# Kstyle OS vs Master Watch Pro

The clearest difference is rating: Master Watch Pro at 5.0 against Kstyle OS's 3.4. Master Watch Pro also leads on iOS requirement (9.0 vs 15.6). Kstyle OS's advantage is ratings volume (17 vs 1). On price, update cadence, 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.

Master Watch Pro holds the better App Store score, 5.0 against 3.4. That said, the two scores are not equally well evidenced: Kstyle OS has 17 ratings behind it against 1, so its average is the more settled of the two.

Both ship on a similar rhythm, roughly every 3 days. The most recent releases landed on November 4, 2026 and November 5, 2026 respectively.

## The numbers

| Metric | Kstyle OS | Master Watch Pro |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [3.4 (17 ratings)](https://appshunter.io/ios/app/kstyle-os/id6503945039/reviews) | **[5.0 (1 ratings)](https://appshunter.io/ios/app/master-watch-pro/id6756710393/reviews)** |
| Number of ratings | **17** | 1 |
| Positive reviews | 31.3% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 3 days | Every 3 days |
| Monetization | Free | Free |
| Size | 252 MB | 431 MB |
| Requires iOS | 15.6 | **9.0** |
| Devices | iPhone, iPod | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [上海凯斯领拓技术有限公司](https://appshunter.io/developer/1696907877) | [osama tallal](https://appshunter.io/developer/1862446147) |

## What reviewers say

### Kstyle OS

[App page](https://appshunter.io/ios/app/kstyle-os/id6503945039)

This companion app syncs with a specific smartwatch to display incoming calls and messages, allowing quick replies. It also tracks fitness data like steps and distance, and lets you set alarms and reminders on your watch. Designed for general fitness, not medical use.

**Highlights:** Incoming call and SMS/MMS push, Quick reply to rejected calls, Step data recording and charting, Distance tracking, Set smartwatch reminders and alarms

**Features:** Vision Pro support

**In-app purchases:** none


### Master Watch Pro

[App page](https://appshunter.io/ios/app/master-watch-pro/id6756710393)

This app syncs with your smartwatch to track daily activity, sleep patterns, and vital health metrics like heart rate and stress levels. It also provides weather updates, call/message management, and health tips.

**Highlights:** Exercise and sleep tracking, Weather and time display, Call and message management, Social notification alerts, 24-hour heart rate monitoring, Stress monitoring, Health tips

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Kstyle OS free?

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

### Is Master Watch Pro free?

Master Watch Pro is free to download, with no in-app purchases.

### Which has better reviews, Kstyle OS or Master Watch Pro?

Master Watch Pro is rated higher. Kstyle OS averages 3.4 out of 5 from 17 ratings, while Master Watch Pro averages 5.0 from 1 ratings.

### Do Kstyle OS or Master Watch Pro have ads?

Neither Kstyle OS nor Master Watch Pro shows ads.

### Which is updated more often, Kstyle OS or Master Watch Pro?

Kstyle OS ships an update every 3 days, and Master Watch Pro every 3 days. Most recently, Kstyle OS was updated on November 4, 2026 and Master Watch Pro on November 5, 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.*