iPhone Screenshots


DaysyView is an App for tracking your menstrual cycle.

Implement your own temperature measurements and menstruation data, or simply connect daysy and automatically download your measurement data from your fertility monitor.

With daysy you are in control of your own fertility. Know when you are fertile and when you are not.

Daysy is the next generation fertility monitor, which tracks your daily fertility status by recording your basal body temperature and using a statistical model to track your cycle. With DaysyView, you can download this data to take with you and view prognosis about your cycle in the coming weeks. Valley Electronics has a proven track record of 30 years in building high quality fertility monitors and family planning.

- Choose if you want to plan or prevent pregnancy
- View your daily or weekly status of fertility
- See your color-coded monthly calendar
- View the past and the predicted future fertility
- See your temperature curve over time
- Make notes
- Synchronize your temperature value via Daysy fertility monitor or by entering it manually from a standard thermometer
- Share with your loved one
- Contact our expert team for advice and support

What's New

Version 1.5.1

Bug fix for synchronization issue with iPhone 8 and X

Customer Reviews

3.3 out of 5

35 Ratings

35 Ratings

I love natural family planning!


I’ve been using daysyView along with the daysy device to prevent pregnancy naturally for nearly two years. I’m really thankful that it takes the guess work out of it, clearly telling me if I’m fertile or infertile. My only complaint is that sometimes it’s a little difficult to sync the device with the app, but that might be the cord connection instead of the app itself. I also wish you could input you period into the app after more than 3 days because sometimes I forget to sync it for a while and then daysy gets thrown off of my cycle. But that’s a user error! Overall, it’s easy to use and is an incredibly accurate alternative to hormonal birth control. I wish more women would just on the daysy train and learn to understand their cycle so they can work with their body instead of against it. I don’t plan on having a baby for several years, but when my husband and I are ready, I know daysy will take the frustration out of that process as well!

Love it all!


I’ve had my daysy/daysy view around 4 months now and I’m so impressed! I’ve had some “issues” a few times, but by emailing or calling the experts I’ve found they were just user errors or update glitches with simple solutions. Every time I get ahold of customer support it’s sooo easy and fast, you don’t wait on hold for 20min and an email is responded to in usually 12 hour or less. Never had more personable, quicker or more efficient customer service! And daysy? I’m not pregnant so far so I guess it’s working cuz I’m using daysy as a way to not get pregnant but not have to use birth control cuz I’ve had some pretty terrible experiences with that. On birth control I had bad circulation in my legs, restless leg syndrome, anxiety attacks and heart palpitations(skipped beats on occasion). Thank you daysy team! Life off birth control is so much better!

Three ⭐️ for the app, not the Daysy


The daysy is working wonderfully for me so far! I have been using it about 2 months and I will update my review after a few more months. But the app is not up to par with the daysy. Which is not the worst problem they could have! When I connect my daysy the app will alter the days I've enter, saying I didn't take my temp on days I know I did, or showing that tomorrow's data is available but today's temp wasn't taken (substituting today's temp for tomorrow and thereby "erasing" today's temp). It's a little glitchy and disappointing, sometimes makes me nervous that the daysy itself might not be working, but so far it's just the app giving me troubles.


Valley Electronics AG
10.8 MB
Requires iOS 8.0 or later. Compatible with iPhone, iPad, and iPod touch.
English, French, German, Italian, Polish
Age Rating
Rated 12+ for the following:
Infrequent/Mild Medical/Treatment Information
Infrequent/Mild Mature/Suggestive Themes
Infrequent/Mild Sexual Content and Nudity
© 2014 Valley Electronics


  • Family Sharing

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

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