Fia is a period tracker that keeps your data yours. Everything you log stays on
your phone, estimates are honest ranges — never fake-exact dates — and the
optional Pro upgrade is a single one-time purchase.
TRACK WHAT MATTERS
• Periods, flow, spotting, symptoms, PMS, pain, mood, energy, and notes
• A clear menstrual calendar with recorded days and estimated ranges
• Fertile window estimates shown honestly on your calendar
• Medications with flexible reminders, including pill regimens (21+7, 24+4)
• Weight and temperature logging
HONEST ESTIMATES
Fia shows ranges — "likely 15–19 Aug" — not false precision. The more you
record, the narrower your range gets. Recorded facts and estimates always look
different, so you always know which is which.
PRIVATE BY DESIGN
• Works fully offline — no account needed
• Your records are stored on your device, in your control
• Optional encrypted backup to your own Google Drive — encrypted on your phone
before upload; add a backup password so only you can unlock it
• App Lock with your device's fingerprint or PIN
• Discreet mode and private lock-screen notifications
REMINDERS THAT RESPECT YOU
Period preparation, daily check-ins, medication, and backup reminders — with
wording you control, so nothing sensitive appears on your lock screen.
LIFETIME PRO — PAY ONCE, YOURS FOREVER
One optional one-time purchase unlocks PDF reports for appointments, cycle
pattern comparison, premium themes, custom trackers, additional profiles, and
home-screen widgets.
Fia records and estimates; it does not diagnose. Estimates are not medical
advice and must not be used as contraception.