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 2.2.3

- New Feature – Choose Sunday or Monday to start your calendar week
- Improved translations and text alignment
- Synchronization improvements
- Other minor bug fixes

Ratings and Reviews

Yearofthedragon88 ,

Please release update!

This app is driving me crazy. I LOVE my daysy and customer support is top notch, however this is a review of the app itself and it is terrible. After several calls and emails to support the best solution to my problem was to "forget device," in hopes it would fix my chart stats. The dots sometimes don't connect or it shows a blank spot next to a measurement on the same day and greyed out. I was told this error may occur do to syncing my daysy later in the day than normal. I sync almost immediately after measurement, if not an hour later. The time of day that I choose to sync shouldn't matter. Why can't my data be transferred and shown accurately? I have to "forget device" a couple times a week and sometimes even that won't fix my chart. On top of that, when you do "forget your device" it erases all of your data input in calendar view. I have lost so much info!! I don't even bother using this app to record add'l info anymore and use a different app that I know will keep my data safe. I was told by customer service that they are currently in the process of developing an update for the app to solve this issue. I am waiting (impatiently) for this update to surface and will update my review once that happens. I love daysy and recommend 100%, but this app is really taking a lot of the joy out of her use! I am using a fully updated, perfectly sound iPhone 5s. Please update this app!!

Whenimshan ,

New design terrible

I have had daysy for over a year. They just “upgraded” the app and this is the first time I’ve seen an upgrade be a downgrade. They made it visually prettier but functionally worse than before. They took away many of the customizable settings from before, so now I can only customize 4 things in my view. They spread out all the temperature dots on the chart feature and spread the temperature range so it looks less like you’re having temperature swings. However anyone who knows anything about fertility knows that it is helpful to see the temperature swings so you can tell the difference between follicular and luteal phases- the previous version you could see that now you can’t everything’s too spread out. PLEASE go back to the old functionality and view. This way may be aesthetically more pleasing but does for seeing when I’m fertile and when I’ve already ovulated- I now purely use this app to get my temperature- then I use that to plug into other better fertility apps- use “fertility friend” and “kindara” instead of this!!! Spare yourself the $300 to buy daysy and go get a cheaper basal body thermometer- then you can use a better app bc this one just tells you nothing

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!


Valley Electronics AG
41.9 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 Mature/Suggestive Themes
Infrequent/Mild Sexual Content and Nudity
Infrequent/Mild Medical/Treatment Information
© 2019 Valley Electronics


  • Family Sharing

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

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