Power Sensor vs FlagFit
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Power Sensor
Sync your smart band data to your iPhone for real-time access to your daily sports statistics. Track your sleep patterns to improve rest quality and share your progress with friends.
- Syncs smart band data to iPhone
- Real-time sport stats dashboard
- Sleep time tracking
- Sleep quality improvement
- Share and compete with friends
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"Power Sensor" APP is an application which can syncs Smart band data to iPhone and network. This gives user real-time access to sport stats on the Smart band dashboard throughout the day. "Power Sensor" APP tracks user sleep time, help to improve your sleep quality. Share and Compete with friends.
FlagFit
This app helps users monitor their fitness and health by tracking sports and sleep statistics. It allows for setting sport goals and calculating calories, providing insights into physical condition and sleep state. Data can be synced and viewed on a phone via Bluetooth connection.
- Sports statistics
- Sleep statistics
- Sport goal setting
- Calories calculation
- HealthKit integration
- Bluetooth connectivity
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FlagFit is a set of sport band. It is mainly concerned about the fitness and health of the population designed to help users understand their own health. FlagFit to support what features: 1. sports statistics 2. sleep statistics 3. sport goal setting 4. calories calculate *** App support HealthKit application, you can view your data by health HealthKit *** This app may use your location even when it isn’t open, which can decrease device battery life FlagFit App can be connected via Bluetooth hardware , downloads app, you can view the data by phone in the app, to help users better understand their physical condition and state of sleep. Tips：Pulling down in the different interface can be synchronized different data .
Screenshots
Verdict
The clearest difference is update cadence: Power Sensor at every 3 weeks against FlagFit's every 2 months. FlagFit's advantage is ratings volume (89 vs 14) and review sentiment (21% vs 12%). On price, rating, ads and in-app purchases 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.
On the App Store both sit at effectively the same score — 2.6 for Power Sensor against 2.7 for FlagFit. That said, the two scores are not equally well evidenced: FlagFit has 89 ratings behind it against 14, so its average is the more settled of the two. Written reviews are what separate them: 12% of Power Sensor's written reviews are positive against 21% of FlagFit's.
Power Sensor ships an update every 3 weeks, FlagFit every 2 months. The most recent releases landed on June 8, 2026 and August 13, 2026 respectively.
| Parameter | Power Sensor | FlagFit |
|---|---|---|
| Price | Free | Free |
| Rating | 2.6 (14 ratings) | 2.7 (89 ratings) — better |
| Positive reviews | 11.7% of reviews | 20.5% of reviews — better |
| Number of ratings | 14 | 89 — better |
| Update frequency | Every 3 weeks — better | Every 2 months |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free | Free |
| Devices | iPhone, iPod | iPhone, iPod |
| Requires iOS | 7.0 — better | 8.0 |
| Further details — not scored | ||
| Size | 16 MB | 33 MB |
| Age rating | 4+ | 4+ |
| Developer | 永坚 郑 | Shenzhen Ultra Easy Technology Co., Ltd. |
Customer experience
Power Sensor
FlagFit
Bugs and requests
Power Sensor
Not enough reviews yet to summarise bugs or requests.
FlagFit
Reported bugs
10 issues- Device pairing issues
- App crashing on startup
- Syncing problems
- Bluetooth connectivity issues
- App not compatible with iOS 13
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- App closes unexpectedly
- Tracker features not working
- Sleep tracking inaccuracies
- Inconsistent heart rate display
- Phone call/SMS notification issues
Requested features
4 requests- Weight tracker
- More settings for sleep time
- Sync all data at once
- Contact support within app
In-app purchases
Power Sensor
No in-app purchases
FlagFit
No in-app purchases
