Daysy is an intelligent fertility tracker that lets you get to know your very own menstrual cycle. Thanks to Daysy, you know exactly when you are in your fertile window and when you are not.
Usa Daysy (usa.daysy.me) has a 4.0 out of 5 rating on OK.one, based on 100 user reviews collected here. It is listed under Health & Medical and its reputation is good. 73% of reviews are 4 stars or higher and 18% are 1 star; The business has replied to 87% of negative reviews. Last updated 2026-09-05.
I’m super thankful for this company. I had an issue with the battery and it turns out the port had a crack! although I don’t remember dropping it or how this happened they have replaced it with a Daysy 2.0 and I am beyond grateful. They have extremely prompt responses to emails and I cannot wait to get on track with Daysy !!
Thank you so much for your feedback, MJ!
We love using our Daysy! It is accurate, safe, and easy to use. It gives us great confidence to manage our sexuality and family in a natural and healthy way. Their customer service is some of the best we've ever experienced. When our device has cracked, they replaced it for free.
Thank you Caleb and Hannah! We appreciate your feedback!
I reached out to Daysy customer service when I had questions about my cycle and they were unbelievably fast, helpful, and kind. I was absolutely blown away by the customer service experience and I am also thrilled with the Daysy itself. Truly an incredible company and product that I would recommend to anyone!
Thank you so much, JB! We appreciate your kind words.
I sent in my daysy because it started to crack near the port. I quickly received an email from daysy instructing me how to send in my daysy to be evaluated. Overall the process only took a week! My daysy was covered by the warranty. They send me a new daysy 2.0 with my temps/ Menstruation already programmed into it. Everyone was so helpful!
Glad our team was able to assist you! Thank you for your feedback!
The whole experience was wonderful from beginning to end. The Daysy team is incredibly responsive and definitely cares about its customers’ satisfaction. They are very thorough and detailed with any instructions they provide, and it has been an absolute pleasure to work with them. One of the easiest and best customer experiences I’ve had in a very long time. Thank you!
We appreciate your feedback. Thank you!
This company has wonderful customer service! Quick responses and efficient problem solving! You can tel how much they care about customers and delivering a great product!
Thank you so much for your kind words, Keeona. We love our Daysy family!
I had an unexpected issue come up with my Daysy tracker, so I contacted customer service & I was thrilled with the communication I received & overall customer service displayed by the Daysy team members. Extremely satisfied with my most recent experience & ultimately, I was able to have my Daysy repaired with no cost to me, which was appreciated immensely! Highly recommend Daysy & will continue to support this amazing (& kind) brand!
We appreciate your feedback, Madi. Thank you!
my daysy wasnt working and someone on the team (richard) made me feel really valued and important, heard my worries, responded to them, and helped get me set up with a new daysy. im so relieved and thankful to have gotten such beautiful service. it really redeemed my faith in the daysy. THANK YOU!
Thank you so much for your feedback. I'm so glad our team was able to help you.
I recently had a problem with my Daysy battery failing to connect and got an error message on the app telling me to contact Daysy customer service to resolve the issue. Long story short, they got back to me with instructions on shipping my Daysy to them, then determined it was still under warranty and sent me a new Daysy after transferring all of my data to it. Amazing. They truly went the extra mile to help me out. I wish all customer service was this fantastic!
Thank you so much, Gabrielle!
I had an issue with my device and I received amazing customer service. They were quick and ready to help me. Thank you!
Thank you so much, Djam!
I'm extremely happy with the excellent customer service from both, Catalina & Richard. They were prompt, courteous, easy to understand and kind. I appreciated their helping me fix my Daysy. I couldn't be happier!Thank you and keep up the great work.
Thank you so much Mejana!
I have been using my Daysy tracker for over a year. I was having some technical difficulties, and the customer service team was incredibly helpful and responsive. 5 stars for the device, and 5 stars for the team behind Daysy.
Thank you so much, Margaux! We appreciate your feedback.
I began using Daysy a little over 2 years ago. It has brought a lot of insight on how my hormones and temp regulate with eachother. I love how I don’t have to suppress my ovulation (birth control) and i can naturally monitor my cycle to prevent pregnancy. Whenever I’ve had issues or questions regarding my Daysy, the turn around time has been so quick!
We appreciate you taking the time to leave us feedback, Spenser!
Customer service is ALWAYS top-notch and after 3 years, I’m still in love with my Daysy. One of the best investments I’ve ever made for my health and well-being!
Thank you so much, Marissa!
This is not an accurate way to check your fertility. I have been doing at the same time my basal temperature with the daysy thermometer and another £3 thermometer I bought in a pharmacy and both give me the same temperature every morning. Plus, daysy views just gives me an approximation of my ovulation time or fertility window as if I was an average person. I do have regular cycles of more than 28 days and less than 31. My fertile period is much earlier than what the app shows (which is an average approximation which any other free application could give you). It didn't even change when I added my cervical fluids which are out of the fertile window the app Daysy Views provides. Honestly not worthy. Just get clear blue ovulation tests and detect your fertility peak. And complete information in any other free app regarding your temperature every morning taken with a normal £3 thermometer, check your cervical fluids and that's all. £299 for a thermometer and an application which does not take into consideration your personal data is not worthy
Hi Margarita, Thank you for your feedback. Daysy is not just a thermometer as it has an embedded computer with a complex algorithm to perform data analysis in real time. Additionally, DaysyView does not perform any calculations - it is just an app to view the data housed within your Daysy. The app will provide a projection of ovulation and fertility, but these are purely predictions. It is Daysy that's taking your reading and analyzing it to give you your indicator each day. If you'd like to learn more about how Daysy works, please email us at [email protected], and we'll be happy to assist you.
I have used Daysy for the past two years in addition to fertility awareness method. Daysy has given me the piece of mind that allowed me to make the transition from hormonal birth control to a natural way of tracking my fertility. Additionally, the customer service department is excellent! I have reach out to customer service on a few occasions, they have been quick to respond and always have a solution. Highly recommend this product!
Thank you so much, Amanda!
We love our daysy. It feels so good to be off hormones!!
So glad to hear this! Thank you for your feedback.
Wonderful customer service! Prompt and polite responses to questions. Very efficient and effective team!
Thank you, Diana!
Catalina and Richard went above and beyond in helping me after I unfortunately dropped and cracked Daysy! Catalina accommodated with looking up my original purchase and getting me over the instructions on mailing back Daysy to see if she was under warranty. Luckily for me she was ; ) Richard assisted in getting my new Daysy synced with my old data and getting it mailed back to me. The whole experience was very professional and I am so thankful for the assistance they both provided me!
Thank you for your kind words, Amanda!
I’m loving the daysy so far. The only con I have is that it seems my cap/cover that goes over the thermometer is very loose. Sometimes I’ll pick it up and the cap just falls off. Is this a common issue for anyone else?
Hi Shana, Thank you for your feedback! Please email us at [email protected], and we'll be happy to help you in getting a new cap.
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