# KS OS vs RoundLog

The clearest difference is rating: RoundLog at 5.0 against KS OS's 3.3. RoundLog also leads on update cadence (every 2 weeks vs every 4 weeks). KS OS's advantage is in-app purchases (none vs 3) and ratings volume (51 vs 1). On price and ads there is nothing between them.

Both are free to download. RoundLog sells 3 in-app purchases, starting at $4.99 per 7 days. KS OS asks for nothing beyond the download.

RoundLog holds the better App Store score, 5.0 against 3.3. That said, the two scores are not equally well evidenced: KS OS has 51 ratings behind it against 1, so its average is the more settled of the two.

KS OS ships an update every 4 weeks, RoundLog every 2 weeks. The most recent releases landed on November 12, 2026 and November 10, 2026 respectively.

## The numbers

| Metric | KS OS | RoundLog |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [3.3 (51 ratings)](https://appshunter.io/ios/app/ks-os/id6451134361/reviews) | **[5.0 (1 ratings)](https://appshunter.io/ios/app/roundlog-boxing-timer-and-log/id6788696079/reviews)** |
| Number of ratings | **51** | 1 |
| Positive reviews | 17.9% of reviews | — |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 4 weeks | **Every 2 weeks** |
| Monetization | **Free** | Freemium |
| Size | 198 MB | 19 MB |
| Requires iOS | **13.0** | 17.0 |
| Devices | **iPhone, iPad, iPod** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [上海凯斯领拓技术有限公司](https://appshunter.io/developer/1696907877) | [Yavuz Aytekin](https://appshunter.io/developer/1639184529) |

## 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


### RoundLog

[App page](https://appshunter.io/ios/app/roundlog-boxing-timer-and-log/id6788696079)

Track your boxing, kickboxing, and Muay Thai training sessions with a background timer and detailed logging. Record rounds, combos, and progress with insightful analytics. Offers a free tier with core features and an optional Pro subscription for advanced functionality.

**Highlights:** Background round timer, Sparring journal, Combo notebook with spaced repetition, Progress dashboard, Unlimited training logs (Pro), CSV export (Pro)

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| RoundLog Pro (Weekly) | $4.99 | per 7 days |
| RoundLog Pro | $11.99 | per month |
| RoundLog Pro (Yearly) | $49.99 | per year |


## Frequently asked questions

### Is KS OS free?

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

### Is RoundLog free?

RoundLog is free to download, with in-app purchases available.

### Which has better reviews, KS OS or RoundLog?

RoundLog is rated higher. KS OS averages 3.3 out of 5 from 51 ratings, while RoundLog averages 5.0 from 1 ratings.

### Do KS OS or RoundLog have ads?

Neither KS OS nor RoundLog shows ads.

### Which is updated more often, KS OS or RoundLog?

KS OS ships an update every 4 weeks, and RoundLog every 2 weeks. Most recently, KS OS was updated on November 12, 2026 and RoundLog on November 10, 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.*