Sensor Logger
Publisher Description
One-Tap Sensor Logger with Watch, Streaming, Bluetooth & Multi-User Studies
Sensor Logger collects, records and displays data from a wide range of sensors on your phone & Wear OS watches — including accelerometer, gyroscope, GPS, audio, camera and bluetooth devices. You can also log device properties such as screen brightness, battery level and network state. An intuitive interface allows you to select your desired sensors and preview them live. A 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, KML and SQLite. For advanced use cases, you may also stream data via HTTP or MQTT during a recording session, resample and aggregate measurements from multiple sensors, and create Studies to collect recordings from other Sensor Logger users with ease. Sensor Logger is specifically designed for researchers, educators, and anyone with an interest in collecting or monitoring sensor data on their smartphone. It serves as a toolbox for exploring various fields, including physics, science, technology, engineering, and mathematics (STEM).
Main Features:
- Comprehensive Sensor Support
- One-Tap Logging
- Background Recording
- Recordings on Interactive Plots
- Stream Data Real-time via HTTP / MQTT
- Intelligent, Custom Rule Engine.
- Zipped CSV, JSON, Excel, KML and SQLite exports
- Resample and Aggregate Measurements
- Enable & Disable Specific Sensors
- Scan & Log Nearby Bluetooth Devices
- Add Timestamp Synchronised Annotations During Recording
- Adjust Sampling Frequency for Sensor Groups
- Custom Recording Workflow
- Raw and Calibrated Measurements Available
- Live Plots and Readings for Sensors
- Organise, Sort and Filter Recordings
- Control and Track Recording Sessions From Watch
- Log Measurements From Your Watch
- Bulk Export & Delete Recordings
- Free Resources to Help You Analyse Your Data
- Ad-Free
- Data Stays On-Device and 100% Private
- Create and Share Dashboard-style, Data-driven Stories using your recordings, hosted online.
Supported Measurements (if available):
- Device Acceleration (Accelerometer; Raw & Calibrated), G-Force
- Gravity Vector (Accelerometer)
- Device Rotation Rate (Gyroscope)
- Device Orientation (Gyroscope; Raw & Calibrated)
- Magnetic Field (Magnetometer; Raw & Calibrated)
- Compass
- Barometric Altitude (Barometer) / Atmospheric Pressure
- GPS: Altitude, Speed, Heading, Latitude, Longitude
- Audio (Microphone)
- Loudness (Microphone) / Sound Meter
- Camera Images (Front & Back, Foreground)
- Camera Video (Front & Back, Foreground)
- Pedometer
- Motion Activity
- Light Sensor
- Annotations (Timestamp and optional accompanying text comment)
- Device battery level and state
- Device screen brightness level
- Nearby Bluetooth devices (All advertised data)
- Network
- Heart Rate (Wear OS Watches)
- Wrist Motion (Wear OS Watches)
- Watch Location (Wear OS Watches)
- Watch Barometer (Wear OS Watches)
Optional Paid Features (Plus & Pro):
- No limitations on the number of stored recordings
- Additional export formats — Excel, KML and SQLite
- Additional timestamp formats
- Checkpoint for long recordings
- Combined CSV export — combine, resample and aggregate measurements from multiple sensors
- Customise recording workflow
- Advanced sensor configurations
- Custom naming templates
- Theme and icon customisations
- Unlimited number of rules
- Unlimited number of annotation presets
- Unlimited Bluetooth beacons and no limit on the minimum RSSI
- Create larger Studies with more participants
- More allocated storage for Studies using Sensor Logger Cloud
- Unlimited number of simultaneously toggled Bluetooth sensors and no limit on the minimum signal strength
- Email support (Pro & Ultimate only)
- Advanced Study customisation, including creating custom accompanying questionnaires and custom Study ID (Ultimate only)
About Sensor Logger
The company that develops Sensor Logger is Kelvin Tsz Hei Choi. The latest version released by its developer is 1.0 .
To install Sensor Logger on your Android device, just click the green Continue To App button above to start the installation process. The app is listed on our website since 2026-03-14 and was downloaded 10 times. We have already checked if the download link is safe, however for your own protection we recommend that you scan the downloaded app with your antivirus. Your antivirus may detect the Sensor Logger as malware as malware if the download link to com.kelvin.sensorapp is broken.
How to install Sensor Logger on your Android device:
- Click on the Continue To App button on our website. This will redirect you to Google Play.
- Once the Sensor Logger is shown in the Google Play listing of your Android device, you can start its download and installation. Tap on the Install button located below the search bar and to the right of the app icon.
- A pop-up window with the permissions required by Sensor Logger will be shown. Click on Accept to continue the process.
- Sensor Logger will be downloaded onto your device, displaying a progress. Once the download completes, the installation will start and you'll get a notification after the installation is finished.
Program Details
System requirements
Download information
Pricing
Version History
version
posted on 2026-03-14
- Improve reliability
version
posted on 2026-03-02
- Bug fixes
version
posted on 2026-03-02
- You can now edit most settings and configuration of a Study post-creation.
- Multi-select as a new Questionnaire type for Studies. Participants need to upgrade to this latest version in order to view those questions, if any.
- You can now stream images via MQTT or HTTP alongside all other sensor data.
- Additional screens now support localisation, along with other translation enhancements.
- Improved BLE reliability.
version
posted on 2026-02-22
- Add additional Info instructions for Participants of a Study. Info will show up as a new tab in a Study, with full markdown support.
- Clear indication the exact moment an image is taken.
- Clear warning when there are still pending files to be transferred for Watch recordings.
- Improved clarity when Webhooks are not configured for a Study.
- Bug fixes.
version
posted on 2026-01-13
- Introducing the new Activity sensor, which logs motion activity types such as walking, running, cycling, driving and stationary.
- Rule Engine support for the Activity sensor.
- Live sensor preview now supports more fields for orientation and barometer.
- Inline Preview now supports battery temperature.
version
posted on 2025-12-11
- Adds support for webhooks in Studies, enabling investigators to be notified & optionally respond when a participant uploads a recording.
version
posted on 2025-11-09
- Compass readings can be used in the Rule Engine.
- Cameras are much more powerful now, you can:
- Pinch to zoom in and out;
- Tap to focus;
- Manually adjust exposure.
- The camera view finder now also comes in three sizes, including a new extra wide size so you can interact with the new camera features more easily.
- Studies can be extended for longer, even on the free tier — and for paid users, Studies can be extended even longer, up to 4 months at a time.
version
posted on 2025-10-14
- Fixes a crash on startup
version
posted on 2025-09-14
- Introducing Bring Your Own Bucket for Studies
- Pro tier users get more value for money, with their included Sensor Logger Cloud storage doubling from 10 GB to 20 GB.
- Ultimate users enjoy additional benefits, including the ability to run up to 50 active Studies simultaneously, an increase from 20. The Sensor Logger Cloud storage allocation also doubles, from 100 GB to 200 GB. Additionally, Ultimate users can now create XL Studies with twice as many participants, accommodating up to 2000.
version 1.45.0
posted on 2025-08-06
- Supports watch magnetometer