Monekin

Monekin is an open-source, offline-first personal finance manager written in Flutter from a single Dart codebase and currently shipping to Android (Google Play) and Windows (GitHub releases / Microsoft Store). It targets users who want unlimited accounts, transactions, budgets, goals, investments, and debts without ever handing their ledger to a third party — every byte lives in a local SQLite database, and the app works without an internet connection.

Why it matters

• Truly local-first. No accounts, no cloud sync, no telemetry. Storage is a single SQLite file managed through Drift (formerly Moor), with the schema split across lib/core/database/sql/. Backups export to a local file that can be restored on another device.
• Real feature surface, not a sample. Monekin ships multi-account bookkeeping, recurring-transaction automation for bills and subscriptions, budgets with category icons, savings goals, net-worth tracking, investment and debt ledgers, 50+ currencies with customizable exchange rates, CSV import/export, and an fl_chart-powered statistics screen.
• Material You theming. dynamic_color derives a palette from the Android 12+ wallpaper, with an AMOLED dark mode and accent picker as fallbacks. The layout collapses to an AppNavigationSidebar on tablet and desktop.
• Mature, not abandoned. First released on Google Play in October 2021 (originally Ionic + Angular), migrated to Flutter in 2023, the codebase has over 1,000 commits and is at release 9.2.1+920001 with active PRs and a translated UI.

How it works

The codebase follows a clean three-tier split under lib/. lib/app/ is feature-organised by domain — accounts, transactions, budgets, categories, currencies, debts, goals, home, settings, stats, tags, onboarding — each with its own pages and widgets. lib/core/ is the framework-independent layer: database/ wraps Drift, models/ defines typed records, services/ exposes UserSettingService, AppDataService, and PrivateModeService as .instance singletons, routes/ owns navigation, and presentation/ collects shared themes, animations, and widgets.

State management is deliberately lightweight: two global maps (appStateSettings, appStateData) hold preferences and app flags, an appStateKey GlobalKey exposes refreshAppState() so any widget can trigger a root rebuild, and the root reads from those maps inside build(). Internationalization runs through slang, charting through fl_chart, and the desktop frame through bitsdojo_window on Windows.

Caveats

• AGPL-3.0 license. Acceptable for personal use; commercial forks must publish their modifications.
• Limited platform reach today. Android and Windows are shipping; iOS, macOS, Linux, and the Web are not yet first-class targets despite the Flutter codebase making them technically reachable.
• In-app purchase dependency. in_app_purchase is bundled in pubspec.yaml, so any source build needs to configure billing or strip the plugin — the README still markets the app as "free, forever".
• Backup portability. Backups are local files; there is no built-in cross-device sync, so migrating between phones requires a manual export/import cycle.

Deployment notes

git clone https://github.com/enrique-lozano/Monekin.git
cd Monekin
flutter pub get
dart run build_runner build --delete-conflicting-outputs
flutter run -d android    # or: flutter run -d windows

Minimum: Flutter 3.44.1, Dart >=3.10.1 <4.0.0, plus a recent Android SDK or Windows 10+ for the desktop target. Drift's code-generation step (build_runner) must run after a fresh clone and after any schema change in lib/core/database/.

Integration tip: if you curate an Astro/Grove directory like this one, Monekin is a clean reference for any record tagged offline-first or money-manager — its Drift schema split, feature-organised lib/app/ layout, and singleton-service state model are easy to lift into a similar Flutter project.