Comparison

Kstyle OS vs Master Watch Pro

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

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.

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
Read full description

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.

About

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.

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
Read full description

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

Kstyle OS3 screens
Master Watch Pro4 screens

Verdict

The call

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

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

ReceptionRating · Positive reviews · Number of ratings

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.

UpkeepUpdate frequency

Both ship on a similar rhythm, roughly every 3 days. The most recent releases landed on November 4, 2026 and October 30, 2026 respectively.

Scorecard3 real differences · 7 level
Kstyle OS versus Master Watch Pro: the parameters behind the verdict, then further details
ParameterKstyle OSMaster Watch Pro
PriceFreeFree
Rating3.4 (17 ratings)5.0 (1 ratings) — better
Positive reviews31.3% of reviews—
Number of ratings17 — better1
Update frequencyEvery 3 daysEvery 3 days
AdsNoNo
In-app purchasesNoNo
MonetizationFreeFree
DevicesiPhone, iPodiPhone, iPod
Requires iOS15.69.0 — better
Further details — not scored
Size252 MB431 MB
Age rating4+4+
Developer上海凯斯领拓技术有限公司osama tallal

Customer experience

Kstyle OS

All ratings17 ratings
Positive58.8%
Neutral5.9%
Negative35.3%
Written reviews16 reviews
Positive31.3%
Neutral0.0%
Negative68.8%

Master Watch Pro

All ratings1 ratings
Positive100.0%
Neutral0.0%
Negative0.0%

In-app purchases

None

Kstyle OS

No in-app purchases

None

Master Watch Pro

No in-app purchases

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 October 30, 2026.

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