Literally the biggest waste of money on… Literally the biggest waste of money on the entire planet. Doesn't sync with your phone, takes forever to take your temperature and straight up doesn't work. I have reached out to customer support multiple times and they have told me to download beta versions of their app and all different types of solutions and nothing ever works. Absolutely garbage. Don't waste your money.

Careful If you are thinking in investing in this device you need to remember one important thing: Daysy is, in the end, just a fertility tracking method. It DOESN'T protect you from unwanted pregnancy (even though the company tries to sell it as if it would, in a very subtle way, and of course without taking any accountability). I got unwanted pregnant with it 2 times, now we switched on using condoms only religiously. I know from 2 other women in my friends circle who had the same "accident". So, please be careful. I still keep the device tho, in the case i will want a baby in the future, because it gives you a better overview of the best fertile days. Oh, one more thing: Beware of the paid reviews (that are in high amount on Trustpilot as well) ;)

Can't revise menstruation data from >3 days prior Your product doesn't allow you to go back to revise menstruation data if it has been 3 days since the entry. This makes it extremely frustrating if you've already logged multiple months of data, and now have to do a factory reset in order for Daysy to accurately track your cycle. I have contacted Daysy about this issue, and have not been given any way to fix this issue without reseting the device and starting its tracking from day 1. I haven't found any cases online of other customers who have been able to resolve this issue either.

I can't imagine my life without the… I can't imagine my life without the Daysy! I'm super grateful for this device and trust its reliability. I value my cycle more since using the Daysy, and I love not being able to worry about condoms since I'm good to go on green days. My partner gets excited for my green days, and the waiting makes the experience even more special, without the worry!

Daysy sync is trash This app is horrible. Yes the tracking feature is cool when I can get my Daysy to SYNC! Which is impossible 95% of the time. Yes the blue tooth is on, yes I have reread the instructions 80 times, yes the notifications is on, yes I let the Daysy fall asleep then try to resume syncing. It takes me having to log out of the app entirely and sometimes uninstall then reinstall just to get a reading. And that sync button in the upper right hand corner is completely useless. It does nothing. No one wants to do that in the morning every day because it won’t automatically sync or even manually sync for that matter.