Privacy checklist
Questions to ask before using a cycle tracking app
You should not need a law degree to choose a period tracker. These questions help you spot whether an app is simple, private, and honest enough for your comfort level.
Does it need an account?
If the app needs an account, your entries may be connected to an email, phone number, device, or profile. That may be fine for some people, but it should be a clear choice.
Does it make money from ads?
Ads often come with tracking tools. A privacy-first period tracking app should be clear about whether it uses ad SDKs, analytics, or advertising IDs.
Can you use it without internet access?
A local phone-only tracker can work without sending your cycle notes to a server. That is one reason open-cycle keeps the core app small.
Can you delete your notes?
Look for plain controls to delete one entry or clear everything. If a product stores your data in an account, also look for account deletion and data deletion instructions.
What outside sources say
HHS keeps a public page about reproductive health privacy under HIPAA. Researchers are also still studying how fertility and period apps handle data. The details can be technical, but the lesson is simple: ask where your notes go.