# BLACKUP 블랙업 vs WHO.A.U

The clearest difference is ads: BLACKUP 블랙업 at none against WHO.A.U's shown. BLACKUP 블랙업 also leads on review sentiment (34% vs 25%). WHO.A.U's advantage is update cadence (every 3 weeks vs every 2 months). On price, in-app purchases, monetization model 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.

BLACKUP 블랙업 ships an update every 2 months, WHO.A.U every 3 weeks. The most recent releases landed on November 2, 2026 and November 3, 2026 respectively.

## The numbers

| Metric | BLACKUP 블랙업 | WHO.A.U |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.3 (15 ratings)](https://appshunter.io/ios/app/blackup/id1342518152/reviews)** | — |
| Number of ratings | **15** | — |
| Positive reviews | **33.8% of reviews** | 25.0% of reviews |
| In-app purchases | No | No |
| Ads | **No** | Yes |
| Update frequency | Every 2 months | **Every 3 weeks** |
| Monetization | Ad-supported | Ad-supported |
| Size | 72 MB | 84 MB |
| Requires iOS | 14.0 | 14.0 |
| Devices | iPhone, iPod | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [BLACKUP](https://appshunter.io/developer/1342518151) | [Seulgi Koo](https://appshunter.io/developer/1896476085) |

## 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


### WHO.A.U

[App page](https://appshunter.io/ios/app/whoau/id1609903692)

Access exclusive coupons, discounts, and special offers directly from your mobile device. Manage your shopping cart, track orders, and receive store notifications with ease. Enjoy automatic login and quick access to customer service and social media channels.

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

**In-app purchases:** none


## Frequently asked questions

### Is BLACKUP 블랙업 free?

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

### Is WHO.A.U free?

WHO.A.U is free to download, with no in-app purchases.

### Do BLACKUP 블랙업 or WHO.A.U have ads?

WHO.A.U shows ads; BLACKUP 블랙업 does not.

### Which is updated more often, BLACKUP 블랙업 or WHO.A.U?

BLACKUP 블랙업 ships an update every 2 months, and WHO.A.U every 3 weeks. Most recently, BLACKUP 블랙업 was updated on November 2, 2026 and WHO.A.U on November 3, 2026.

---

*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*