CoreMotion Data Recorder vs YMYW
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
CoreMotion Data Recorder
This utility app helps developers collect and visualize motion data from Apple Watch and iPhone. Recorded data syncs to the iPhone for analysis via line charts. It supports file sharing for easy data export and analysis.
- Collect CoreMotion data from Apple Watch/iPhone
- Synchronize data to iPhone
- Visualize data with line charts
- Support AirDrop and file sharing
- Access accelerometer, gyroscope, pedometer, magnetometer, altimeter, barometer data
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This app could help developers to obtain the Core Motion data from the paired Apple Watch or from iPhone. Recorded data will be automatically synchronized to the iPhone. Users can view the recorded motion data directly on the iPhone in the form of line chart. Furthermore it also supports AirDrop and other forms of file sharing facility, making it easy for developers to obtain and analyze the Core Motion data. Core Motion reports motion and environment related data from the onboard hardware of watchOS device, including from the accelerometers and gyroscopes, and from the pedometer, magnetometer, altimeter and barometer.
YMYW
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YMYW is a smart LED light controlled by Bluetooth 4.0 (BLE). Using a smartphone that supports Bluetooth 4.0, you can control the YMYW lights around you to achieve various lighting effects, music follow-up, and timed switching. YMYW has up to 20 built-in gorgeous effects, and allows users to DIY their own color modes, adding fun to life!
Screenshots
Verdict
The clearest difference is in-app purchases: YMYW at none against CoreMotion Data Recorder's 1. YMYW also leads on update cadence (every 2 weeks vs every 2 months) and iOS requirement (12.0 vs 14.0). On price, ads 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. CoreMotion Data Recorder sells 1 one-off in-app purchase. YMYW asks for nothing beyond the download.
CoreMotion Data Recorder ships an update every 2 months, YMYW every 2 weeks. The most recent releases landed on June 11, 2026 and May 15, 2026 respectively.
| Parameter | CoreMotion Data Recorder | YMYW |
|---|---|---|
| Price | Free | Free |
| Rating | 4.0 (1 ratings) — better | — |
| Positive reviews | 100.0% of reviews | — |
| Number of ratings | 1 — better | — |
| Update frequency | Every 2 months | Every 2 weeks — better |
| Ads | No | No |
| In-app purchases | Yes | No — better |
| Monetization | Free with in-app purchases | — |
| Devices | iPhone, iPod, Apple Watch — better | iPhone, iPod |
| Requires iOS | 14.0 | 12.0 — better |
| Further details — not scored | ||
| Size | 6 MB | 8 MB |
| Age rating | 4+ | 4+ |
| Developer | 一和 朱 | 祚文 陶 |
In-app purchases
CoreMotion Data Recorder
- Advanced Mode$1.99
YMYW
No in-app purchases
Questions
Is CoreMotion Data Recorder free?
Is YMYW free?
Do CoreMotion Data Recorder or YMYW have ads?
Which is updated more often, CoreMotion Data Recorder or YMYW?
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