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 love Daysy! The Daysy is amazing! I love it. I used the previous generation product, called LadyComp, preventing pregnancy for about 5 years. Once we decided to try, I got pregnant the very first cycle since I knew exactly when I ovulated. The Daysy is even easier than that and I'm so grateful for a natural alternative to hormonal birth control.

I have had an absolutely horrible… I have had an absolutely horrible experience with daisy. Daysy didn't work, is not worth the money and the customer service is horrible! I tried to make contact with daysy to troubleshoot and they were not willing to help me, would not give me a refund for my defective product and insisted on emailing me rather than calling me. Needless to say, I'm extremely frustrated to have a defective product that I paid hundreds of dollars for.

Definitely not worth your money This has to be my biggest Amazon purchase regret and I wish I could return it after 4 months of trying. It is so hard to use, hard to remember how to use, the app sucks, and this technology is not nearly as smart as it leads you to believe. You can’t track your period start days unless you remembered to take your temperature that morning and you can’t go back and update information from over 3 previous days so if you forgot to take it your temperature you’re screwed. You have to manually sync the Daysy to the app and the app to the Daysy- this is fairly straightforward but not something you’d expect from a €300 device. The app feels outdated and pales in comparison to competing apps like Flo. I sincerely do not know how this has 5 star reviews on every platform. If it were €20, it’s totally worth the money. Maybeeee €100. But €300 is ridiculous for how cheap it feels, how outdated it is, and how complicated it is. I seriously doubt this was even made by women for women.

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.