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Armband Size Guide

Upper arm circumference

How to Measure

  1. 1Wrap a flexible tape measure around your upper arm
  2. 2Measure at the fullest part (mid-bicep)
  3. 3Note in inches or centimeters

Size chart

Size Inches cm
Standard Armband 8.5″ – 15.5″ 21.5 – 39 cm
Extra-Long Armband 12.5″ – 18.5″ 31.5 – 47 cm
Both armbands fit most body types.
Additional bra extenders can be purchased at any store if larger sizing is required.

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By Tempdrop team

Tempdrop is unique because it's a wearable that gives you freedom and options to suit your specific needs. 

The Tempdrop app has both free and premium versions. 

Free version

  • Sync your sensor to receive temp results
  • List of temperatures
  • Chart view
  • Multiple symptom tracking
  • Manual chart interpretation (set a cover line, temperature shift count, and peak day)
  • Data backup with robust data protection
  • Cycle history and status
  • Chart export and share
  • Calendar feature

Premium Version

  • Sync your sensor to receive temp results
  • List of temperatures
  • Multiple symptom tracking
  • Manual chart interpretation (set a cover line, temperature shift count, and peak day)
  • Data backup with robust data protection 
  • Cycle history and status 
  • Chart export and share
  • Calendar feature
  • Sleep data
  • Fertility insights
  • Automatic interpretation of temps and cervical mucus
  • Interactive fertility course (Academy) 

Find more about the premium features here.

Premium subscription cost

Go to the Tempdrop app>menu>Premium to see the subscription tiers and costs in your currency. 

Every Tempdrop purchase includes a 2-month FREE premium subscription trial.


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