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 tracker.

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 tracker, 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 tracker.

- 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 tracker 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 1.5.3

- Updated Privacy Policy
- Updated "Ask an Expert" mail addresses

Ratings and Reviews

2.7 out of 5
93 Ratings
93 Ratings
clay.liz13 ,

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!

Kell_jeneah ,

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!

HBaked ,

I love the Daysy, not so much the app.

I’ve been using Daysy for 4 full cycles now (technically 5 but first cycle was all yellow because of Daysy learning) and love it. I used it for pregnancy prevention the first two months and now for trying to conceive. The fertility monitor its self is great. Easy to use, not too bright or loud for early morning measurements, and was very accurate right after my first cycle.

The app is kind of low quality and I’ve had some difficulties with it. Thankfully, customer service has been great and quick. Also, I know Daysy is supposed to take a lot of the work out of natural family planning but I’d like to be able to enter more data like CM and opk results just for my own tracking. Because of this, I have to use multiple apps to track my fertility.


Valley Electronics AG
9 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
© 2018 Valley Electronics


  • Family Sharing

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

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