# Device Motion Detective vs Accelerometer ∞

The clearest difference is review sentiment: Accelerometer ∞ at 50% against Device Motion Detective's 0%. Accelerometer ∞ also leads on rating (4.3 vs 1.0) and update cadence (every 2 weeks vs every 13 months). Device Motion Detective's advantage is in-app purchases (none vs 2) and ads (none vs shown). On price there is nothing between them.

Both are free to download. Accelerometer ∞ sells 2 in-app purchases, starting at $1.99 per month. Device Motion Detective asks for nothing beyond the download.

Accelerometer ∞ holds the better App Store score, 4.3 against 1.0. That said, the two scores are not equally well evidenced: Accelerometer ∞ has 65 ratings behind it against 1, so its average is the more settled of the two. Written reviews point the same way: 0% of Device Motion Detective's written reviews are positive against 50% of Accelerometer ∞'s.

Device Motion Detective ships an update every 13 months, Accelerometer ∞ every 2 weeks. The most recent releases landed on October 7, 2026 and October 11, 2026 respectively.

## The numbers

| Metric | Device Motion Detective | Accelerometer ∞ |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [1.0 (1 ratings)](https://appshunter.io/ios/app/device-motion-detective/id884501447/reviews) | **[4.3 (65 ratings)](https://appshunter.io/ios/app/accelerometer/id6621273087/reviews)** |
| Number of ratings | 1 | **65** |
| Positive reviews | 0.0% of reviews | **50.0% of reviews** |
| In-app purchases | **No** | Yes |
| Ads | **No** | Yes |
| Update frequency | Every 13 months | **Every 2 weeks** |
| Monetization | **Free** | Free with in-app purchases |
| Size | 2 MB | 16 MB |
| Requires iOS | **12.0** | 17.0 |
| Devices | **iPhone, iPad, iPod** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [方 沈](https://appshunter.io/developer/882296318) | [Fawkes Wei](https://appshunter.io/developer/432767536) |

## What reviewers say

### 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


### Accelerometer ∞

[App page](https://appshunter.io/ios/app/accelerometer/id6621273087)

Visualize device motion data in real-time with dynamic graphs. Analyze sensor information, calibrate your device, and explore various possibilities. This utility app offers a unique perspective on your device's movement.

**Highlights:** Real-time motion data visualization, Stunning graph displays, Sensor calibration, Data analysis, Explore endless possibilities

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Pro Monthly | $1.99 | per month |
| Pro Lifetime | $9.99 | one-time |


## Frequently asked questions

### Is Device Motion Detective free?

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

### Is Accelerometer ∞ free?

Accelerometer ∞ is free to download, with in-app purchases available.

### Which has better reviews, Device Motion Detective or Accelerometer ∞?

Accelerometer ∞ is rated higher. Device Motion Detective averages 1.0 out of 5 from 1 ratings, while Accelerometer ∞ averages 4.3 from 65 ratings.

### Do Device Motion Detective or Accelerometer ∞ have ads?

Accelerometer ∞ shows ads; Device Motion Detective does not.

### Which is updated more often, Device Motion Detective or Accelerometer ∞?

Device Motion Detective ships an update every 13 months, and Accelerometer ∞ every 2 weeks. Most recently, Device Motion Detective was updated on October 7, 2026 and Accelerometer ∞ on October 11, 2026.

---

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