Longer Living Guide

Tempdrop

Tempdrop 2.0 Advanced Fertility Monitor

Fertility tracker: sensor that records body temperature across your cycle

Early research
£199at tempdrop.com

Best for: Shift workers or light sleepers who chart temperature but cannot take a reading at the…

Price checked

Buy now at tempdrop.com
  • Worn on the arm overnight
  • Shows ovulation after it happens

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Worn on the arm overnight

Wear
Upper arm band
Battery life (per charge)
Replaceable
Measures
Skin temperature (basal body temperature trend)

Where we checked it: tempdrop.com ›

Why we picked it

It records temperature overnight on the upper arm, so you do not need to wake and measure at a set time.

Best for

Shift workers or light sleepers who chart temperature but cannot take a reading at the same time each morning

Not for

Anyone who needs advance warning of ovulation, and anyone wanting a contraceptive

The details that matter.

  • • Worn on the arm overnight
  • • Shows ovulation after it happens
  • • Not a contraceptive
  • • No subscription needed for the basic app
How strong is the research? What our grades mean ›
Strong research
Independent certification or lab data for the specific claim.
Promising research
The material is well supported, but there is no product-level testing.
Early research
Little independent research.
Mixed research
Research findings disagree.
£
Under £20
££
£20 to £79
£££
£80+

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Sources

  1. tempdrop.com
  2. nhs.uk