What a glucose monitor actually costs, and whether it will tell you anything

If your HbA1c came back borderline, or insulin resistance runs in your family, a glucose sensor can show you what your own meals do. The evidence supports that. It supports it much less if you are already metabolically healthy — so this site tells you which one you are before it tells you what to buy.

As of August 2026 we track 8 continuous glucose monitors available here, and the cheapest one you can buy without a prescription is the FreeStyle Libre 2 Plus at about £103.98 a month.

Compare continuous glucose monitorsWhy glucose matters

Cost to try

  1. Dexcom ONE+Dexcom · 10 days£35.00to try · 10 days£1,277.50per year
  2. Dexcom G7Dexcom · 10 days£51.25to try · 10 days£1,870.63per year
  3. FreeStyle Libre 2 PlusAbbott · 15 days£51.99to try · 15 days£1,265.09per year
  4. FreeStyle Libre 3 PlusAbbott · 15 days£69.99to try · 15 days£1,703.09per year
  5. ZOEZOE · 14 days£149.00to try · 14 daysNot published
  6. Dexcom G6Dexcom · 10 daysNot publishedNot published
  7. Accu-Chek SmartGuideRoche · 14 daysNot publishedNot published
  8. Medtronic SimpleraMedtronic · 7 daysNot publishedNot published

The least you can spend to wear one sensor for its full life. For subscription products it is one month, because you cannot buy less.