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.

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.

Works extremely well Daysy helps me monitor my fertility for preventing pregnancy, and it has worked perfectly so far. The app is great and I have had no issues with the device or the app. I love being able to download the charts and analyze my biology. Once I got a higher number of red and yellow days, so I reached out to customer support. Within one business day someone responded and provided an in depth analysis and advice.

Very expensive mistake to purchase. I have been beyond disappointed with the Daysy I purchased. I waited very long to get the new version (their website said the wait would be much less than it actually was which screwed up our family planning with our doctor that we started based on the websites indicated ship date). It takes at least two tries to take my temperature every morning and each try takes over two minutes. It very rarely actually syncs with the app. I've contacted support several times and they've been rude every time. I am not the only one having issues but they still make it feel like it's my fault. Definitely not worth what they charge for it! I was going to return it but decided to give it a chance. Big mistake. I also take thyroid medication which apparently screws up the readings but isn't mentioned anywhere in the information so a doubly worthless version expensive device.

Absolutely love my Daysy Absolutely love my Daysy! I've contacted support twice now, once for a cycle question and, more recently, about a connection problem and both times the support was quick and efficient! Highly recommend getting a Daysy or Teena to help you understand your cycle better.