# Remax Fit vs Kstyle OS

The clearest difference is review sentiment: Remax Fit at 100% against Kstyle OS's 27%. Remax Fit also leads on rating (4.7 vs 3.5) and ratings volume (51 vs 15). Kstyle OS's advantage is update cadence (every 3 days vs every 6 weeks). On price, ads, in-app purchases and monetization model there is nothing between them.

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

Remax Fit holds the better App Store score, 4.7 against 3.5. Both are backed by a comparable volume of ratings — 51 and 15 respectively. Written reviews point the same way: 100% of Remax Fit's written reviews are positive against 27% of Kstyle OS's.

Remax Fit ships an update every 6 weeks, Kstyle OS every 3 days. The most recent releases landed on October 24, 2026 and October 30, 2026 respectively.

## The numbers

| Metric | Remax Fit | Kstyle OS |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.7 (51 ratings)](https://appshunter.io/ios/app/remax-fit/id6499425348/reviews)** | [3.5 (15 ratings)](https://appshunter.io/ios/app/kstyle-os/id6503945039/reviews) |
| Number of ratings | **51** | 15 |
| Positive reviews | **100.0% of reviews** | 26.7% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 6 weeks | **Every 3 days** |
| Monetization | Free | Free |
| Size | 121 MB | 251 MB |
| Requires iOS | **12.0** | 15.6 |
| Devices | iPhone, iPod | iPhone, iPod |
| Age rating | 12+ | 4+ |
| Developer | [腾飞 王](https://appshunter.io/developer/1445983614) | [上海凯斯领拓技术有限公司](https://appshunter.io/developer/1696907877) |

## What reviewers say

### Remax Fit

[App page](https://appshunter.io/ios/app/remax-fit/id6499425348)

Connect your Bluetooth bracelet to monitor real-time health data like heart rate and sleep. Track your exercise progress and manage device settings, including reminders and searches. The app integrates with HealthKit for seamless data syncing.

**Highlights:** HealthKit integration, Real-time heart rate monitoring, Sleep tracking, Exercise status display, Bracelet reminders, Device search, Factory reset

**Features:** macOS Compatibility

**In-app purchases:** none


### 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. It records and visualizes heart rate and motion data, and allows for smartwatch reminders and alarms. It's designed for general fitness tracking, not medical use.

**Highlights:** Incoming call and SMS/MMS push to smartwatch, Quick reply to rejected calls, Heart rate data recording and visualization, Motion data tracking (steps, distance), Smartwatch reminder and alarm settings, General fitness and health monitoring

**Features:** Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is Remax Fit free?

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

### Is Kstyle OS free?

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

### Which has better reviews, Remax Fit or Kstyle OS?

Remax Fit is rated higher. Remax Fit averages 4.7 out of 5 from 51 ratings, while Kstyle OS averages 3.5 from 15 ratings.

### Do Remax Fit or Kstyle OS have ads?

Neither Remax Fit nor Kstyle OS shows ads.

### Which is updated more often, Remax Fit or Kstyle OS?

Remax Fit ships an update every 6 weeks, and Kstyle OS every 3 days. Most recently, Remax Fit was updated on October 24, 2026 and Kstyle OS on October 30, 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.*