Last updated: June 21, 2026
TrueBubble uses your device's built-in motion sensors (accelerometer and rotation vector sensor) to measure the tilt and orientation of your device and display it as a visual spirit level. All sensor processing happens locally on your device in real time.
TrueBubble reads the following sensors to function:
Sensor readings are used only to render the level display. They are processed in memory and discarded immediately — they are never stored on disk or transmitted anywhere.
TrueBubble does not collect, store, or transmit any data. Specifically:
TrueBubble stores the following data in your device's local app storage. This data never leaves your device:
You can clear this data at any time by clearing the app's storage in your device settings, or by uninstalling the app. Note: TrueBubble explicitly opts out of Android's automatic backup system, so this data is never uploaded to Google's cloud backup.
TrueBubble uses your device's vibration motor to provide haptic feedback when the device is level. This is a device-only feature and involves no data collection or transmission.
TrueBubble does not request or use internet access or local network access of any kind. It functions entirely offline.
TrueBubble does not include any advertising SDKs, analytics libraries, or crash-reporting services. The app is distributed through:
TrueBubble is not directed at children under the age of 13 and we do not knowingly collect any personal information from children.
If we update this Privacy Policy, we will post the revised version on this page with an updated "Last updated" date.
Questions about this policy? Contact us at privacy@spotrobotics.app