Daysy syncs to an app. The data is yours, but it does leave the device. Lady-Comp doesn't sync to anything. The display is built in. The forecast lives on the unit. There is no app, no Bluetooth, no cloud, ever.
App-connected. Bluetooth-synced. Cycle history viewable in your phone. Best for data-curious users who want to see patterns over time.
Shop Daysy → $249Completely standalone. No app, no Bluetooth. Display on the device shows your status. Best for users where privacy is non-negotiable.
You're already hereSame sensor, same algorithm, same Swiss engineering. The difference is what happens with the data. Daysy syncs to a free companion app for cycle history and charts. Lady-Comp doesn't sync at all. Your readings live on the device, your forecast is displayed on the device, no Bluetooth, no phone needed.
Lady-Comp carries the FDA 510(k) clearance, a higher regulatory standard than Daysy's Class I registration. The display and on-device forecast capability also add manufacturing cost. The trade-off is more privacy, more autonomy, and clearance under a stricter FDA pathway.
Yes. Lady-Comp has a built-in display that shows your status today, your cycle position, and a 6-month forecast. You don't get the granular charts Daysy's app provides, but you get the information that matters most.
No. Lady-Comp is a cycle monitor, the same as Daysy. The FDA 510(k) clearance is for fertility monitoring, not contraception. Read the full honesty page.
Spring Sale through May 31. FDA 510(k) cleared. No subscription. Free US shipping. 30-day money-back guarantee.
Add Lady-Comp to cartAncient knowledge married with modern technology.