Child Vaccination Tracker Android App with Due-Date Reminders and Growth Charts

Parents in India are expected to follow the National Immunisation Schedule — roughly two dozen dose events from birth to age 16 — but the record usually lives on a paper card that gets lost, and booster windows slip by quietly. Missed or late doses are most often a tracking failure, not a medical one: nobody computed the next due date, and nobody reminded the family. Existing reminder apps either hard-code foreign schedules or need constant internet and accounts. This project builds an Android app centred on the verified Government of India UIP schedule (MoHFW): the parent registers each child once, and the app derives every due date from the date of birth, raises local reminders as doses approach or go overdue, records each administered dose with batch number and centre, and keeps the child's own weight/height measurements on a simple growth chart. It is a tracking aid, explicitly not medical advice — dose decisions stay with the paediatrician, and the schedule screen names its official source with a "verify with your doctor" note.

1. The parent creates a child profile (name, date of birth, optional photo); the app stores it in the local Room database.
2. The schedule engine adds each UIP age-band offset (birth, 6/10/14 weeks, 9–12 months, 16–24 months, 5–6 years, 10 and 16 years) to the birth date to produce every due date.
3. A background scheduler checks due dates daily and posts local notifications for doses due within the configured lead time, plus overdue alerts.
4. After a clinic visit, the parent opens the dose row and logs date, batch number and centre; the dose moves from "due" to the history timeline.
5. Weight/height entries are appended from the Growth tab and re-plotted on the dual-axis chart instantly.
6. Visit notes are saved per date and listed under the Notes tab, editable and deletable locally.

Tech stack:

• Kotlin, Android SDK (Material 3 UI)
• Room (SQLite) local database
• WorkManager + NotificationManager (local reminders)
• MPAndroidChart / Canvas custom charting
• CameraX (profile photo capture)
• AndroidX Navigation + ViewModel
• Gradle build
• Git version control

• [Multiple child profiles] Register each child with name, date of birth and photo; a one-tap switcher moves between children, and every schedule, reminder and chart is computed per child from their own birth date.
• [UIP schedule engine] Due dates are auto-derived from the verified MoHFW National Immunisation Schedule — BCG/OPV-0/Hep-B at birth, OPV/pentavalent/RVV/fIPV/PCV at 6-10-14 weeks, MR and boosters at 9–12 and 16–24 months, DPT booster-2 at 5–6 years, Td at 10 and 16 years — with JE marked optional for endemic districts only.
• [Local due-date reminders] The app raises on-device notifications for doses due soon and flags overdue doses with a warning banner; all scheduling is local, so reminders work with no internet connection.
• [Dose logging with batch & centre] Each administered dose is recorded with date given, vaccine batch number and vaccination centre, creating an auditable record that survives longer than a paper card.
• [Vaccination history timeline] Every logged dose appears on a chronological timeline showing vaccine, date, batch and centre — the digital equivalent of the immunisation card, always on the phone.
• [Growth charts from your own measurements] The app plots the child's own recorded weight, height and head-circumference entries over time on a dual-axis chart — a personal growth record, with no percentile or diagnostic interpretation claimed.
• [Paediatrician visit notes] Dated, parent-written notes per clinic visit keep advice and follow-ups in one place next to the schedule they relate to.
• [Offline-first local storage] All profiles, doses, measurements and notes live in a local Room/SQLite database — no account, no server, no connectivity required for any feature.

• Complete Kotlin Android source code with Gradle build files
• Demo APK installable on a test device
• Local Room database schema and verified UIP schedule constants
• Project report PDF (background, schedule source verification, architecture, methodology)
• PPT presentation for final review
• Viva Q&A preparation document (Android components, Room, WorkManager, schedule logic)
• Setup and demo guide