There are two ways to see previous data:
Open the RENPHO Health App > Device > Measurement Page
Method 1: Click on "Trends" at the bottom of your screen.

The data is displayed on a daily, weekly, monthly, and yearly basis. Selecting the period and the trend chart below will auto-populate the data.
Note: The date and time settings of your device will automatically sync with the smartphone when paired. If you click on the icon located in the upper right part of the "Trends" page, you will be able to see the calendar type data.
Method 2: Click on "History" at the bottom of your screen.

Select any day in the calendar (as shown in the picture below: 15th, July for example). You can track that day's records.
https://renpho.com/