# Power Sensor vs FlagFit

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.

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.

## The numbers

| Metric | Power Sensor | FlagFit |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [2.6 (14 ratings)](https://appshunter.io/ios/app/power-sensor/id990875399/reviews) | **[2.7 (89 ratings)](https://appshunter.io/ios/app/flagfit/id1106428739/reviews)** |
| Number of ratings | 14 | **89** |
| Positive reviews | 11.7% of reviews | **20.5% of reviews** |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 3 weeks** | Every 2 months |
| Monetization | Free | Free |
| Size | 16 MB | 33 MB |
| Requires iOS | **7.0** | 8.0 |
| Devices | iPhone, iPod | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [永坚 郑](https://appshunter.io/developer/1086839265) | [Shenzhen Ultra Easy Technology Co., Ltd.](https://appshunter.io/developer/958871192) |

## What reviewers say

### Power Sensor

[App page](https://appshunter.io/ios/app/power-sensor/id990875399)

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.

**Highlights:** Syncs smart band data to iPhone, Real-time sport stats dashboard, Sleep time tracking, Sleep quality improvement, Share and compete with friends

**Features:** macOS Compatibility

**In-app purchases:** none


### FlagFit

[App page](https://appshunter.io/ios/app/flagfit/id1106428739)

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.

**Highlights:** Sports statistics, Sleep statistics, Sport goal setting, Calories calculation, HealthKit integration, Bluetooth connectivity

**In-app purchases:** none

**What reviewers like**

- 👍 Simple to use
- 👍 Helps count steps
- 👍 Understand health better
- 👍 Fixed crashing issue
- 👍 Fantastic support

**What reviewers complain about**

- 🐛 Won't find device
- 🐛 App crashes immediately
- 🐛 Not working since upgrade
- 🐛 Crashes without pairing
- 🐛 App won't stay open

**Reported bugs**

- Device pairing issues
- App crashing on startup
- Syncing problems
- Bluetooth connectivity issues
- App not compatible with iOS 13

**Requested features**

- Weight tracker
- More settings for sleep time
- Sync all data at once
- Contact support within app


## Frequently asked questions

### Is Power Sensor free?

Power Sensor is free to download, with no in-app purchases.

### Is FlagFit free?

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

### Which has better reviews, Power Sensor or FlagFit?

FlagFit is rated higher. Power Sensor averages 2.6 out of 5 from 14 ratings, while FlagFit averages 2.7 from 89 ratings.

### Do Power Sensor or FlagFit have ads?

Neither Power Sensor nor FlagFit shows ads.

### Which is updated more often, Power Sensor or FlagFit?

Power Sensor ships an update every 3 weeks, and FlagFit every 2 months. Most recently, Power Sensor was updated on June 8, 2026 and FlagFit on August 13, 2026.

---

*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*