How is the data stored, and how much data can be stored?

Data gathered from the Sensedge can be stored both locally and in the cloud to make sure you don't lose a data point.

When Your device is connected to the Internet, all readings are automatically transmitted and stored in the cloud.

The Sensedge is also designed with a data buffer to ensure continuous data collection, with and without Internet connectivity. Its 8GB of built-in memory storage can collect more than 50 million data points, which is over 100 years of minute-by-minute readings.  Should the device disconnect from the Internet, all readings are stored in the data buffer, and automatically uploaded to the cloud once Internet connectivity is restored.