DailyYou

A private, on-device mood journal for Android and iOS built with Flutter. All data stays on your device — no cloud, no accounts.

Features

• Multi-step mood logging — guided wizard capturing mood, sleep, energy, positivity, and self-worth in one flow
• Activity tagging — log what you've been doing; custom activities supported
• On-device AI insights — weekly and monthly reflections powered by MediaPipe on-device LLM (no data leaves the device)
• Calendar heatmap — daily mood averages visualised across a month
• Reminders — optional local notifications to prompt daily check-ins
• Biometric lock — optional fingerprint/Face ID protection
• Dark mode — follows system theme

Tech stack

Layer	Library
UI	Flutter 3.x, Material 3
State management	flutter_riverpod 3.x (non-codegen)
Database	Drift 2.x (SQLite)
Charts	fl_chart
On-device LLM	flutter_mediapipe_chat
Notifications	flutter_local_notifications
Biometrics	local_auth
Export	pdf + share_plus

Getting started

flutter pub get
dart run build_runner build --delete-conflicting-outputs
flutter run

Android requires core library desugaring — already configured in android/app/build.gradle.kts.

Project structure

lib/
  app.dart                    # Root widget, theme, routing
  main.dart                   # Entry point
  core/
    database/                 # Drift schema, DAOs, generated code
    llm/                      # LlmService abstraction + MediaPipe impl
    providers/                # Riverpod providers (mood, activity, settings, LLM, insights)
  features/
    log_mood/                 # Mood logging wizard screen + widgets
  shared/
    widgets/                  # Reusable UI components

To-do

Core screens

• Bottom nav shell (home, history, insights, settings)
• History / calendar heatmap screen
• Day detail screen — list entries for a selected day
• Insights screen — weekly/monthly AI summaries
• Settings screen — reminders, biometrics, theme, data export
• Onboarding flow — first-launch walkthrough

Mood logging

• Edit existing entry (tap from day detail)
• Free-text note step in the wizard
• Tag selection step

Activities

• Activity management screen — add, reorder, delete custom activities
• Seed database with default activities on first launch

AI / insights

• Model download + progress UI
• Query mode — ask a free-form question about your data
• Prompt builder — serialize mood history into LLM context

Analytics

• Charts screen — mood trend line, activity frequency bar chart, sleep vs mood scatter

Infrastructure

• Local notifications — schedule and cancel reminders
• Biometric lock — gate app on fingerprint/Face ID
• PDF export and share sheet
• App icon and splash screen

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Database schema

• MoodEntries — mood (1–5), sleep minutes, energy, positivity, self-worth, optional note
• Activities — built-in and custom activities with icon and colour
• EntryActivities — many-to-many join between entries and activities
• Tags — free-form tags
• LlmInsights — cached AI-generated insight text keyed by prompt SHA-256
• UserSettings — key/value store for app preferences