# ucode reader vs Device Motion Detective

The clearest difference is update cadence: ucode reader at every 4 months against Device Motion Detective's every 13 months. 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.

ucode reader ships an update every 4 months, Device Motion Detective every 13 months. The most recent releases landed on December 8, 2025 and September 20, 2026 respectively.

## The numbers

| Metric | ucode reader | Device Motion Detective |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[1.0 (1 ratings)](https://appshunter.io/ios/app/device-motion-detective/id884501447/reviews)** |
| Number of ratings | — | **1** |
| Positive reviews | — | 0.0% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 4 months** | Every 13 months |
| Monetization | — | Free |
| Size | 9 MB | 2 MB |
| Requires iOS | 12.0 | 12.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 17+ | 4+ |
| Developer | [UC Technology Corporation](https://appshunter.io/developer/558488148) | [方 沈](https://appshunter.io/developer/882296318) |

## What reviewers say

### ucode reader

[App page](https://appshunter.io/ios/app/ucode-reader/id582216165)

**In-app purchases:** none


### Device Motion Detective

[App page](https://appshunter.io/ios/app/device-motion-detective/id884501447)

This utility app captures and stores detailed device motion data, including accelerometer, gyroscope, and magnetometer readings. Users can view real-time motion graphs or past records saved to the database. Data is recorded every second for up to 20 minutes per session.

**Highlights:** Raw accelerometer data recording, Raw gyroscope data recording, Raw magnetometer data recording, Processed device-motion data, Real-time motion graphs, Past motion record viewing, Data saved to database

**Features:** Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is ucode reader free?

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

### Is Device Motion Detective free?

Device Motion Detective is free to download, with no in-app purchases.

### Do ucode reader or Device Motion Detective have ads?

Neither ucode reader nor Device Motion Detective shows ads.

### Which is updated more often, ucode reader or Device Motion Detective?

ucode reader ships an update every 4 months, and Device Motion Detective every 13 months. Most recently, ucode reader was updated on December 8, 2025 and Device Motion Detective on September 20, 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.*