A perfect way of saving all CGM glucose data? This method will take less than 30 seconds every 90 days
I am a non-computer person. Read or follow what I did at your own risk.
In an earlier post (here), I described a way to save Libre glucose data on Zukka. In the last several days, I have repeated the method several times, and each time, it worked. The method is very simple to execute, and it should take less than 30 seconds every 90 days. Below are steps how I did it. They are meant for non-computer persons like myself.
I understand that Zukka is for iPhone only. For Android phones using xDrip, perhaps similar steps exist.
Most important step: backup the iPhone before doing anything.
I) Saving 90-day CGM data
On iPhone, locate the “Files” app. Then click on the “On My iPhone” tab. Will see the “Zukka” folder.
Step 1: Under the Zukka app, create several folders, each to store different 90-day data
Under the Zukka app, create several new folders, with names like Sept-Dec 2025, Jan-Mar 2026, etc. Each covering 90 day of data because these are the max amount of days of glucose data Zukka will store. Each folder will be used to store the respective glucose data files.
This is shown in the above Figure.
Step 2: Place the 6 Zukka files in one of the created folder
In Fig 1, there are 6 files that Zukka is using to display the glucose trace along with insulin and carbs info. On the top right, there is a circle with 3 dots; use “select”, then select all 6 files. Next, go to the bottom right circle with 3 dots and select “copy”. Go to one of the created folders, for example, Sept-Dec 2025, and “paste” the file there.
And that is it!!! All Done. For the next 90 days, it should be easier and it should take less than 30 sec.
II) Re-examine any 90-day data saved
Step 1: Cut off Zukka from the CGM
Go to Zukka settings: “Master or Follower” and select “Master”. “No CGM data source connected” will show up on Zukka glucose display screen.
Step 2: Copy the 6 files of Zukker to a folder
Select the 6 Zukka files like before. On the bottom right cicle with 3 dots; use “New Folder with Item”. This will place all the 6 Zukker items in an “untitled” folder. This is a temporary parking spot for the current 6 Zukka files, while other 90-day glucose data are being examined.
Step 3: Copy the 6 Zukka files from the folder with the desired dates and paste them under the Zukka folder
And that is it!!! All Done.
III) When done re-exam, restore Zukka back to the state before re-exam
Step 1: Copy all 6 Zukka files from the “untitled” folder back to under the Zukka folder. The new files will overwrite the old files.
Step 2: Turn on “Follower” instead of “Master”
Go to Zukka settings, and change "Master" to "Follower".
And that is it!!! All Done.
Posted Dec 2, 2025, 10:43 PM UTC