Talea

A local-first, cross-platform budget app. Your money data lives on your device in a local SQLite database — no account, no cloud, no sync server in the loop. Talea targets Android and iOS, with the desktop build used for day-to-day development.

Status: actively developed and in testing (iOS via TestFlight, Android). See CHANGELOG.md for the release history.

What it does

• Monthly cashflow ledger with carry-over — for the selected month: income, expenses, and available to end of month; a surplus or overspend carries into the next month, per account. Swipe between months. In the current month, balance today shows what your bank should say right now, so a forgotten entry stands out.
• Accounts with a fixed currency and opening balance — plus summary accounts, a read-only type that combines several same-currency accounts into one overview (combined budget, merged entry list and stats, widget target).
• Entries (income/expense, optional note + category) with full CRUD, and same-currency account-to-account transfers.
• Categories — a global, descriptive list (emoji / preset icons).
• Recurring rules — weekly / monthly / yearly + every-N, with effective-dated amounts and single-occurrence skip or edit.
• Category budgets — a planned monthly amount per category that is held back from what's free to spend, and consumed by your actual purchases in it rather than added on top, with effective-dated amounts so a raise doesn't rewrite past months. Not envelopes: nothing is refused for going over, and an unspent budget just carries over as ordinary surplus.
• Statistics — per-month expenses broken down by category.
• Budget ring + home-screen widget — an abstract health ring on Android & iOS; the actual figures stay in-app.
• Optional biometric app lock (mobile).
• Backup & restore to your own Nextcloud over WebDAV (optional, manual).
• 12 languages, auto-detected from the device and switchable in Settings.

Why "local-first"

• The database is the source of truth and it sits on the device.
• The app is fully functional offline.
• Sensitive figures stay on-device, optionally behind a biometric lock.

Architecture

Talea is a Cargo workspace with a strict separation between pure domain logic and the platform shell:

talea/
├── core/        → pure-Rust domain + money math. No Tauri, no IO, no SQL.
│                  Fully unit-tested. The "what the app means" layer.
├── src-tauri/   → the Tauri shell. Bridges `core` to the frontend via
│                  commands, owns persistence (SQLite via sqlx) and platform
│                  integration. The "how it runs on a device" layer.
└── frontend/    → React + TypeScript (Vite). The UI. Talks to the shell
                   only through Tauri's typed `invoke` boundary.

The dependency direction is one-way and enforced by crate boundaries:

frontend ──invoke──▶ src-tauri ──calls──▶ core
                         │
                         └── sqlx ──▶ SQLite (on device)

core knows nothing about Tauri, the filesystem, or SQL — the budgeting rules and money arithmetic stay testable in isolation and portable if the shell ever changes. The full rationale, the budgeting model, and the schema live in docs/DESIGN.md.

Prerequisites

• Rust (stable, ≥ 1.99) with cargo.
• Node.js 20.19+ or 22.12+ (what Vite 8 needs) and npm.
• Tauri 2 system dependencies for your platform — see the Tauri prerequisites.

Getting started

# Install frontend dependencies
npm --prefix frontend install

# Run the desktop dev build (starts Vite, then the Tauri shell)
cargo tauri dev

# Production build
cargo tauri build

Documentation

• Product model & design decisions → docs/DESIGN.md
• Building, on-device testing, signing & release, troubleshooting, plus the quality gates, the sqlx offline cache, and how to reset local data → docs/DEVELOPMENT.md
• Release history → CHANGELOG.md

License

MIT.