SensorLab · Legal
Privacy Policy
Last updated 9 November 2026. This policy covers the SensorLab app for Android.
The short version
SensorLab measures on your phone. Your readings, recordings and experiments stay there unless you choose to export them, back them up or broadcast them in a Live session. Signing in is optional and only needed for cloud backup and free Pro for students. SensorLab shows no ads, has no analytics or tracking, never sells data, and lets you delete your account and backups at any time.
Who we are
SensorLab is made by Jogendra Singh, Urban Zamidar Group (UZG19), India (“we”). For questions about this policy or your data, or to raise a grievance, email ijogendrajat@gmail.com.
What stays on your phone
We never receive any of this:
- Readings from every tool: motion, rotation, magnetic field, pressure, light, proximity and battery temperature.
- Sound from the microphone. The sound tools analyse it as it arrives and never save it as audio; a recording keeps only the numbers, such as decibels or pitch.
- Images from the camera. The Colour Detector and Ruler analyse each frame live; no photo or video is saved or uploaded.
- Your location from the GPS tool. It is shown while the tool is open and stored only if you record it, in a recording on your phone.
- Bluetooth devices nearby, listed while you scan so you can pick a sensor. Readings from a sensor you connect are treated like any other reading.
- Your recordings, experiments, sound-meter calibration and settings.
When you export a recording as CSV, Android's share sheet sends the file to the app you pick; what happens next is up to that app.
What we collect, and why
Only when you use a feature that needs it:
| Data | When | Why | Kept |
|---|---|---|---|
| Your Google account’s name, email address, profile photo and a user ID | When you sign in with Google (optional) | Signing you in, cloud backup, and checking on your phone whether your email is on an education domain for free Pro | Until you delete your account |
| Recordings you back up: the name you gave each one, the tool, the time, and its readings. A backup includes your location if it is a GPS recording, or your heart rate if it came from a Bluetooth heart-rate monitor | Only when you tap Back up to cloud (Pro) | Keeping a copy in a private space that only your account can open | Until you delete your account, or ask us to delete a backup |
| Live sessions: the session’s join code, sensor type, start time and the latest reading the host broadcasts (accelerometer, gyroscope, magnetometer, barometer or light sensor only, never location, sound, camera or Bluetooth data) | When you host or join a Live session (Pro) | Showing the host’s reading on the phones that joined | While the session runs; deleted when the host ends it |
| A random anonymous ID that lets a phone use Live sessions without an account. It holds no name, email or contact details | The first time you host or join a Live session | Letting our database accept only phones running SensorLab | Until you delete your account or ask us to remove it. If you sign in later, it becomes part of your account |
| Technical details that Google Firebase handles to run sign-in, backup and Live: IP address, app and Android version, and security tokens | Whenever you use sign-in, backup or Live | Security, preventing abuse, and delivering the service | As set by Google’s Firebase retention policies |
Payments
SensorLab Pro is sold through Google Play. Google handles the payment, and we never see your card, UPI or bank details. The app asks Google Play on your phone whether you have Pro; we don't keep purchase records on any server of ours. Google's privacy policy covers the payment itself.
What SensorLab never does
- Show ads, or use your advertising ID.
- Include analytics, tracking or crash-reporting tools.
- Sell or share your personal data, or track you across other apps and websites.
- Measure in the background: tools pause the moment you leave the app.
The permissions, in plain words
- Microphone for the sound tools: Sound Meter, Tone Detector, Oscilloscope, Spectrum Analyzer and Spectrogram.
- Camera for the Colour Detector and Ruler. (The Stroboscope uses the flashlight, which needs no permission.)
- Location for the GPS tool, only while it is open.
- Nearby devices (Bluetooth) to find and connect Bluetooth sensors. SensorLab doesn't use Bluetooth to work out where you are.
SensorLab asks for each one only when you open a tool that needs it. Say no and every other tool keeps working; change your mind any time in Android settings.
Who processes it, and how it's protected
- Google Firebase (Authentication, Cloud Storage and Realtime Database) runs sign-in, backups and Live sessions for us, on Google's servers in India or other countries.
- Google Sign-In verifies your Google account.
- Google Play handles purchases.
Everything travels over encrypted connections, and Google encrypts it at rest. Our storage rules let each account read and write only its own backups, and only signed-in phones can reach Live sessions.
Deleting your data
- In SensorLab, Settings → Account → Delete account deletes your account and every cloud backup at once.
- Without the app, follow Delete your account, or email us to remove a single backup.
- Recordings and experiments on your phone are yours to delete in the app; uninstalling SensorLab removes them all.
Your rights
Under India's Digital Personal Data Protection Act, 2023 you can ask to see, correct or erase your personal data, nominate someone to act for you, and raise a grievance. Email us and we will reply within 30 days. If you're not satisfied with our answer, you can complain to the Data Protection Board of India.
Young users
Students use SensorLab to learn, and every measuring tool works without an account. If you are under 18, sign in or buy Pro only with your parent or guardian's consent. A parent or guardian can ask us to access or delete a young person's data at the email above.
The live demo on this website
The live readings on uzg19.com/sensorlab come from your device's motion sensor and stay inside your browser; nothing is sent to us.
Changes
When this changes, we'll update this page and its date.