# HiFuture Fit vs CK OS

The clearest difference is rating: CK OS at 5.0 against HiFuture Fit's 4.5. CK OS also leads on update cadence (fortnightly vs every 2 months). HiFuture Fit's advantage is ratings volume (40 vs 1). 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.

CK OS holds the better App Store score, 5.0 against 4.5. That said, the two scores are not equally well evidenced: HiFuture Fit has 40 ratings behind it against 1, so its average is the more settled of the two.

HiFuture Fit ships an update every 2 months, CK OS fortnightly. The most recent releases landed on November 10, 2026 and October 30, 2026 respectively.

## The numbers

| Metric | HiFuture Fit | CK OS |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.5 (40 ratings)](https://appshunter.io/ios/app/hifuture-fit/id6453360806/reviews) | **[5.0 (1 ratings)](https://appshunter.io/ios/app/ck-os/id6667112670/reviews)** |
| Number of ratings | **40** | 1 |
| Positive reviews | 44.4% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 2 months | **Fortnightly** |
| Monetization | Free | Free |
| Size | 335 MB | 255 MB |
| Requires iOS | 13.0 | 13.0 |
| Devices | iPhone, iPod | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Shenzhen Future Access Technology Co., Ltd.](https://appshunter.io/developer/1699316143) | [Shenzhen Aienmi Technology Co., Ltd.](https://appshunter.io/developer/1761782444) |

## What reviewers say

### HiFuture Fit

[App page](https://appshunter.io/ios/app/hifuture-fit/id6453360806)

Monitor your sleep and exercise in real-time to manage your daily health. Set goals and track progress to improve your life's rhythm. Supports HealthKit integration for iOS devices.

**Highlights:** Real-time sleep monitoring, Exercise status tracking, Daily goal setting, HealthKit integration, Improved life rhythm management

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

**In-app purchases:** none


### CK OS

[App page](https://appshunter.io/ios/app/ck-os/id6667112670)

Track your workouts with personalized plans and real-time data analysis. Monitor your health with heart rate and sleep tracking, and sync with other health platforms. Achieve your fitness goals with this comprehensive exercise companion.

**Highlights:** Multiple exercise modes, Real-time data tracking, Personalized training plans, Health monitoring, Data synchronization with Apple Health

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is HiFuture Fit free?

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

### Is CK OS free?

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

### Which has better reviews, HiFuture Fit or CK OS?

CK OS is rated higher. HiFuture Fit averages 4.5 out of 5 from 40 ratings, while CK OS averages 5.0 from 1 ratings.

### Do HiFuture Fit or CK OS have ads?

Neither HiFuture Fit nor CK OS shows ads.

### Which is updated more often, HiFuture Fit or CK OS?

HiFuture Fit ships an update every 2 months, and CK OS fortnightly. Most recently, HiFuture Fit was updated on November 10, 2026 and CK 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.*