No. You cannot switch the Purezone back and forth from the spa to the pool. 

When you set up the Purezone, you set it up as a Spa and enter specific information about the spa.  You cannot set up a Purezone as a pool. 

Any advice displayed in the Purezone app is spa-specific and would not make sense if used in a pool.  The Purezone delivers advice based on the smaller spa size and chemical usage.

In case you experience any issue, Purezone will monitor and diagnose potential issues based on the configured spa size in gallons or liters, chemicals used etc.  Purezone support will look at all associated graphs for all measured attributes including water chemistry parameters, water temperature, etc..

If a Purezone device is moved back and forth, the advice displayed in the app would be correct for the spa but not for the pool. Purezone Support would not be able to assist any such customers with potential device issues or usage questions.

Purezone devices that are moved back and forth between pools to spas are not supported.