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.

Choose Daysy Wow, where to begin. This device has changed my life. To have the option to not take a pill everyday and still have a safe, natural, effective way to avoid an unwanted pregnancy is remarkable. Apart from this, the staff behind Daysy offers exceptional customer service. They go above and beyond to meet your expectations. There is not enough great things for me to say about this company. Choose Daysy.

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) ;)

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.