We don't collect, store, or transmit your data, period.
Why physically can't. We have nowhere to store it. We don't even have a server database to store it.
For the logging feature, the following information of notification is kept around within the App: Device Type, OS Version, OS Build ID, Sensor IDs, sensor readings. For your personal use, or when requesting support for the app, you may choose to share this using an Email app. In this case the log data is put into the Email body plain and unencrypted so you can review the data about to be sent. At your discretion, or when the logging feature is disabled, all data stored is deleted.
Sensor Insector does not use the Internet. When sending Log information, the process of sending is deferred to an Email app of your choice.