What does Synced do differently?
You choose separately what a partner, friend or other supporter can see. A phase can be shared without opening your whole history; symptom access and other details are separate choices. Supporter accounts let someone receive permitted information without tracking their own cycle. Access history helps you see when shared information was opened. You can pause or revoke sharing, and support should not depend on giving access. Core period tracking, predictions, history, export and basic sharing remain free. Synced has no ads or third-party advertising trackers.
What about Flo, Clue and Stardust?
Flo, Clue and Stardust are established menstrual-cycle tracking apps. Their current offerings, regional availability and account options should be checked directly in each app or its official information. This page does not rank their medical accuracy, describe their privacy records, claim that they lack a feature, or compare subscription prices. Products change. The useful comparison is whether an app fits your own needs and whether you understand the permissions you are granting. Synced does not claim clinical review or clinical superiority.
How should I choose a tracker?
Start with your main task: recording a period, keeping symptom history, preparing for an appointment or sharing a selected view. Check whether ordinary logging feels manageable and whether exporting, deleting and changing permissions are straightforward. Read the current privacy explanation of any service before putting health information into it. Ask what a supporter actually needs to see rather than sharing everything by default. Try a simple routine first; more fields are not automatically more useful. No tracker can diagnose a condition or make calendar predictions a reliable contraceptive method.
Are my entries private?
The calculation runs in your browser. This tool does not store your entries, submit a form to a service or create an account. Results stay in the current page until you leave it or change the inputs. Sharing is optional and creates a link using relative timing rather than the calendar date you entered. Even without identity or an entered date, a shared estimate can reveal health information to the person who receives it. Share only if that is something you want.
When should I ask for medical advice?
Seek advice for persistent changes in your usual cycle, missing periods without an expected explanation, bleeding between periods or pain that disrupts ordinary activities. Severe pelvic pain, fainting, fever with pelvic symptoms or very heavy bleeding with weakness needs urgent assessment. If pregnancy is possible, follow pregnancy-test instructions; severe one-sided pain deserves urgent care. A reassuring-looking calculator result should never delay help. This is educational information, not medical advice. You can record period dates in Synced for free if a continuing history would help you.