BumpWeek is a simple, private pregnancy timeline. Set the first day of your last menstrual period to see your current gestational age, estimated due date, and key milestones from the earliest weeks to birth.
ONE TIMELINE FOR THE WHOLE PREGNANCY
• Calculate your current gestational age and estimated due date
• Explore Baby's development, reference size, and changes for Mama week by week
• See key prenatal visit windows and filter the timeline to checkup milestones
• Apply an ultrasound dating adjustment when your clinician confirms a different gestational age
• Keep the current week, due date, and milestone visible with a Home Screen widget
PRIVACY FIRST
No registration or sign-in. Your pregnancy start date, adjustment, and display preferences stay on your device and in the app's local App Group container. BumpWeek has no ads, analytics, or third-party tracking SDKs and does not upload your pregnancy settings.
CHINESE AND ENGLISH
The interface follows your system language and supports Simplified Chinese and English.
Information is compiled from public resources including ACOG, Mayo Clinic, Cleveland Clinic, NHS, MSD/Merck Manual, and China's 2018 pregnancy-care guideline. Practices may vary by clinician, region, and individual circumstances.
Important: BumpWeek is an informational timeline only. It does not provide medical diagnosis, treatment advice, or a prescribed prenatal care schedule. Consult your maternity care professional about pregnancy dating, due dates, tests, or any health concern.
