Sensor Logger

Sensor Logger is an easy-to-use, beautifully designed data logger that logs readings from common sensors on your iPhone and Apple Watch — including accelerometer, gyroscope, GPS, audio, camera and any nearby Bluetooth devices. An intuitive interface allows you to select your desired sensors. A simple tap of a button initiates the recording function, which works even when the app is in the background. You can view and manage recordings within the app via interactive plots. The export functionality conveniently outputs your recordings in a variety of formats, including Zipped CSV, JSON, Excel and Kml. For advanced use cases, you may also stream data via HTTP during a recording session, or create Studies to collect recordings from other Sensor Logger users systematically with ease.

Main Features

- One-Tap Logging
- Background Recording
- View Recordings on Interactive Plots
- Stream Data via HTTP
- Zipped CSV & JSON Exports
- Enable & Disable Specific Sensors
- Supports Logging Nearby Bluetooth Devices
- Add Timestamp Synchronised Annotations During Recording
- Adjust Sampling Frequency for Sensor Groups
- Raw and Calibrated Measurements Available
- Live Plots and Readings for Sensors
- Organise, Sort and Filter Recordings
- Control & Track Recording Session From Watch
- Bulk Export & Delete Recordings
- Resources to Help You Analyse Your Data
- Data Stays On-Device and 100% Private

Studies & Sensor Logger Cloud

- Create Studies to collect data from other Sensor Logger users in a streamlined way.
- When a Study is activated, the exact sensor configuration, as prescribed by the investigator, is used to ensure data collection consistency.
- Study participants can seamlessly upload their recordings to a secure cloud when contributing to a study.
- Join, pause and switch Studies anytime.
- Easily filter and organise recordings made for different Studies.
- Creating and managing Studies.
- Sensor Logger helps you create Studies with clear data usage description, privacy statement and contact details to ensure privacy compliance, and that your participants understand how their data will be used.
- Customise Study size, duration, sensor configuration, export formats and more.
- Invite others to your Study with a short code or a QR code.
- Keep track of participant count, recording number, and other statistics about your Study.

Optional Paid Features (Plus, Pro & Ultimate)

Should you want to support the development of the app, please consider subscribing to one of the paid tiers.

- No limitations on the number of stored recordings
- Additional export formats — Excel and KML
- Customise recording workflow
- Advanced sensor configurations
- Custom naming templates
- Theme and icon customisations
- Create larger Studies with more participants
- More allocated storage for Studies using Sensor Logger Cloud
- Unlimited number of toggled Bluetooth sensors
- Email support

Supported Measurements

- Device Acceleration (Accelerometer; Raw & Calibrated)
- Gravity Vector (Accelerometer)
- Device Rotation Rate (Gyroscope)
- Device Orientation (Gyroscope; Raw & Calibrated)
- Magnetic Heading (Magnetometer; Raw & Calibrated)
- Barometric Altitude (Barometer)
- GPS Coordinate, Altitude, Speed & Heading
- Audio (Microphone)
- Loudness (Microphone)
- Camera Images (Front & Back, Foreground)
- Camera Video (Front & Back, Foreground)
- Pedometer
- Heart Rate (Requires watch app to be installed)
- Wrist Motion (Requires watch app to be installed)
- Annotations (Timestamp and text)
- Device battery level and state
- Device screen brightness level
- Nearby Bluetooth devices (All advertised data)
- Headphone Motion (AirPods)
- Network

Note that heart rate logging requires integration with the Health app on the watch. Permission to access the heart rate from HealthKit on the watch is needed for the app to log the measurements.

Terms of Service: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/