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 378 customer reviews on Five Star Index, with an average rating of 4.0 out of 5.
Also known as
usa.daysy.me
Website
usa.daysy.me
Category
Pharmacy & Medicine
Listed on Five Star Index
2026
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The company replied to 96% of reviews.
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Most recent review: April 2025.
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Four months into using it and I’m not convinced it’s accurate. I get green lights on ovulation days.
Response from Usa DaysyAug 5, 2019
Hi Denae, Please email us at [email protected] and we'll be happy to do a data analysis for you.
CA
Cassidy
The days itself is pretty good..
The days itself is pretty good... cool to know my fertility status, but it has a lot of troubleshooting. The app is horrible as my daysy doesn’t even sync half the time with the app... if I would’ve known that I would’ve gotten the first series.
Response from Usa DaysyJul 12, 2019
Hi Cassidy, Most synchronization issues can be resolved quickly with the right steps. Please email us at [email protected], and we'll be happy to assist you.
BR
BrookeGC
Love but it’s got some issues
I honestly do love Daysy. I give it a 3 because while the device itself is awesome, the app is still not great. A little glitchy and too often when I try to sync it is says try again later or cannot be synced at the time. I love knowing based on the light my prediction/status, but would love the ability to see the data on the calendar and use it to its fullest.
Response from Usa DaysyJul 12, 2019
Hi Brooke, Thank you for your feedback. Please do not hesitate to reach out to us at [email protected] and we will be happy to assist you with troubleshooting to resolve this issue.
TP
Tiara P.
Sad... Like a Slow Dying Relationship (3 Years)
Update: Daysy has reached out to me, and after some messaging, I sent in my 1.0 for a new 2.0. I’m still getting used to it and will update my review again after using it for sometime. Also I changed my original rating of 2 stars to 3 for receiving better customer support.
Sad... like a slow dying relationship. When I first got my Daysy I was very happy with it. I had just started being sexually active and wasn’t interested in taking meds, hormones or getting an implant. The price for it was a bit steep for me, but at the time I figured it’d be worth it and a good investment in myself and my future. Wow was I wrong... I’ve been using my Daysy on and off for 3 years since I bought it in June of 2017 and over time it has gotten worse and worse. First issue was the cap becoming loose, (this being one of the more minor issues but still sucky for how much it cost me.) Second, was having a hard time syncing the Daysy to the old app and having to constantly take the cord in and out or turn the Daysy on again and again to get it to sync. Third, was a small crack forming on the top of my Daysy where the aux cord is taken in and out of (at first I didn’t think this was an issue but now I see it was... more on this later.) Fourth, being discoloring occurring under or on the button and not being sure why (when I called customer support about this they gave me some excuse I can’t fully remember and that I didn’t really feel justified with, knowing this cost me $302). Fifth, the new app at the time was HORRIBLE; I hated that I could no longer update the status of my period and I had issues getting data to sync (called customer support about this, and again, more excuses.) I have since just used it without the app and rely on the color of the day displayed on the Daysy itself (I can’t comment on the current update of the app because I haven’t used it.) Sixth, it started taking FOREVER to take my temperatures in the morning (when I called customer support I was given an excuse for this which really didn’t do much to help me). Also the customer service representative made it a point to say that my usage had been on and off; I understand this could be viewed as her checking to see if there was an issue with my data, but it seemed more like an implication that my issues weren’t valid because of my on and off usage, over a period of a little more than two years. And I felt a bit weird explaining that I had moments we’re I wasn’t being sexual active for some time. Seventh, the crack on top off it eventually turned to two cracks on both sides, and I’ve just recently noticed that one of the cracks has completely spread across the side of my Daysy. Eighth, it is currently acting wonky, which could be due to it now needing a new battery, but it could also be due to the crack on the side that now exposes the inside of it to outside elements. At this point, I’m positive my warranty is over and I’m stuck with a $302 disappointment. It’s sad because I’m in a committed long term relationship, and now at the moment, when I really need contraception, my Daysy is literally falling apart and failing me. This wasn’t a good investment. If I could go back in time, I would tell myself not to buy it.
Response from Usa DaysyOct 28, 2019
Hi Tiara, Thank you for updating your review. Please let us know if we can be of assistance as you and your new Daysy 2.0 get to know each other!
AP
Alia P.
I had this product for 30 days and…
I had this product for 30 days and never used it, so I knew it wasn't going to work for me. I was dealing with a family emergency at the time, so when I had a moment I attempted to contact the company for instructions for a return. I emailed and telephoned multiple times over the course of 5 days before I finally got someone on the phone. They were not friendly, and said they would "allow" the return but that they would add a 10% restocking fee. I would be deducted my original shipping as well, and have to pay return shipping costs. Ok, fine. Then they sent a rather lengthy E-mail advising me that if any paperwork were missing then there would be additional fees deducted from the return. I run a business myself, and could never imagine penalizing a customer if they didn't bring me back the original packaging, especially if the item was unused. I would highly recommend avoiding this company if you're unsure if this is going to work for you, because I've never had such a hassle with a return, ever, at any company.
Response from Usa DaysyJan 17, 2019
Hi Alia, Thank you for your feedback. It will be passed along to our team for review.
KM
Kenzie M.
Only 3 stars because of quality!
I love the daysy and everything it does for you!! But there are a couple improvements that desperately need to be made. I’ve had my daysy for about 45 days and the cap is already broken and doesn’t stay on. I haven’t dropped it it’s just very poorly made for the money you spend on it. Also there are so many issues with the app. None of this is enough to make me not want to use it or quit using it I love it and I love everything it does but for the money you spend you would think you would get better quality and they would make a better app with it!
Response from Usa DaysyJan 14, 2019
Hi Kenzie, Thank you for your feedback. Please email us at [email protected], and we'll be happy to get a replacement cap out in the mail to you. We think you're going to love the new app to be released soon!
SH
Shauna
Lack luster customer service
I haven't been able to use my Daysy to its full potential because it keep giving me a battery out warning. I've email through the app 2 weeks ago and no one has responded to me. The 9-5 hours are inconvenient because I work all day did I never have time to call. I'm huge on customer service and so far Daysys has been lack luster.
Response from Usa DaysyDec 10, 2018
Hi Shauna, I'm sorry you have not been able to reach us, and I'm not sure which email address you used, but we can resolve this notification for you within seconds. Please email us at [email protected], and we'll be happy to assist you.
NO
Nora
The daysy app lost all of my…
The daysy app lost all of my intercourse data for the past month. I have tried to contact customer service 2 times in the past week about this issue and there is still no response, especially because it is now saying "possibly pregnant." This is frustrating, the app often likes to cancel out on me for no reason.
Response from Usa DaysyDec 7, 2018
Hi Nora, Most app issues can be easily remedied. I see that you are in Canada. Could you please email us directly at [email protected]? We'll be happy to assist you with this.