?

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

### Is YZ free?

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

### Which has better reviews, BLACKUP 블랙업 or YZ?

YZ is rated higher. BLACKUP 블랙업 averages 4.3 out of 5 from 15 ratings, while YZ averages 4.9 from 29 ratings.

### Do BLACKUP 블랙업 or YZ have ads?

Neither BLACKUP 블랙업 nor YZ shows ads.

### Which is updated more often, BLACKUP 블랙업 or YZ?

BLACKUP 블랙업 ships an update every 2 months, and YZ every 2 months. Most recently, BLACKUP 블랙업 was updated on September 20, 2026 and YZ on September 27, 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.*