# KSIX Pro vs QSR

The clearest difference is ads: KSIX Pro at none against QSR's shown. QSR's advantage is update cadence (fortnightly vs every 6 weeks). On price, in-app purchases, device support and iOS requirement there is nothing between them.

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

KSIX Pro ships an update every 6 weeks, QSR fortnightly. The most recent releases landed on October 6, 2026 and October 2, 2026 respectively.

## The numbers

| Metric | KSIX Pro | QSR |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | 50.0% of reviews | — |
| In-app purchases | No | No |
| Ads | **No** | Yes |
| Update frequency | Every 6 weeks | **Fortnightly** |
| Monetization | Free | — |
| Size | 432 MB | 53 MB |
| Requires iOS | 14.0 | 14.0.0 |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [KSIX](https://appshunter.io/developer/1775877151) | [International Quality Solution Register, S.A. de C.V.](https://appshunter.io/developer/1798369277) |

## What reviewers say

### KSIX Pro

[App page](https://appshunter.io/ios/app/ksix-pro/id6511223790)

This app syncs with compatible smartwatches to track your health metrics, sleep patterns, and sports performance. It also manages notifications and calls from your phone, offering a comprehensive overview of your well-being and connectivity.

**Highlights:** Health monitoring (heart rate, blood oxygen), Sleep analysis, Sports performance tracking, Workout synchronization, Notification management, Call synchronization

**Features:** macOS Compatibility

**In-app purchases:** none


### QSR

[App page](https://appshunter.io/ios/app/qsr/id6742431276)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is KSIX Pro free?

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

### Is QSR free?

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

### Do KSIX Pro or QSR have ads?

QSR shows ads; KSIX Pro does not.

### Which is updated more often, KSIX Pro or QSR?

KSIX Pro ships an update every 6 weeks, and QSR fortnightly. Most recently, KSIX Pro was updated on October 6, 2026 and QSR on October 2, 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.*