Plant Care Reminder Android App with Watering Schedules and Growth Photo Log

Houseplant owners most often lose plants to watering mistakes — too much or too little — because every species runs on its own cadence. A snake plant is happy with water every two weeks while a peace lily wants it every five days, and generic to-do apps cannot model per-plant recurrence, distinguish watering from fertilizing and misting, or keep a photographic growth record. Cloud plant apps solve reminders but demand accounts, subscriptions and connectivity for what is fundamentally a personal on-device checklist. This project builds SproutCare: an offline-first Android app where each plant gets its own care schedule (watering, fertilizing, misting) with local notifications, a permanent care-history log, and a dated growth-photo timeline with height and leaf milestones. Everything persists in a local Room database — no sign-up, no server, no internet needed. Because it is built in the open with standard Android tooling (Kotlin, Room, AlarmManager, CameraX), the student can genuinely explain every part of the app in the viva.

1. The student adds each plant with its species, room location and watering, fertilizing and misting intervals — from built-in care defaults or fully custom values.
2. A ScheduleEngine converts each interval into a next-due date from the last completed event and registers exact alarms with AlarmManager.
3. At the scheduled time a notification fires on the matching channel (watering, fertilizing or misting); the user marks it done, snoozes or skips from the notification or the app.
4. Every action writes a CareEvent row into the Room database with a timestamp, building a permanent, exportable care history.
5. Growth photos captured with CameraX are stored in app-private storage and appear on the plant's dated timeline with milestone notes.
6. On device reboot, a BOOT_COMPLETED receiver re-registers all pending alarms, so no schedule is ever silently lost.

Tech stack:

• Kotlin
• Android SDK (API 26+)
• Room persistence library
• AlarmManager + NotificationCompat channels
• CameraX
• Material 3 (Material Design)
• WorkManager (deferred tasks)
• Coil image loading

• [Per-plant care schedules] Each plant gets independent watering, fertilizing and misting schedules with custom intervals, amounts and notes — e.g. Monstera every 7 days / 400 ml, Snake Plant every 14 days. Built-in defaults cover common houseplants and every value is editable.
• [Reliable offline reminders] Exact alarms via AlarmManager with per-care-type notification channels. Reminders survive reboots through a BOOT_COMPLETED receiver and fire without any internet connection.
• [Care history log] Every completed, skipped or snoozed event is stored with a timestamp, so the owner sees at a glance which plants are neglected and which are on track.
• [Growth photo timeline] CameraX capture with on-device JPEG storage and a dated timeline per plant, with milestone markers for new leaves, height measurements and repotting notes.
• [Offline-first Room database] Plants, schedules, events and photo references all persist locally in Room; an optional JSON export/import covers backup and moving to a new phone.
• [Per-task reminder toggles] Notifications switch on or off per care type — keep watering reminders on while silencing misting alerts for low-maintenance plants.
• [Material 3 home dashboard] A glanceable garden grid with colour-coded due badges (today / tomorrow / on track) and a morning digest card listing everything due that day.

• Complete Kotlin source code (MVVM architecture, Room, CameraX, AlarmManager reminders)
• Installable debug APK with 6 example plants and realistic schedules pre-loaded
• Project report PDF (architecture, database schema, scheduling logic, testing notes)
• PPT presentation for the final review
• Viva Q&A preparation document (Room, AlarmManager, notification channels, CameraX, MVVM)
• User manual: adding plants, editing schedules, logging care, exporting data