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Daysy fertility tracker I Hormone Free & Over 99% Accurate I Medical Device I Fertility Aid I Fertility Tracker with App
- VERY ACCURATE & RELIABLE: Based on your input, as well as data from 5 million menstrual cycles and more than 35 years of research, Daysy‘s algorithm calculates the non fertile (green) days with an accuracy of over 99%.
- EASY TO USE: Take your basal body temperature under the tongue in just about 60 seconds and see your current fertility status using a simple color system.
- NATURAL FAMILY PLANNING: The intelligent fertility tracker, with which you can get to know your individual cycle, knows exactly when you are fertile and when you are not! This means you can plan your pregnancy in the best possible way.
- FREE APP: The DaysyDay app allows you to view details of your cycle and share them with your partner, doctor or our team of experts. Fertility tracking can be this easy.
- TECHNICALLY ADVANCED: With intuitive and simple operation, Bluetooth for data transfer to your phone and tablet, and rechargeable battery via USB cable.
Daysy allows all women with a desire for a health-conscious lifestyle to monitor their individual menstrual cycle and determine their fertile and non-fertile phases in natural harmony with their body.
Based on sensitive basal body tempe- rature measurement, you can easily, reliably and accurately distinguish fertile phases from non-fertile phases.
Then you indicate whether you have your period. Daysy immedia- tely analyzes your cycle and shows you your fertile and non-fertile days using a simple color system.
Daysy offers the highest quality and reliability through an intelligent algorithm based on scientific knowledge and years of experience. The algorithm collects and learns your data by measuring your basal body temperature and entering your menstruation, and uses statistical methods to accurately predict your upcoming cycle. Day-sy‘s algorithm distinguishes fertile from non-fertile days with an accuracy of more than 99%.
Daysy shows you your fertility status as either a red (fertile/possibly fertile) or green (not fertile) light. This way you know when you are fertile and when you are not.
The app opens up new possibilities to digitally expand your knowledge about your own cycle and body and to share it with your partner, doctor or our team of experts. The app displays numerous statistics about your cycle. You also get a forecast of your fertility status for the coming weeks, so you can plan optimally.
Irene
Reviewed in Germany on February 28, 2025
Klasse um den Zyklus zu tracken
Diana fuel
Reviewed in Spain on February 15, 2025
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86
Reviewed in the United States on May 12, 2024
Me costó mucho decidir en comprarme Daysy por su elevado coste.Había leído quejas por la tardanza del dispositivo en darte más días verdes (que son los días seguidos para mantener relaciones sin embarazo). En mi caso que soy irregular y solo llevo un ciclo, ya me ha detectado para este mes 11 días verdes.En Europa es considerado como un dispositivo médico. Tiene una fiabilidad del 99.4%, una pasada, teniendo en cuenta que no hay hormonas que dañen tu cuerpo.A día de hoy, estoy completamente segura de que hice bien en invertir ese dinero. La tranquilidad que te da, el tener tu cuerpo libre de hormonas si no quieres un embarazo, o al contrario, saber cuándo es el momento en que estás ovulando para buscar un embarazo. Incluso es capaz de detectar un embarazo por la temperatura.Claro que tarda aprender el patrón de temperaturas de tu ciclo, ya que cada mujer es distinta. Vivimos en una sociedad en la queremos todo para ayer, y hay cosas que merecen la pena tirar de paciencia, el porcentaje de fiabilidad es altísimo, hay que tener en cuenta que los años fértiles de una mujer, es un tiempo prolongado en nuestra vida, y merece la pena unos meses de testeo, a cambio de la fiabilidad que ofrece, tanto si buscas embarazo, como si no.Cada mes que pase te va a ir poniendo más días verdes.Yo solo puedo recomendarlo, lo único que me apena, es no haberlo descubierto hace años...
Brittany
Reviewed in Canada on May 10, 2024
Honestly don’t buy this. A period app tracks it just the same. My temp never fluctuated during ovulation and my other period app tells me all the same things
guerloudy
Reviewed in the United States on April 21, 2024
I honestly DONT know how anyone can have an issue with this device. Those who do either didn’t read the Manual so the learning curve must seem steep or miss temperature days which is the whole point of how this device predicts. I’ve only had this device for two months and already it is MIND BLOWING on how accurate it is. I do manual FAM charting to cross reference and to be safe but each time it matches DAYSY’s predictions.Please go on the DAYSY website BEFORE buying to determine if you are compatible with this device. It helps more to have a consistent cycle. READ THE MANUAL!!! It helps to understand the button faster, its colors, and rules on exceptions. Watch YouTube videos on DAYSY reviews and instructions to understand the device.I will say that the app was annoying on the day I set up the DAYSY(syncing issues). So If you are not a very patient person or if you try to do it on the go, I can see how you can assume that it’s not working. But since set up( which took an hour or so) it has run smoothly. I have forgotten to put in my period and gone back the day after to do so. I’ve also put my period on the wrong day accidentally and corrected it very easily. Correct things as soon as possible. It’s not a magical stick. You need to give a bit of attention and consistency to get the most out of it.
Luke
Reviewed in the United Kingdom on August 26, 2023
This has been such a game changer for me and my partner. I’ve been using this for 1 year and I will never go back to Birth Control. I was on the implant for 6 years before finally making the switch. We have had no accidents and I get lots of green days now.When you get the Daysy, it takes time for it to learn your cycle, you must be prepared to be patient. There are reviews on here moaning because they’ve only waited 3 months, it took mine about 8 months before I was consistently getting lots and lots of green days. From months 3-6 I was getting about 5 green days a month (including period). Now I’m sat at 15 green days a month.I’ve also seen people recommend Natural Cycles as a replacement for this. The Daysy is far superior. My sister in law was on Natural Cycles while I was on Daysy, she just recently welcomed a baby into the family two months ago.Patience is key with this device to reap the rewards. This isn’t a ‘quick fix’. You are potentially undoing, years of birth control / hormone damage. Your body needs time to sort itself out and you will get a lot of yellow / red days during this time period. Yes it’s frustrating but my god it’s so worth it.
Carlos Angulo
Reviewed in the United States on January 6, 2023
We used the Baby comp for almost 12 years, which was great, but limited. Daysy makes data available to you by using the ios or android app, and there is also an option for making data available for husbands. This device can help you plan your family in a sustainable and healthy way.
Shawnee
Reviewed in the United States on January 14, 2023
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.
Helloimkale
Reviewed in the United States on December 28, 2022
There are tutorials on the app on how to use this. It makes it fool proof. I definitely suggest reading about fertility awareness before using this item for such.
Stori Evans
Reviewed in the United States on August 18, 2021
This a great alternative if you trying to avoid hormonal birth control. I have been using it over a month and learning about how it works before I get married this fall. I am still learning about this device ,but after awhile you get the hang of it. It also has helped me to learn more about my body and the way it works more so than I knew before. The videos for Daysy on the website is very helpful and highly suggest it. Also the people on the website are awesome at answering questions/helping.
annon
Reviewed in the United States on March 7, 2021
I loved the idea of the daysy when the first model came out. At the time it was not in my price range . Fast forward 2021 hormonal bc just isn’t for me so I decided to try it out . It’s nice how this is super easy to do and syncs flawlessly to my iPhone . I’ve had zero issues with the syncing . Color coding very easy to understand
Lizeth b.
Reviewed in the United States on March 28, 2021
Lo uso, para poder quedar embaraza, llevo 4 meses usándolo, es fácil de usar y de entender, necesitas descargar una aplicación para que sea más fácil, dirá bastante la batería, te muestra tus días fértiles y te ayuda a detectar cuando será tu periodo mestrual, en general te sirve para protegerte de un embarazo si así lo quieres
TaN
Reviewed in Italy on February 19, 2021
Trovo Daysy fantastica! É semplice da usare e insieme al Applicazione si ha la propria temperatura sotto controllo. Consigliatissima!!!
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