STF Kronos vs Flow Fit
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
STF Kronos
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.
- Smartwatch synchronization
- Sports performance monitoring
- Heart rate tracking
- Step counting
- Sedentary period analysis
- iOS Health App integration
Read full descriptionHide full description
Descarga, sincroniza y utiliza la aplicación STF Kronos para sacar el máximo provecho a las funciones de tu smartwatch. Ideal para monitorear tu desempeño en diferentes deportes como excursionismo, ciclismo, correr y caminata en interiores y exteriores. Mide y analiza las métricas de tu frecuencia cardiaca, pasos y periodos de sedentarismo. Consulta otras funciones de acuerdo a tu modelo de smartwatch. Integrates with iOS Health App.
Flow Fit
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.
- Step count tracking
- Sleep monitoring
- GPS running tracker
- Notification push
- Alarm setting
- Remote camera control
- Apple Health integration
Read full descriptionHide full description
Pedometer You can upload your step count to the APP and save it through the bracelet, and you can set your exercise goal to check your daily compliance status. Sleep Keep track of your daily sleep status. GPS running Record the calories burned, mileage, and movement trajectory of each run. News push Push incoming calls, text messages, and other third-party notifications to the bracelet, so you don’t miss important calls, text messages and notifications Alarm setting Set alarm reminder Remote camera You can take pictures remotely, fancy selfies. Apple Health App sharing Integrates with Apple Health App
Screenshots
Verdict
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.
Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS
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.
| Parameter | STF Kronos | Flow Fit |
|---|---|---|
| Price | Free | Free |
| Rating | 4.7 (9 ratings) — better | 2.3 (119 ratings) |
| Positive reviews | 100.0% of reviews — better | 4.2% of reviews |
| Number of ratings | 9 | 119 — better |
| Update frequency | Every 2 months | Every 4 weeks — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free | Free |
| Devices | iPhone, iPad, iPod — better | iPhone, iPod |
| Requires iOS | 13.0 | 13.0 |
| Further details — not scored | ||
| Size | 228 MB | 28 MB |
| Age rating | 4+ | 4+ |
| Developer | STUFFACTORY | Shenzhen Haiweida Technology Company Limited |
Customer experience
STF Kronos
Flow Fit
Bugs and requests
STF Kronos
Not enough reviews yet to summarise bugs or requests.
Flow Fit
Reported bugs
39 issues- Watch not bound error
- Loses time
- Cannot connect to Dial Center
- App crashes on 'Device' tab
- Headphones not connecting
Show 34 moreShow fewer
- Cannot message or receive messages on watch
- Cannot get contacts on watch
- Inaccurate heart rate readings
- Time on phone and watch don't match
- New updates cause blank watch faces
- Watch loses time
- Weather not synced to area
- Blood pressure, oxygen, heart rate monitoring features disappeared
- Continually disconnects from watch
- Update does not work at all
- Notifications come late
- Watch wallpaper reverts to default
- Customization options for watch face are limited
- Time changes to military time after changing picture
- Notifications in other languages
- Calendar and time issues (e.g., March with 29 days)
- Pedometer not syncing
- Cannot change units
- Pedometer not syncing
- Weather app inaccurate
- Temperature is off
- Imperial measurements needed
- Messages notifications cannot be deleted
- Bluetooth problem requiring app reinstallation
- Lost data after reinstallation
- SMS notices not pushing to watch
- Reset required to connect to Bluetooth
- Battery life not as advertised
- Customer service unresponsive
- App crashes after update
- New update makes profile data/settings unsaved
- Watch has to be re-bonded every time
- Watch freezes on update screen
- Error message preventing device binding
Requested features
11 requests- Update the application
- Fix Bluetooth connection
- Improve notification delivery
- Add more watch faces
- Allow changing home screen
Show 6 moreShow fewer
- Sync with Apple Health
- Add support for US units (pounds, feet, inches, month-date-year)
- Allow deletion of received messages
- Add microphone for calls
- Improve weather accuracy
- Add more language options/better translations
In-app purchases
STF Kronos
No in-app purchases
Flow Fit
No in-app purchases
