Project · 06 · Rust · Android · CRDT · MMXXVShipped

Aentic Budget.

Offline-first, bilingual expense tracker — receipt OCR, voice input, P2P CRDT sync. One Rust core compiled twice — UniFFI into Android, Tauri into desktop.

Shared cores reward you twice and punish you four times. Both worth it.

In brief

Aentic Budget is an offline-first expense tracker for Greek and English speakers. A single Rust core library handles storage, analytics and budgets, and is compiled twice: through UniFFI for a Jetpack Compose Android app and through Tauri IPC for a React desktop app. It parses Greek receipts with OCR, accepts spoken expenses, and syncs devices peer-to-peer using CRDTs. Version 1.0.0 was released on 2026-03-13.

Desktop (Tauri/React) dashboard in its empty default state, 1440x900
Desktop (Tauri/React) dashboard in its empty default state, 1440x900
Android home screen: wallet balances, monthly total by category and budget status bars (sample data)
Android home screen: wallet balances, monthly total by category and budget status bars (sample data)
Android budgets screen tracking monthly limits per category, with one budget over its limit (sample data)
Android budgets screen tracking monthly limits per category, with one budget over its limit (sample data)

Specification

Core
aentic-budget-core — one Rust library, compiled twice: UniFFI → Android/Kotlin (Jetpack Compose), Tauri IPC → desktop (React/TS)
Sync
CRDT change tracking, Lamport clocks, last-write-wins, MessagePack — no cloud
Input
Manual · OCR (Tesseract, Greek receipt parser: AFM, VAT) · voice (Sherpa-ONNX)
Tests
77 in the core
Released
v1.0.0 — 2026-03-13; Android builds through v9
Source
Private

From the README

Offline-first, bilingual (Greek/English) personal expense tracker with receipt OCR, voice input, and peer-to-peer sync.

Features

  • Manual, OCR (Tesseract), and voice (Sherpa-ONNX) expense entry
  • 23 bilingual categories with Greek/English names
  • Budget tracking with compliance monitoring
  • Receipt scanning with Greek receipt parser (AFM, VAT breakdown)
  • P2P sync via CRDT change tracking (no cloud required)
  • CSV export with BOM for Greek Excel compatibility
  • JSON full-database export/import
  • SQLite backup via VACUUM INTO
  • Analytics: monthly summaries, spending trends, category breakdowns
  • Store management with GPS location and visit tracking
  • Midnight Silk dark theme design system

Changelog · v1.0.0 — 2026-03-13

  • SQLite database with WAL mode, 8 tables, full migration system
  • 23 bilingual categories (Greek/English) with icons and colors
  • CRUD operations for expenses, categories, stores, budgets, tags, receipts
  • Receipt line items with quantity, unit price, and category mapping
  • Greek receipt OCR parser: AFM extraction, VAT breakdown, date/time parsing
  • Voice expense parser: amount, description, store/category hints
  • Budget tracking: weekly/monthly/yearly periods with compliance monitoring
  • Analytics: monthly summaries, spending trends, category breakdowns, MoM comparison
  • Store management: GPS coordinates, AFM lookup, nearest-store queries, visit tracking
  • Tag system with many-to-many expense-tag relationships
  • Payment method breakdown analytics
  • Top expenses queries