"Precision & Efficiency Matter."
Complete your measurement in as little as 30 seconds once Vinca gets familiar with you. The 1/100th degree precision ensures your bbt is always accurate.
"Silence is Golden!"
Vinca beeps to let you know she's ready to measure, or she just finished a measurement. Adjust the volume anytime in app in case you're worried about waking up the Sleeping Beauty...
"Subtle & Sweet"
Vinca's lipstick-like shape makes sure no one is easy to find out about your little secret of tracking ovulation unless you want them to.
"Dive deep into your fertility symptoms."
Together with the app, it tells more than just a result but also an unique "story" behind.
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 Vinca
Download our app, uncap the Femometer Vinca and pair via bluetooth. No need to pair again next time.
Put the metal tip of the Vinca under your tongue, keep your mouth closed and try not to move the thermometer around. When you hear three beeps, you've successfully measured your BBT. Now repeat this every morning - before you get out of bed and after at least 6~8 hours sleep.
The Femometer app learns from every piece of data you input and calculates your conception rate for each day. The app then provides personlized insights so you can prepare for your fertile window.
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 Vinca
Weight: 17g(without Battery)
Transmission distance: Up to 16 feet
Measurement: 89.6℉ - 107.6℉
Accuracy: +-0.09℉(95℉ - 100.4℉)
Receiver: Apple Devices: iphone 5 or above with version at lease IOS 8.0; Android devices: 4.3 or above and supports Bluetooth 4.0/4.1
Materials & Certification
Femometer is made by imported ABS material, Seiko Hall IC, 24-digit high accuracy data collection chip, low-energy Bluetooth chip as well as other finest materials, along with the finest craftsmanship, to help deliver the best quality a thermometer can be.
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 email@example.com for further information.
What people think of Vinca
Love this so far. Very accurate and easy to use.
Best fertility app and BBT thermometer I've ever used
I cannot rate this app and thermometer highly enough. I've been trying to get pregnant for 5 years and I've finally found out why I've not been successful, and it's all thanks to the personalized insights I got from the app. I shared my data with a healthcare professional and they were able to give me the help I needed. I love the Vinca II and can't wait to try the Ivy product once it's released. Thank you so much Femometer!
Work great with my irregular periods
I only have one complaint but it's not with the product. To get an accurate reading of your BBT you need at least 6 hours of.solid sleep, which is hard with a new baby so I cant always use it. The product its self is really easy to use. I love that you can use it even with irregular periods, you dont have to have the app open to use it like similar products and the app has tons of features !!!
I have been temping for many years both for TTC and TTA and have gone through many cheap BBT thermometers. I love that this one syncs to my phone and keeps track of everything. The app is simple to use. I have found that it sometimes isn’t connected to my phone right away but since it keeps record of temps for a decent timeframe it isn’t too much of a pain. I do wish that it had a digital screen on it to read it right away, but honestly for the price, it is perfect!
Highly recommend for people who's doing TTC
I recently got off of hormonal birth control and started down the natural family planning route as we prevent before TTC and let my cycles get back to normal. I use this every morning before I wake up, it is on my nightstand I reach over put it under my tongue then put it back, as long as your bluetooth on your phone is on it will sync without you doing anything but taking your temperature. This is the first cycle I used it and it was interesting to see the changes in my temperature versus my fertile period vs period etc. The app is great too as it predicts when you are ovulating and you can upload your ovulation strips and it tells you how high your LH is that day based on your ovulation strip. Would buy again and I recommend it to anyone who's doing natural family planning or TTC.