# SindohSmartUPrint vs LK 워치키보드

The clearest difference is price: SindohSmartUPrint at Free against LK 워치키보드's $5.99. SindohSmartUPrint also leads on iOS requirement (8.1 vs 13.0). On update cadence, ads, in-app purchases and device support there is nothing between them.

SindohSmartUPrint is free to download; LK 워치키보드 costs $5.99 up front. Neither carries in-app purchases, so what you see is what you pay.

SindohSmartUPrint ships an update fortnightly, LK 워치키보드 every 3 weeks. The most recent releases landed on October 14, 2026 and October 25, 2026 respectively.

## The numbers

| Metric | SindohSmartUPrint | LK 워치키보드 |
| --- | --- | --- |
| Price | **Free** | $5.99 |
| Positive reviews | — | 58.3% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Fortnightly** | Every 3 weeks |
| Monetization | — | Paid |
| Size | 26 MB | 1 MB |
| Requires iOS | **8.1** | 13.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPod, Apple Watch |
| Age rating | 17+ | 4+ |
| Developer | [SINDOH Co., Ltd.](https://appshunter.io/developer/487975883) | [Park Sung Cheol](https://appshunter.io/developer/328258577) |

## What reviewers say

### SindohSmartUPrint

[App page](https://appshunter.io/ios/app/sindohsmartuprint/id1281777897)

**Features:** macOS Compatibility

**In-app purchases:** none


### 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


## Frequently asked questions

### Is SindohSmartUPrint free?

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

### Is LK 워치키보드 free?

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

### Do SindohSmartUPrint or LK 워치키보드 have ads?

Neither SindohSmartUPrint nor LK 워치키보드 shows ads.

### Which is updated more often, SindohSmartUPrint or LK 워치키보드?

SindohSmartUPrint ships an update fortnightly, and LK 워치키보드 every 3 weeks. Most recently, SindohSmartUPrint was updated on October 14, 2026 and LK 워치키보드 on October 25, 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.*