Device Motion Detective vs Dirr
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Device Motion Detective
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.
- 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
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Detect the device motion detail information and save the information into the core data system. The user could view the past motion record from the data base system. The user could view the real time device motion list or the motion graph. The app can receive four types of motion: raw accelerometer data, raw gyroscope data, raw magnetometer data, and processed device-motion data (which includes accelerometer, rotation-rate, and attitude measurements). The current version could record the device motion data for 20 minutes when tap the record button once. After 20 minutes, the user could tap the record button again. During recording, the app will insert the motion data to the database every second. Only after recording the motion data, the feature of view record motion data will display the record information. In current edition, when the device shutdown, the database information will be cleared automatically. In short, the app may be useful to some engineering users or other users who need the detail device motion data. Best wishes.
Dirr
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Read position and orientation sensors: - GPS, - Compass (magnetic north), - Roll, pitch, yaw/heading - Have confidence in your data - Accuracy of GPS in meters - Visualise your compass/yaw/heading. A map is shown - Save data fully offline. Private and secure. - Manually share data with others or your other devices using the share button. - Dark/light mode
Screenshots
Verdict
The clearest difference is update cadence: Dirr at every 3 days against Device Motion Detective's every 13 months. On price, ads, in-app purchases and device support there is nothing between them.
Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS
Both are free to download. Neither carries in-app purchases, so what you see is what you pay.
Device Motion Detective ships an update every 13 months, Dirr every 3 days. The most recent releases landed on October 7, 2026 and September 29, 2026 respectively.
| Parameter | Device Motion Detective | Dirr |
|---|---|---|
| Price | Free | Free |
| Rating | 1.0 (1 ratings) — better | — |
| Positive reviews | 0.0% of reviews | — |
| Number of ratings | 1 — better | — |
| Update frequency | Every 13 months | Every 3 days — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free | — |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 12.0 | 12.0 |
| Further details — not scored | ||
| Size | 2 MB | 54 MB |
| Age rating | 4+ | 4+ |
| Developer | 方 沈 | Orth Ltd |
In-app purchases
Device Motion Detective
No in-app purchases
Dirr
No in-app purchases
Questions
Is Device Motion Detective free?
Is Dirr free?
Do Device Motion Detective or Dirr have ads?
Which is updated more often, Device Motion Detective or Dirr?
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