I use a Lidl product ..under the Sanitas brand. It is actually a rebranded German product and has a blue tooth link to my tablet or android smartphone , This means I can make a permanent record automatically by linking with the phone and making pdfs or csvs of the data all the way back to when I purchased it. I generally use it every day, and download maybe twice a week. Then when I go to the GP or Consultant ,they can do a little work, since they have data. Before the Blue tooth model, I would transcribe the data into Excel manually and make my graphs.Not a recommendation, just an observation:
Medisana Blood Pressure Monitor - at Lidl UK
Medisana Blood Pressure Monitor - BU 510 Upper arm blood pressure monitor for accurate measurements Very large cuff – arm circumferenceswww.lidl.co.uk
The German software works but is not as user friendly as I would like...
12 quid is a very low price so U would be concerned about quality.