# Power Sensor vs YZM SLEEP

The clearest difference is update cadence: Power Sensor at every 3 weeks against YZM SLEEP's every 5 weeks. On price, ads, in-app purchases and device support there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

Power Sensor ships an update every 3 weeks, YZM SLEEP every 5 weeks. The most recent releases landed on June 8, 2026 and September 9, 2026 respectively.

## The numbers

| Metric | Power Sensor | YZM SLEEP |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[2.6 (14 ratings)](https://appshunter.io/ios/app/power-sensor/id990875399/reviews)** | — |
| Number of ratings | **14** | — |
| Positive reviews | 11.7% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 3 weeks** | Every 5 weeks |
| Monetization | Free | — |
| Size | 16 MB | 40 MB |
| Requires iOS | **7.0** | 8.2 |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [永坚 郑](https://appshunter.io/developer/1086839265) | [Shenzhen Yunzhimian Technology Co., Ltd](https://appshunter.io/developer/1457932494) |

## 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


### YZM SLEEP

[App page](https://appshunter.io/ios/app/yzm-sleep/id1457932495)

**In-app purchases:** none


## Frequently asked questions

### Is Power Sensor free?

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

### Is YZM SLEEP free?

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

### Do Power Sensor or YZM SLEEP have ads?

Neither Power Sensor nor YZM SLEEP shows ads.

### Which is updated more often, Power Sensor or YZM SLEEP?

Power Sensor ships an update every 3 weeks, and YZM SLEEP every 5 weeks. Most recently, Power Sensor was updated on June 8, 2026 and YZM SLEEP on September 9, 2026.

---

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