Tracking data

Great. You are talking about Poolmath.
Did you sign up for the Premium subscription? You need that to save historical test data.
For temperature, you must go into Settings, the Gear Icon in the upper right, and select Track Temperature.
 
First and foremost……WELCOME TO TFP!!

When entering the test results click the check mark in the upper right after all numbers are entered. This will save the results and update the overview page.

Let me know if this helps!
Lee