# LK 워치키보드 vs Secret File Box

The clearest difference is price: Secret File Box at Free against LK 워치키보드's $5.99. Secret File Box also leads on update cadence (every 4 days vs every 3 weeks). LK 워치키보드's advantage is in-app purchases (none vs 1). On ads, device support and iOS requirement there is nothing between them.

Secret File Box is free to download; LK 워치키보드 costs $5.99 up front. Secret File Box sells 1 one-off in-app purchase. LK 워치키보드 asks for nothing beyond the download.

LK 워치키보드 ships an update every 3 weeks, Secret File Box every 4 days. The most recent releases landed on October 30, 2026 and October 28, 2026 respectively.

## The numbers

| Metric | LK 워치키보드 | Secret File Box |
| --- | --- | --- |
| Price | $5.99 | **Free** |
| Positive reviews | 58.3% of reviews | — |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 3 weeks | **Every 4 days** |
| Monetization | Paid | — |
| Size | 1 MB | 33 MB |
| Requires iOS | 13.0 | 13.0 |
| Devices | iPhone, iPod, Apple Watch | iPhone, iPad, iPod |
| Age rating | 4+ | 12+ |
| Developer | [Park Sung Cheol](https://appshunter.io/developer/328258577) | [Shanghai Xuanxiang Zhixin Technology Co., Ltd](https://appshunter.io/developer/1624052409) |

## What reviewers say

### LK 워치키보드

[App page](https://appshunter.io/ios/app/lk/id6478436386)

This app offers a Korean keyboard layout for Apple Watch, mirroring the familiar iPhone keyboard. It allows for comfortable message sending with an intuitive design.

**Highlights:** Korean keyboard layout for Apple Watch, Familiar iPhone keyboard arrangement, Comfortable message sending, Intuitive design

**Features:** Apple Watch app

**In-app purchases:** none


### Secret File Box

[App page](https://appshunter.io/ios/app/secret-file-box/id6746269211)

**Features:** macOS Compatibility

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Premium Unlock | $9.99 | one-time |


## Frequently asked questions

### Is LK 워치키보드 free?

LK 워치키보드 costs $5.99, with no in-app purchases.

### Is Secret File Box free?

Secret File Box is free to download, with in-app purchases available.

### Do LK 워치키보드 or Secret File Box have ads?

Neither LK 워치키보드 nor Secret File Box shows ads.

### Which is updated more often, LK 워치키보드 or Secret File Box?

LK 워치키보드 ships an update every 3 weeks, and Secret File Box every 4 days. Most recently, LK 워치키보드 was updated on October 30, 2026 and Secret File Box on October 28, 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.*