DaysyView is the free companion app to the Daysy fertility tracker. Together, Daysy and DaysyView provide you with a greater understanding of your menstrual cycle.

Daysy and DaysyView provide you with the knowledge and tools needed to identify your fertile window and make informed and powerful choices about your menstrual cycle, fertility, and health.

Key Features:

Statistics & forecasts
Look at your fertility status, predicted ovulation, confirmed ovulation, menstrual cycle calendar and statistics, temperature curve

Take notes
Track cervical mucus, intercourse, and your own notes about your fertility and cycle.

Contact our expert team
Easily reach out to our expert team if you need advice and support.

- It is always best to enter menstruation directly on your Daysy. Turn Daysy on and then press and hold the button until the violet light remains illuminated to confirm menstruation. The edit feature in the app is available for special circumstances when needed.

What’s New

Version 2.3.0

-Stability improvements
-Text changes
-Updated privacy policy

Ratings and Reviews

1.4 out of 5
29 Ratings

29 Ratings

diehardyankeesfan ,


I spent over $300 on a device that does not work without this horrendous app. First of all, why on earth can I not edit my period dates? This is absolutely ridiculous and should not even be an issue! Secondly, I have to close out of the app multiple times in the morning to finally get the Daysy to sync my temperature. This also should not be an issue with a $300+ device. The app is severely lacking in details, information, etc. as well. I have resorted to using other FREE apps that offer far more than this. I regret spending so much money on a thermometer that is paired with such a useless app.
RECENT UPDATE: Now the app won’t even open at all! I can’t sync my temperature. I can’t even see what my temperature is! This is absolutely ridiculous. I will never buy another Daysy and I will never recommend one to anyone else.

FedUpBeanz ,

App freezes upon opening

While the Daysy and it’s associated Daysyview app are extremely accurate on predicting significant trends in my cycles, the app is total garbage. In just the past week, it hasn’t been opening for me, it just freezes up. I have to delete the whole thing and resign up- and only sometimes that method works. This Daysy device is how I know when I can get pregnant or not and right NOW happens to be a time that my husband and I are trying to AVOID another kiddo. Talk about stressful, my GOSH Daysy manufacturers, get your act together! People are relying on you! And... giving you hundreds and hundreds of dollars per product. Ugh! 🙄

jjjdddlll22 ,

period dates

COME ON. the app is sufficient in showing recorded temperatures but the absolute biggest issue is not being able to enter or edit period dates on the app itself. i have forgotten more times than not to enter on the device itself (which i understand is user error, but i am normally only 50% awake when i take my temp). PLEASE FIX THIS ISSUE. why is there even a period button next to the sex one if i can’t press it?!? i should be able to simply click that to indicate. even if for now it is just for my own information, if the app can’t communicate back to the device.


Valley Electronics AG
44.4 MB

Requires iOS 10.0 or later. Compatible with iPhone, iPad, and iPod touch.


English, French, German, Italian, Spanish

Age Rating
Rated 12+ for the following:
Infrequent/Mild Medical/Treatment Information
Infrequent/Mild Sexual Content and Nudity
Infrequent/Mild Mature/Suggestive Themes
© 2019 Valley Electronics


  • Family Sharing

    With Family Sharing set up, up to six family members can use this app.

You May Also Like