Device Motion Detective vs 音耳せん
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.
音耳せん
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Sound earplugs is an application that uses acoustic psychological effects (masking effects) instead of the noise canceller function to reduce ambient sounds that are of concern. Effective when you can't concentrate on your work, study, programming, etc. due to "too quiet and uncomfortable" "I can't help but worry about ambient sounds" "I'm worried about a specific noise or the next conversation" there is. However, whether or not the sound earplugs work well depends on the usage environment and individual differences. Please refrain from using if you are concerned about the playback sound of the app. The specific sound to play can be selected from "radio noise", "forest rain sound", "cafe sound", "night sea", "early morning", "library", "moonlight", and "wind chime". The playback time of the timer can be specified from "3 minutes, 5 minutes, 10 minutes, 15 minutes, 30 minutes, 1 hour", and the time until the end of playback can be confirmed with the countdown timer on the screen. I will. Use the volume buttons on the main unit to adjust the volume level. This app works with the speaker of the main body, but the effect is more clear with stereo earphones and stereo headphones. Also, pay attention to the volume level so that you do not damage your ears with loud noise.
Screenshots
Verdict
The clearest difference is ads: Device Motion Detective at none against 音耳せん's shown. 音耳せん's advantage is update cadence (every 5 weeks vs every 13 months). On price, in-app purchases, device support and iOS requirement 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, 音耳せん every 5 weeks. The most recent releases landed on October 7, 2026 and October 17, 2026 respectively.
| Parameter | Device Motion Detective | 音耳せん |
|---|---|---|
| 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 5 weeks — better |
| Ads | No — better | Yes |
| In-app purchases | No | No |
| Monetization | Free | — |
| Devices | iPhone, iPad, iPod — better | iPhone, iPod |
| Requires iOS | 12.0 — better | 13.0 |
| Further details — not scored | ||
| Size | 2 MB | 29 MB |
| Age rating | 4+ | 4+ |
| Developer | 方 沈 | koji kamogawa |
In-app purchases
Device Motion Detective
No in-app purchases
音耳せん
No in-app purchases
Questions
Is Device Motion Detective free?
Is 音耳せん free?
Do Device Motion Detective or 音耳せん have ads?
Which is updated more often, Device Motion Detective or 音耳せん?
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