Kstyle OS vs Master Watch Pro
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Kstyle OS
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.
- Incoming call and SMS/MMS push
- Quick reply to rejected calls
- Step data recording and charting
- Distance tracking
- Set smartwatch reminders and alarms
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The Kstyle OS APP is a companion application of the "Kieslect" smartwatch, with the following functions: One of the main functions of the APP is to push incoming calls and SMS/MMS received by the phone to the associated smartwatch, so that you can answer and view SMS/MMS on the watch end; When the watch terminal rejects a call, it can quickly reply, and the APP will send a pre configured SMS to the caller. It should be noted that the application will request "SMS and call record permissions" to implement these functions, and without these permissions, the application will not be able to use them. 2. Record the step data collected by the smartwatch, including step count, step frequency, and distance, and display them in the form of line charts and bar charts; 3. Set reminders and alarms for your smartwatch. 4. Not for medical use, only for general fitness/health purposes Disclaimer: This application aims to assist users in managing and monitoring health data, supporting a healthy lifestyle. However, this application is for general health reference only and cannot replace professional medical advice. Before using this application or making any medical decisions, please be sure to consult a professional doctor. We do not assume responsibility for any health issues arising from reliance on the information provided by this application.
Master Watch Pro
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.
- Exercise and sleep tracking
- Weather and time display
- Call and message management
- Social notification alerts
- 24-hour heart rate monitoring
- Stress monitoring
- Health tips
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The Mater Watch Pro app, paired with your smartwatch, can record your daily exercise and sleep, check the weather and time, manage incoming calls, text messages and social notifications, and also provide 24-hour heart rate and stress monitoring, along with helpful tips to safeguard your health.
Screenshots
Verdict
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.
Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS
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 October 30, 2026 respectively.
| Parameter | Kstyle OS | Master Watch Pro |
|---|---|---|
| Price | Free | Free |
| Rating | 3.4 (17 ratings) | 5.0 (1 ratings) — better |
| Positive reviews | 31.3% of reviews | — |
| Number of ratings | 17 — better | 1 |
| Update frequency | Every 3 days | Every 3 days |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free | Free |
| Devices | iPhone, iPod | iPhone, iPod |
| Requires iOS | 15.6 | 9.0 — better |
| Further details — not scored | ||
| Size | 252 MB | 431 MB |
| Age rating | 4+ | 4+ |
| Developer | 上海凯斯领拓技术有限公司 | osama tallal |
Customer experience
Kstyle OS
Master Watch Pro
In-app purchases
Kstyle OS
No in-app purchases
Master Watch Pro
No in-app purchases








