# CJ ONE vs Bill Letter

The clearest difference is review sentiment: CJ ONE at 71% against Bill Letter's 36%. CJ ONE also leads on rating (3.5 vs 3.3). Bill Letter's advantage is ads (none vs shown) and monetization model (ad-supported vs free with in-app purchases). On price, ratings volume, update cadence 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.

CJ ONE holds the better App Store score, 3.5 against 3.3. Both are backed by a comparable volume of ratings — 37 and 15 respectively. Written reviews point the same way: 71% of CJ ONE's written reviews are positive against 36% of Bill Letter's.

CJ ONE ships an update monthly, Bill Letter every 2 months. The most recent releases landed on October 27, 2026 and October 23, 2026 respectively.

## The numbers

| Metric | CJ ONE | Bill Letter |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[3.5 (37 ratings)](https://appshunter.io/ios/app/cj-one/id387363739/reviews)** | [3.3 (15 ratings)](https://appshunter.io/ios/app/bill-letter/id435060754/reviews) |
| Number of ratings | **37** | 15 |
| Positive reviews | **71.3% of reviews** | 35.6% of reviews |
| In-app purchases | No | No |
| Ads | Yes | **No** |
| Update frequency | **Monthly** | Every 2 months |
| Monetization | Free with in-app purchases | **Ad-supported** |
| Size | 176 MB | 34 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) | [SK Telecom](https://appshunter.io/developer/329992155) |

## 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


### Bill Letter

[App page](https://appshunter.io/ios/app/bill-letter/id435060754)

Manage various bills and benefits from paper or email in one smart app. Track real-time charges, payment history, and access exclusive offers. Reduce personal information exposure by receiving bills digitally.

**Highlights:** Consolidated bill management, Real-time charge tracking, Multiple payment options, Card point and dormant deposit inquiry, Personalized recommendations and events, Secure digital bill delivery

**Features:** 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 Bill Letter free?

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

### Which has better reviews, CJ ONE or Bill Letter?

CJ ONE is rated higher. CJ ONE averages 3.5 out of 5 from 37 ratings, while Bill Letter averages 3.3 from 15 ratings.

### Do CJ ONE or Bill Letter have ads?

CJ ONE shows ads; Bill Letter does not.

### Which is updated more often, CJ ONE or Bill Letter?

CJ ONE ships an update monthly, and Bill Letter every 2 months. Most recently, CJ ONE was updated on October 27, 2026 and Bill Letter on October 23, 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.*