Period or Not

Your cycle data belongs to you. Not to us, not to advertisers, not to anyone.

Period or Not is a period tracker with no account and no server of ours. Your
period history, your symptoms and your settings are written to your phone's own
storage and stay there. Nothing reaches us, because there is nowhere for it to go.

Want a backup? Export a file and keep it yourself, or switch on an encrypted copy
in your own iCloud. Both are off until you choose them, and neither one passes
through us.

How it works

• Tap a day to log your period. Hold it to add how you felt.
• Log the first day and the rest fill in for you.
• See what is coming: predicted period days, ovulation, and where you are in your
cycle right now.
• Bring the history you already have with a read-only import from Apple Health.
• Export everything to a file you keep, whenever you want.

It learns your cycle, not the average one

Most trackers assume 28 days. This one takes the median of your own last six to
twelve cycles, so a single unusual month does not drag your prediction around.
It learns how long your period actually lasts the same way, and only from the days
you tapped yourself, never from the days it filled in for you.

What you get

• A calendar you can scroll through, forwards and backwards, forever
• Symptom and mood tags, plus any tag you want to write yourself
• A Stats tab: cycle day, current phase, your averages, your most-logged symptoms
• Reminders one to seven days before your period, in the morning, afternoon or
evening, scheduled on your phone rather than sent from a server
• Optional sync to your Apple or Google calendar, with your own calendar name and
your own event titles
• Light, Dark or System appearance
• Backup and restore through a file you control

Everything is free

There is no subscription, no in-app purchase and no locked feature. Export, import,
Apple Health, statistics, reminders: all of it, for everyone.

Why we are different

We went fully local. There are no servers and no database of your cycles. Other
apps say "secure cloud storage" and mean their storage, on their machines. The
only cloud here is your own iCloud, switched off until you turn it on, and
encrypted with a key that never leaves your devices. Nothing leaves your phone
unless you choose it, and none of it comes to us.

• No analytics, no behavioural tracking, no third-party SDKs
• No data selling, because we do not have your data
• No account to create and no email to hand over

Built by a woman, for women. This is not a VC-backed data business. It is an
indie app made by someone who uses it and cares about who else can read it.

Period apps have made headlines for privacy failures. We built the version that
cannot fail that way. Your health data is yours. Period.

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