Probably this won't be helpful to most, but I thought I might throw it out here:
someone was asking how to see the trendlines and get the data to download.
On my Samsung phone Android App, I go to "weight" page. At the top right hand corner of the screen are the three vertical dots (breadcrumbs), they have a choice of "Weight Settings" or "Manage Data".
Choose Manage Data
Half-way down the screen you'll see "Delete by date range", but immediately above that is "REVIEW YOUR DATA".
Choose "REVIEW YOUR DATA".
On that screen, all the "week" - "all time" graphs show all data with trendlines.
HOWEVER, to download data, that doesn't appear on the phone app so I had to go to the fitbit website - specifically https://www.fitbit.com/settings/data/export. This page shows a "request data" button which leads to a dialog box and a bunch of info required including email verification etc etc.
After a while you'll get an email with a "request data" link as well and once it's been hit, that finally starts the download process.
That process took maybe a couple hours - clearly very little bandwidth devoted to it.
After that, another email with a link to the same webpage shows up and there's now an extra bit of text on the page saying "Available Archives" and under that another button saying "Download".
Be very careful with this button and be prepared to choose the folder of your choice to store the "MyFitbitData.zip" file when requested (you get one try at this each 24 hours). And then wait at least 30 mins. If you check the folder in question before the download is finished, you'll not see a "MyFitbitData.zip" file but a "crdownload" file.
OK, once the zip file is there, you must create a fresh file folder to accept the relevant data files. For reasons best known to google, they've chosen to deliver the data in ".json" type which is javascript (I think additionally having a .csv file option would have been polite). I don't use java to talk about, but I use MS Excel a lot, so that's where I wanted my data.
So, within the zip file, navigate past the pdf file which "explains" it all to you, to the folder with your name on it to folder "personal & account" and select all the files starting with the word "weight". Copy those files to your new file folder.
I found google has also kindly decided to advise me my weight in lbs rather than the kg they were advised in. oh well.
THEN I opened a fresh Excel file.
1 From the ribbon, I chose "Data"-> "Get Data"-> "From File"-> "From .JSON" and selected the first weight file in my folder.
2 that then created an interim file / dialog box called a Power Query Editor (new to me).
3 the JSON file name you just selected should be highlit on the side - if not, select it. Then with the top ribbon choose "List Tools" "Transform" -> "To Table" which brings up a dialog box "To Table". Hit "ok" without changing anything in the dialog box.
4 You'll now see a "Column1" added above the list of records on the PQ. next to "Column1" is a two-way arrow: click that (brings up new dialog box) and click "OK".
5 Finally from the top ribbon choose "Home" -> "Close and Load" ( -> "Close and Load" if needed). this takes you back to your excel file and there's a new table on a new sheet there showing those points of data.
These steps 1 - 5 need to be repeated for each file in turn (really only a few clicks each once you're in the swing of it or write a macro to do it for you).
Data will then be in separate tables on separate tabs of a single excel file. The tables I have had “Column1.weight”, “Column1.date”, “Column1.bmi” and if I’d made the effort to note it on a regular basis, “Column1.fat”. There are other columns too, but they’ve defaulted to something generic for me so I ignored them. One of them was “time” though, so maybe if people have multiple entries for a date, that should show up. For my data, it’s only showing other than 23:59:59 after 21 November 2024?
So finally, I grabbed all the data off those tabs and listed them on the same tab and created a chart looking like I wanted it. A google search will show how that’s done.
Anyhow, the above is a great way to waste a couple of full afternoons, good luck.
