Every ketone monitor and meter compared
Last checked September 28, 2026
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This site gives general information, not medical advice. Talk to your doctor or diabetes team before changing how you monitor or treat any condition.
All the continuous ketone sensors, blood ketone meters, breath meters and urine strips we could find that are on sale or announced, as of 28 September 2026. Every fact comes from the maker, the regulator or a seller’s listing, linked on each device’s page.
What each one is
| Device | Type | Measures | Wear or use | Readings | App |
|---|---|---|---|---|---|
| Abbott Libre Duo 10 Day (and Libre Duo) | Continuous ketone sensor | Glucose and ketones in the fluid under the skin, from one sensor | Libre Duo 10 Day: up to 10 days (age 2+). Libre Duo: up to 15 days (adults, Europe only) | Measured every minute; glucose shown on the phone, ketones tracked in the background with an Urgent High Ketones alarm above 3.0 mmol/L | Libre app; LibreView (clinics) and LibreLinkUp (caregivers) |
| SiBio KS3 | Continuous ketone sensor | Ketones in the fluid under the skin (ketones only, no glucose) | 14 days per sensor, worn on the back of the upper arm; 1-hour warm-up | Every 5 minutes, sent to the phone over Bluetooth | SiBio CKM app (iOS and Android) |
| Keto-Mojo GK+ | Blood ketone meter | Blood ketones and blood glucose from a finger-prick (a separate strip for each) | One strip per test | Whenever you test | MyMojoHealth (free, Bluetooth sync, glucose-ketone index) |
| Abbott Precision Xtra (US) / FreeStyle Optium (UK) | Blood ketone meter | Blood beta-hydroxybutyrate (β-ketone) from a finger-prick; the same meters also test glucose | One strip per test | Whenever you test (about 10 seconds on Precision Xtra) | None needed |
| Ketoscan Mini | Breath ketone meter | Acetone in the breath, in parts per million (ppm), 0 to 99 ppm | Sensor cartridge lasts about 300 tests, then is replaced | About 5 seconds per breath test after a warm-up | Bluetooth app |
| Ketonix Bronze | Breath ketone meter | Acetone in the breath, in ppm (not blood beta-hydroxybutyrate, as the maker points out) | Reusable; no sensor to replace | Whenever you blow into it | Ketonix app (iOS and Android), desktop software |
| Ketostix (urine strips) | Urine ketone strips | Acetoacetate in urine (not beta-hydroxybutyrate) | One strip per test | Color change read after about 15 seconds | None |
| Lingo by Abbott | Glucose sensor (no ketones) | Glucose only: Lingo does not measure ketones | Up to 14 days per sensor | Glucose every minute, in the Lingo app | Lingo app (iOS and Android) |
| Biosense (discontinued) | Breath ketone meter | Acetone in the breath | Reusable | Whenever you test | Biosense app (no longer works) |
Status by country
| Device | US | UK | EU |
|---|---|---|---|
| Abbott Libre Duo 10 Day (and Libre Duo) | FDA De Novo authorization, 25 Aug 2026 (Libre Duo 10 Day, people with diabetes aged 2+). Prescription only | No UK launch announced as of 28 Sep 2026 | CE mark, 27 May 2026 (Libre Duo and Libre Duo 10 Day) |
| SiBio KS3 | Not FDA authorized. Sold by SiBio as a non-medical product | Sold on Amazon UK as not intended for medical purposes | SiBio’s shop describes it as CE certified; the maker says it is not for diagnosing, treating or monitoring disease |
| Keto-Mojo GK+ | FDA 510(k) cleared (K192957) | Sold through Keto-Mojo’s UK shop | Keto-Mojo runs regional shops; EU availability not checked |
| Abbott Precision Xtra (US) / FreeStyle Optium (UK) | In vitro diagnostic strips for the Precision Xtra meter | FreeStyle Optium β-ketone strips work with FreeStyle Optium, Optium Neo and FreeStyle Libre readers; the NHS says ketone testing kits are available free on the NHS or from pharmacies | Sold as FreeStyle Optium / Precision in many countries |
| Ketoscan Mini | Consumer breath meter; breath ketone meters have no FDA clearance for diagnosis | Sold by UK retailers such as Home Health UK | Not checked |
| Ketonix Bronze | Consumer breath meter; breath ketone meters have no FDA clearance for diagnosis | Sold direct by Ketonix AB (Sweden) | Sold direct from Sweden (VAT added in the EU) |
| Ketostix (urine strips) | Sold without a prescription (Ascensia shop, pharmacies) | Urine ketone strips are sold in UK pharmacies; the NHS lists them as one way to test | Not checked |
| Lingo by Abbott | Over the counter, for adults 18+ not on insulin; not for diagnosing diseases | CE and UKCA marked; sold by Lingo and Boots | CE marked |
| Biosense (discontinued) | Discontinued | Discontinued | Discontinued |
Price, running cost and where to buy
Running cost is the price of sensors or strips for an average month (365 ÷ 12 days), from the published price shown. Try your own numbers in the cost calculator.
| Device | Price | Running cost | Where to buy |
|---|---|---|---|
| Abbott Libre Duo 10 Day (and Libre Duo) | Not announced yet | n/a | Abbott: Libre Duo 10 Day page |
| SiBio KS3 | €85.99 per 14-day sensor on SiBio’s shop; £74.99 on Amazon UK (checked 28 Sep 2026) | £162.92 a month Amazon UK price, one sensor every 14 days | Amazon UK, SiBio shop (outside the UK) |
| Keto-Mojo GK+ | US: meter kit $49.99, 60 ketone strips $50.99. UK: starter kit £48.00, 60 ketone strips £48.00 | $25.85 a month US strip price, one ketone test a day, plus the $49.99 kit in year one | Keto-Mojo US, Keto-Mojo UK |
| Abbott Precision Xtra (US) / FreeStyle Optium (UK) | US: Precision Xtra ketone strips $49.99 per 10. UK: FreeStyle Optium β-ketone strips £27.49 per 10 (Diabetes UK Shop) | $152.05 a month US strip price, one ketone test a day (meter not included) | Abbott Store (US strips), Diabetes UK Shop (UK strips) |
| Ketoscan Mini | US: $149.99 (Feb 2026 review). UK: £189.99, replacement cartridge £39 (Home Health UK) | £3.95 a month UK prices, one breath test a day (£39 cartridge per 300 tests), plus the meter in year one | Home Health UK |
| Ketonix Bronze | Bronze Basic from $169 (excluding VAT) on Ketonix’s shop | $0.00 a month One-off price; no running cost for tests | Ketonix shop |
| Ketostix (urine strips) | $12.50 per 50 strips (Ascensia shop) | $7.60 a month One strip a day | Ascensia shop |
| Lingo by Abbott | US: $54 for a 2-week sensor. UK: £59 for a 2-week sensor (Lingo’s own sites) | £128.18 a month UK starter price, one sensor every 14 days | Boots (UK) |
| Biosense (discontinued) | No longer sold | n/a | Not sold |
Things to know when comparing
- Different tests measure different ketones. Sensors and blood meters measure beta-hydroxybutyrate; urine strips measure acetoacetate; breath meters measure acetone. Their numbers are not interchangeable (Dhatariya, 2017). More on test types.
- Medical and consumer devices are different things. Abbott’s Libre Duo 10 Day is authorized by the FDA for people with diabetes. SiBio sells its sensor as a non-medical product.
- Lingo does not measure ketones. Abbott announced plans for a ketone version of Lingo in 2022 (report), but the Lingo sold today in the US and UK measures glucose only (Lingo UK).
- Prices change. Each figure is dated; check the seller’s page before buying.