Watch your body changing daily
Chart your weight, muscle mass and body fat against your cycle to see how it's affected.
Track Multiple Signs to Understand Your Body
Track the major factors that matter to your well-being, including your weight, your body fat percentage, BMI, muscle mass, basal metabolism, visceral fat level and even water percentage.
"Data Knows Where & When to Go"
Butterfly auto-syncs with the Femometer app to become your body diary.
We believe every tiny piece of data tells a unique story about your body and your cycle.
Work hand in hand with the Femometer App
Create a daily log of your cycle.
Receive personalized insights & tips.
Compare previous cycles.
Share data with health professionals easily.
How to use Butterfly
Download the Femometer app, open it and tap on bluetooth icon on the top left of the screen. Select Femometer Butterfly and press "Pair". You only pair once and for all.
Stand on the scale with bare feet to measure. Measurement will be completed once the number on the display screen becomes constant.
The data will be auto-synced into the Femometer app and ready for your review. We protect your data privacy and promise your data will not be used for any commercial purposes.
Download the Femometer app
Measure, track & learn everything about your cycle.
Understand (and love) your menstrual health.
Measure, track & learn everything about your cycle. Understand (and love) your menstrual health.
Measurements & Dimensions
Product Name: Femometer Butterfly
Model: FM-BF-101 Dimensions: 310mm*310mm*25mm Weight: 1.8kg
Battery: 1.5V (AAA) batteries x 4
Precision: 0.05kg / 0.2kg
Maximum weight: 180kg / 396lb / 28st
Operating termperature: 41 ℉ - 95 ℉
Storage temperature: - 4 ℉ - 76 ℉
Materials & Certification
Femometer Butterfly uses environmental friendly ITO coating with higher precision than other regular types of coating. The alternating-current body fat measurement technology also ensures higher reliability than the traditional direct-current method. Under the low light-transmitting surface is a LED screen made of ABS engineering plastic.
Shipping & Return Policy
Standard shipping fulfilled by Amazon. Your order generally will arrive in 3-5 days.
Free shipping for all orders. Free return & refund.
Rest of the World
Free shipping for orders over $30. $10 shipping fee for orders of $30 or below. Free return & refund.
This product is warranted from manufacturing defects for one year from the date of retail purchase. It does not cover damages or wear resulting from accident, misuse, abuse, commercial use or unauthorized adjustment and repair of the product. Please direct all returns to the place of the original purchase and retain your original receipt, as you may be asked to provide a copy as the proof of the purchase. Please contact firstname.lastname@example.org for further information.
What people think of Butterfly