# KT 스팸차단 vs Washswat

The clearest difference is review sentiment: Washswat at 94% against KT 스팸차단's 22%. Washswat also leads on rating (4.7 vs 4.1) and update cadence (every 4 weeks vs every 5 months). On price, ratings volume, ads and in-app purchases there is nothing between them.

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

Washswat holds the better App Store score, 4.7 against 4.1. Both are backed by a comparable volume of ratings — 135 and 373 respectively. Written reviews point the same way: 22% of KT 스팸차단's written reviews are positive against 94% of Washswat's.

KT 스팸차단 ships an update every 5 months, Washswat every 4 weeks. Both last shipped on October 26, 2026.

## The numbers

| Metric | KT 스팸차단 | Washswat |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.1 (135 ratings)](https://appshunter.io/ios/app/kt/id397692999/reviews) | **[4.7 (373 ratings)](https://appshunter.io/ios/app/washswat/id1049236217/reviews)** |
| Number of ratings | 135 | **373** |
| Positive reviews | 21.9% of reviews | **93.7% of reviews** |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 5 months | **Every 4 weeks** |
| Monetization | Free | Free |
| Size | 12 MB | 114 MB |
| Requires iOS | 15.6 | 15.6 |
| Devices | iPhone, iPod | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [KT Corporation](https://appshunter.io/developer/335129223) | [(주)워시스왓](https://appshunter.io/developer/1049236216) |

## What reviewers say

### KT 스팸차단

[App page](https://appshunter.io/ios/app/kt/id397692999)

Manage and review KT SMS/MMS spam messages. Register custom block numbers and phrases, or utilize community-ranked lists for smart filtering. Allows for whitelisting numbers and reviewing filtered messages.

**Highlights:** Block custom numbers, Block custom phrases, Community-ranked block lists, Smart spam filtering, Review filtered messages, Whitelist numbers, Address book integration

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

**In-app purchases:** none


### Washswat

[App page](https://appshunter.io/ios/app/washswat/id1049236217)

This app provides a top-rated dry-cleaning and laundry service. It offers convenient solutions for garment care, making it the leading choice in Korea.

**Highlights:** Dry-cleaning services, Laundry services, Garment care solutions, Convenient pickup and delivery

**Features:** Vision Pro support

**In-app purchases:** none

**What reviewers like**

- 👍 Convenient and easy to use
- 🚀 Fast and efficient service
- 🔍 Detailed tracking and updates
- 🧹 High-quality cleaning results
- 💳 Reasonable pricing

**What reviewers complain about**

- 🐛 Occasional issues with damaged or mishandled items
- 🕰️ Longer turnaround time for some specialized services
- 💰 Perceived high prices for premium services

**Reported bugs**

- Login and authentication problems for some users
- Inconsistent app performance on older devices

**Requested features**

- Expanded pickup and delivery time options
- More customization for specialized cleaning requests
- Improved communication on status updates


## Frequently asked questions

### Is KT 스팸차단 free?

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

### Is Washswat free?

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

### Which has better reviews, KT 스팸차단 or Washswat?

Washswat is rated higher. KT 스팸차단 averages 4.1 out of 5 from 135 ratings, while Washswat averages 4.7 from 373 ratings.

### Do KT 스팸차단 or Washswat have ads?

Neither KT 스팸차단 nor Washswat shows ads.

### Which is updated more often, KT 스팸차단 or Washswat?

KT 스팸차단 ships an update every 5 months, and Washswat every 4 weeks. Most recently, KT 스팸차단 was updated on October 26, 2026 and Washswat on October 26, 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.*