CoreMotion Data Recorder vs HemiPhysioData
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.
HemiPhysioData
This app collects raw and processed sensor data from your Apple Watch, including accelerometer and gyroscope readings. It allows you to select activities, preferences, and then exports the data as a CSV file to your iPhone for analysis. Ideal for tracking movement and Range of Motion (ROM) measurements.
- Collects raw and processed sensor data
- User-friendly activity selection
- Exports data as CSV files
- Supports accelerometer and gyroscope
- Configurable sampling rate
- Haptic feedback for logging alerts
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HemiPhysioData serves as an Apple Watch app designed to gather both raw and processed data from the watch's built-in sensors, such as the accelerometer and gyroscope. Its user-friendly interface allows users to effortlessly select different activities and preferences. The collected sensor data, along with additional specified values, is then neatly stored in a CSV file. These CSV files can be easily transferred to the user's iPhone for further processing and analysis. The app is specifically tailored for individuals seeking to collect movement data or Range of Motion (ROM) measurements, with the added benefit of utilizing the data for analytics and machine learning. Users have the flexibility to choose the activity type, movement type, sampling rate (samples per second), and indicate which wrist they wear the watch on, as well as whether it's their dominant or non-dominant side. Some details on screenshots: UID: Predefined twenty users (U01-U20) Activity: Movements (upper limb), Walking, Running, Misc Move Type: It corresponds to the selected activity Interval-Hertz: Samples per second (up to 100 samples per second) Dominant Side: Enable it when watch is on wrist of dominant arm Right Wrist: Enable it when watch is on right wrist Haptic-Feedback: When enabled, the user can set the ‘Starts In’ time and the logging ‘Duration'. The user gets the alert when the logging starts (when the starts-in time finishes) and ends (when the duration finishes). Use this option to log activity related data only. It saves from data cleaning later. Logged Files: Shows all saved CSV files on watch. The user can select a file to send to the iPhone or delete from watch. The following sensor data of the Apple Watch (WatchOS) is saved in the CSV file: - Device Motion Processed Data: roll, pitch, yaw, rotation rate x, rotation rate y, rotation rate z, gravity x, gravity y, gravity z, user acceleration x, user acceleration y, user acceleration z, quaternion x, quaternion y, quaternion z, quaternion z. -Accelerometer Raw Data: Acceleration x, y, and z
Screenshots
Verdict
The clearest difference is in-app purchases: HemiPhysioData at none against CoreMotion Data Recorder's 1. CoreMotion Data Recorder's advantage is update cadence (every 2 months vs every 18 months). On price, review sentiment, 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. HemiPhysioData asks for nothing beyond the download.
CoreMotion Data Recorder ships an update every 2 months, HemiPhysioData every 18 months. The most recent releases landed on June 11, 2026 and June 4, 2026 respectively.
| Parameter | CoreMotion Data Recorder | HemiPhysioData |
|---|---|---|
| Price | Free | Free |
| Rating | 4.0 (1 ratings) — better | — |
| Positive reviews | 100.0% of reviews | 100.0% of reviews |
| Number of ratings | 1 — better | — |
| Update frequency | Every 2 months — better | Every 18 months |
| Ads | No | No |
| In-app purchases | Yes | No — better |
| Monetization | Free with in-app purchases | Free — better |
| Devices | iPhone, iPod, Apple Watch | iPhone, iPod, Apple Watch |
| Requires iOS | 14.0 | 13.2 — better |
| Further details — not scored | ||
| Size | 6 MB | 2 MB |
| Age rating | 4+ | 4+ |
| Developer | 一和 朱 | Moez ur Rehman |
Customer experience
CoreMotion Data Recorder
HemiPhysioData
In-app purchases
CoreMotion Data Recorder
- Advanced Mode$1.99
HemiPhysioData
No in-app purchases
Questions
Is CoreMotion Data Recorder free?
Is HemiPhysioData free?
Do CoreMotion Data Recorder or HemiPhysioData have ads?
Which is updated more often, CoreMotion Data Recorder or HemiPhysioData?
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