# CJ ONE vs KT 스팸차단

The clearest difference is review sentiment: CJ ONE at 71% against KT 스팸차단's 22%. CJ ONE also leads on update cadence (monthly vs every 5 months). KT 스팸차단's advantage is rating (4.1 vs 3.5) and ads (none vs shown). On price, in-app purchases, device support and iOS requirement there is nothing between them.

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

KT 스팸차단 holds the better App Store score, 4.1 against 3.5. Both are backed by a comparable volume of ratings — 37 and 135 respectively. Written reviews complicate that: 71% of CJ ONE's written reviews are positive against 22% of KT 스팸차단's, so the app with the better star average is not the one people write more warmly about.

CJ ONE ships an update monthly, KT 스팸차단 every 5 months. The most recent releases landed on October 13, 2026 and October 14, 2026 respectively.

## The numbers

| Metric | CJ ONE | KT 스팸차단 |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [3.5 (37 ratings)](https://appshunter.io/ios/app/cj-one/id387363739/reviews) | **[4.1 (135 ratings)](https://appshunter.io/ios/app/kt/id397692999/reviews)** |
| Number of ratings | 37 | **135** |
| Positive reviews | **71.3% of reviews** | 21.9% of reviews |
| In-app purchases | No | No |
| Ads | Yes | **No** |
| Update frequency | **Monthly** | Every 5 months |
| Monetization | Free with in-app purchases | **Free** |
| Size | 176 MB | 12 MB |
| Requires iOS | **15.0** | 15.6 |
| Devices | **iPhone, iPod, Apple Watch** | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [CJ OliveNetworks Co., Ltd.](https://appshunter.io/developer/692699879) | [KT Corporation](https://appshunter.io/developer/335129223) |

## What reviewers say

### CJ ONE

[App page](https://appshunter.io/ios/app/cj-one/id387363739)

This lifestyle membership service offers exclusive benefits, special experiences, and rewards. Enjoy personalized deals, brand coupons, and convenient point accumulation and redemption through a mobile barcode. Engage in daily missions for extra points and rewards.

**Highlights:** Personalized benefit community, Brand coupons for dining, shopping, culture, Mobile barcode for points and gift cards, Daily missions for points (roulette, games, steps), Point accumulation and redemption, Gift card registration and usage

**Features:** Apple Watch app

**In-app purchases:** none

**What reviewers like**

- 👍 Convenient point management
- 👍 Easy to use
- 👍 Good for checking points
- 👍 Useful for coupons
- 👍 Good event participation

**What reviewers complain about**

- 🐛 Frequent app crashes
- 🐛 Slow loading times
- 🐛 High battery usage
- 🐛 Frequent UI changes
- 🐛 Difficulty finding menus

**Reported bugs**

- App crashes on startup
- App freezes
- ARS authentication repeatedly required
- App not updating
- Gift card scratch number not visible

**Requested features**

- Change password rules
- Email masking feature
- Improve UI consistency
- Fix ARS authentication issues
- Improve gift card scratch number visibility


### 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


## Frequently asked questions

### Is CJ ONE free?

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

### Is KT 스팸차단 free?

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

### Which has better reviews, CJ ONE or KT 스팸차단?

KT 스팸차단 is rated higher. CJ ONE averages 3.5 out of 5 from 37 ratings, while KT 스팸차단 averages 4.1 from 135 ratings.

### Do CJ ONE or KT 스팸차단 have ads?

CJ ONE shows ads; KT 스팸차단 does not.

### Which is updated more often, CJ ONE or KT 스팸차단?

CJ ONE ships an update monthly, and KT 스팸차단 every 5 months. Most recently, CJ ONE was updated on October 13, 2026 and KT 스팸차단 on October 14, 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.*