Yes.  The Purezone can be set to measure either daily or every other day.

By default, the Purezone is set to measure at 9:00am local time every other day starting on the day you activate the Purezone. 

• If you activate your Purezone before 9:00am local time, i.e. 6:00am local time, the Purezone will do it's first scheduled measurement that same day at 9:00am local time. 
• Thereafter the measurements will occur every other day at 9:00am local time.

The Purezone cassette has 48 measurements.  When the Purezone is set to measure every other day, the Purezone P3 cassette will provide 2 months (30 measurements) of every other day measurements including 18 additional measurements that can be used as ad-hoc on demand Measurements using "Measure Now" from the App.

Note:  If you set the measurement time to measure daily, the lifespan of the cassette will only be 48 days with no additional ad-hoc measurements.

Here's how to change your Purezone measurement time:

iPhone

1. Launch the Purezone app
2. Tap the gear icon Settings in the upper right-hand corner
3. Select Measurement Time
4. Under Set Measure Time - Measure Frequency select either "Every Other Day" or "Every Day"
5. Under "Measure Time" tap the time indicator, i.e. 03:00 AM
6. Tap the clock
7. Use your finger to revolve the clock dial
8. Select the measurement time by choosing the desired hour and minute setting
9. When the desired time appears, select AM or PM
10. Tap OK when the time appears correctly
11. 
12. Scroll down and tap Save
13. "Measure Time Updated - Measure time has been updated successfully.  It will take up to one hour for the results to be reflected on your Purezone device.  
14. Tap OK