# AUKEY Fit Pro vs Kstyle OS

AUKEY Fit Pro and Kstyle OS both sit at 3.3 stars, but that hides the real split: 31% of Kstyle OS's written reviews are positive against 0% of AUKEY Fit Pro's. Kstyle OS also leads on update cadence (every 3 days vs every 3 months). AUKEY Fit Pro's advantage is iOS requirement (12.0 vs 15.6). On price, rating, ratings volume and ads there is nothing between them.

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

On the App Store both sit at effectively the same score — 3.3 for AUKEY Fit Pro against 3.4 for Kstyle OS. Both are backed by a comparable volume of ratings — 11 and 17 respectively. Written reviews are what separate them: 0% of AUKEY Fit Pro's written reviews are positive against 31% of Kstyle OS's.

AUKEY Fit Pro ships an update every 3 months, Kstyle OS every 3 days. The most recent releases landed on November 3, 2026 and November 8, 2026 respectively.

## The numbers

| Metric | AUKEY Fit Pro | Kstyle OS |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [3.3 (11 ratings)](https://appshunter.io/ios/app/aukey-fit-pro/id1659794594/reviews) | **[3.4 (17 ratings)](https://appshunter.io/ios/app/kstyle-os/id6503945039/reviews)** |
| Number of ratings | 11 | **17** |
| Positive reviews | 0.0% of reviews | **31.3% of reviews** |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 3 months | **Every 3 days** |
| Monetization | Free | Free |
| Size | 566 MB | 252 MB |
| Requires iOS | **12.0** | 15.6 |
| Devices | iPhone, iPod | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Aukey Business Co.,Ltd.](https://appshunter.io/developer/894975123) | [上海凯斯领拓技术有限公司](https://appshunter.io/developer/1696907877) |

## What reviewers say

### AUKEY Fit Pro

[App page](https://appshunter.io/ios/app/aukey-fit-pro/id1659794594)

This app syncs your smartwatch data, including steps, heart rate, and sleep, with an intuitive new interface. It also allows you to receive phone notifications on your watch and configure various watch settings like alarms and weather updates.

**Highlights:** Sync steps, calories, mileage, heart rate, and sleep, Display exercise records intuitively, Push incoming calls and SMS to watch, Configure sedentary alerts and alarms, Sync weather and AGPS files, Integrates with iPhone Health

**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 smartwatch to display incoming calls and messages, allowing quick replies. It also tracks fitness data like steps and distance, and manages watch alarms and reminders for general health monitoring.

**Highlights:** Incoming call and SMS/MMS notifications, Quick SMS replies for rejected calls, Step count, frequency, and distance tracking, Fitness data visualization (line/bar charts), Smartwatch alarm and reminder settings

**Features:** Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is AUKEY Fit Pro free?

AUKEY Fit Pro 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, AUKEY Fit Pro or Kstyle OS?

Kstyle OS is rated higher. AUKEY Fit Pro averages 3.3 out of 5 from 11 ratings, while Kstyle OS averages 3.4 from 17 ratings.

### Do AUKEY Fit Pro or Kstyle OS have ads?

Neither AUKEY Fit Pro nor Kstyle OS shows ads.

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

AUKEY Fit Pro ships an update every 3 months, and Kstyle OS every 3 days. Most recently, AUKEY Fit Pro was updated on November 3, 2026 and Kstyle OS on November 8, 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.*