# KS OS vs RMX

The clearest difference is iOS requirement: KS OS at 13.0 against RMX's 15.1. On price, ads, in-app purchases and device support there is nothing between them.

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

## The numbers

| Metric | KS OS | RMX |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[3.3 (50 ratings)](https://appshunter.io/ios/app/ks-os/id6451134361/reviews)** | — |
| Number of ratings | **50** | — |
| Positive reviews | 17.9% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 4 weeks | — |
| Monetization | Free | — |
| Size | 198 MB | 79 MB |
| Requires iOS | **13.0** | 15.1 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [上海凯斯领拓技术有限公司](https://appshunter.io/developer/1696907877) | [AvidAbility](https://appshunter.io/developer/1599026393) |

## What reviewers say

### KS OS

[App page](https://appshunter.io/ios/app/ks-os/id6451134361)

This app acts as your personal health steward, integrating health data, movement tracking, and wearable device control. Monitor sleep, record exercise, manage daily reminders, and customize your device's appearance. Share achievements and sync data with Apple Health.

**Highlights:** Health data recording, Movement track recording, Wearable device control, Sleep quality monitoring, Exercise and activity tracking, Customizable watch faces, Achievement sharing

**Features:** macOS Compatibility

**In-app purchases:** none


### RMX

[App page](https://appshunter.io/ios/app/rmx/id6670220161)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is KS OS free?

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

### Is RMX free?

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

### Do KS OS or RMX have ads?

Neither KS OS nor RMX shows ads.

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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.*