# STF Kronos vs Flow Fit

The clearest difference is review sentiment: STF Kronos at 100% against Flow Fit's 4%. STF Kronos also leads on rating (4.7 vs 2.3). Flow Fit's advantage is update cadence (every 4 weeks vs every 2 months) and ratings volume (119 vs 9). 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.

STF Kronos holds the better App Store score, 4.7 against 2.3. That said, the two scores are not equally well evidenced: Flow Fit has 119 ratings behind it against 9, so its average is the more settled of the two. Written reviews point the same way: 100% of STF Kronos's written reviews are positive against 4% of Flow Fit's.

STF Kronos ships an update every 2 months, Flow Fit every 4 weeks. The most recent releases landed on September 20, 2026 and September 4, 2026 respectively.

## The numbers

| Metric | STF Kronos | Flow Fit |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.7 (9 ratings)](https://appshunter.io/ios/app/stf-kronos/id1476804951/reviews)** | [2.3 (119 ratings)](https://appshunter.io/ios/app/flow-fit/id1532853237/reviews) |
| Number of ratings | 9 | **119** |
| Positive reviews | **100.0% of reviews** | 4.2% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 2 months | **Every 4 weeks** |
| Monetization | Free | Free |
| Size | 228 MB | 28 MB |
| Requires iOS | 13.0 | 13.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [STUFFACTORY](https://appshunter.io/developer/1476804950) | [Shenzhen Haiweida Technology Company Limited](https://appshunter.io/developer/1532853239) |

## What reviewers say

### STF Kronos

[App page](https://appshunter.io/ios/app/stf-kronos/id1476804951)

This app syncs with your smartwatch to monitor your fitness performance across various sports. Track heart rate, steps, and sedentary periods to analyze your health metrics. It offers additional features based on your specific smartwatch model.

**Highlights:** Smartwatch synchronization, Sports performance monitoring, Heart rate tracking, Step counting, Sedentary period analysis, iOS Health App integration

**Features:** Vision Pro support

**In-app purchases:** none


### Flow Fit

[App page](https://appshunter.io/ios/app/flow-fit/id1532853237)

Track your daily steps, monitor sleep patterns, and record your runs with GPS. Receive notifications for calls and messages on your connected device. Set alarms and take remote photos.

**Highlights:** Step count tracking, Sleep monitoring, GPS running tracker, Notification push, Alarm setting, Remote camera control, Apple Health integration

**In-app purchases:** none

**What reviewers like**

- 👍 App works for basic functions
- 👍 Watch design is good
- 👍 Some users find it good for the cost

**What reviewers complain about**

- 🐛 Bluetooth connection issues
- 🐛 Notifications not working
- 🐛 App crashes frequently
- 🐛 Inaccurate time/data
- 🐛 Language/translation issues

**Reported bugs**

- Watch not bound error
- Loses time
- Cannot connect to Dial Center
- App crashes on 'Device' tab
- Headphones not connecting

**Requested features**

- Update the application
- Fix Bluetooth connection
- Improve notification delivery
- Add more watch faces
- Allow changing home screen


## Frequently asked questions

### Is STF Kronos free?

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

### Is Flow Fit free?

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

### Which has better reviews, STF Kronos or Flow Fit?

STF Kronos is rated higher. STF Kronos averages 4.7 out of 5 from 9 ratings, while Flow Fit averages 2.3 from 119 ratings.

### Do STF Kronos or Flow Fit have ads?

Neither STF Kronos nor Flow Fit shows ads.

### Which is updated more often, STF Kronos or Flow Fit?

STF Kronos ships an update every 2 months, and Flow Fit every 4 weeks. Most recently, STF Kronos was updated on September 20, 2026 and Flow Fit on September 4, 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.*