# UM_Meter vs WITMOTION

The clearest difference is rating: WITMOTION at 3.0 against UM_Meter's 2.4. WITMOTION also leads on review sentiment (38% vs 23%). UM_Meter's advantage is update cadence (every 4 days vs every 2 weeks) and iOS requirement (8.0 vs 15.6). On price, ratings volume, 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.

WITMOTION holds the better App Store score, 3.0 against 2.4. Both are backed by a comparable volume of ratings — 17 and 10 respectively. Written reviews point the same way: 23% of UM_Meter's written reviews are positive against 38% of WITMOTION's.

UM_Meter ships an update every 4 days, WITMOTION every 2 weeks. The most recent releases landed on October 12, 2026 and September 26, 2026 respectively.

## The numbers

| Metric | UM_Meter | WITMOTION |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [2.4 (17 ratings)](https://appshunter.io/ios/app/um-meter/id1439150213/reviews) | **[3.0 (10 ratings)](https://appshunter.io/ios/app/witmotion/id6466998150/reviews)** |
| Number of ratings | **17** | 10 |
| Positive reviews | 23.3% of reviews | **37.5% of reviews** |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 4 days** | Every 2 weeks |
| Monetization | Free | Free |
| Size | 29 MB | 33 MB |
| Requires iOS | **8.0** | 15.6 |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 4+ | 17+ |
| Developer | [亮亮 刘](https://appshunter.io/developer/1439150212) | [WitMotion Shenzhen Co.,Ltd](https://appshunter.io/developer/1509593957) |

## What reviewers say

### UM_Meter

[App page](https://appshunter.io/ios/app/um-meter/id1439150213)

This utility app connects to a USB tester via Bluetooth to display data and system operations. It also offers data storage and sharing capabilities.

**Highlights:** Bluetooth connectivity to USB tester, Real-time data display, System operation monitoring, Data storage, Data sharing

**Features:** macOS Compatibility

**In-app purchases:** none


### WITMOTION

[App page](https://appshunter.io/ios/app/witmotion/id6466998150)

This app provides convenient sensor data display and configuration for tilt sensors. It offers real-time data, visual charts, 3D angle display, and data recording for analysis.

**Highlights:** Real-time tilt sensor data display, Sensor configuration (sample rate, sensitivity), Visual chart tools (curve, scatter plots), 3D angle display, User-friendly interface, Data recording and export

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is UM_Meter free?

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

### Is WITMOTION free?

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

### Which has better reviews, UM_Meter or WITMOTION?

WITMOTION is rated higher. UM_Meter averages 2.4 out of 5 from 17 ratings, while WITMOTION averages 3.0 from 10 ratings.

### Do UM_Meter or WITMOTION have ads?

Neither UM_Meter nor WITMOTION shows ads.

### Which is updated more often, UM_Meter or WITMOTION?

UM_Meter ships an update every 4 days, and WITMOTION every 2 weeks. Most recently, UM_Meter was updated on October 12, 2026 and WITMOTION on September 26, 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.*