Built after an immigration officer told me my daughter's passport had 7 months left. We were fine - barely. I couldn't find an offline app that tracked expiry dates for a whole family without charging a yearly fee or storing passport photos on a server. So I built one. Scan once. Reminders fire automatically - 6 months, 3 months, 1 month, expiry day. No cloud. No account. No subscription. iOS & Android. Free to start. $9.99 one-time Pro.