Treeline review
A free, local-first finance app for budgets, net worth, and AI-agent workflows.
Reviewed by iTechGuides Editors · Editorial team · Updated Oct 2026
Treeline is a free, open-source personal finance application for individuals who want local control of their financial data. It runs on Windows, macOS, and Linux, storing information in a local DuckDB database rather than requiring a Treeline account or subscription. Its core tools cover transaction tagging, automatic categorization rules, budget tracking with rollovers, spending analysis, and net-worth tracking. The product is particularly suited to solo users and technically minded people who want their finance data available locally and extensible through plugins.
Pricing is straightforward: the single Treeline plan is free and includes the desktop app, plugins, CSV import, SQL access, and agent integration. CSV imports support column mapping and deduplication, while automatic bank synchronization connects through SimpleFIN or Lunch Flow. Those synchronization providers are separate services and are paid separately, so users seeking automatic updates should account for that additional arrangement. Treeline also connects with Claude Desktop, Claude Code, Gemini CLI, OpenClaw, and MCP, giving its AI-agent features a wider workflow fit than a conventional desktop budgeting tool.
The product’s strongest distinction is the combination of local data storage, built-in SQL querying, plugins, and agent access. Plugins can support savings goals, subscriptions, cash flow, and other finance features, while net-worth views include trends and account breakdowns. That flexibility will appeal to users who want to inspect or extend their financial data. Treeline is less suitable for people who expect a mature, mobile-first experience or prefer bank connectivity managed entirely within one service. Users comfortable with desktop software, CSV workflows, and beta-stage products should find the feature set more relevant than those seeking a finished, broad consumer-finance platform.
Treeline pros and cons
- Where it wins
- Free open-source desktop app for Windows, macOS, and Linux
- Local DuckDB storage with built-in SQL querying
- CLI and MCP access for AI-agent workflows
- Where it doesn't
- The software is currently in beta
- Bank synchronization uses third parties and is paid separately
- Desktop deployment does not include mobile support
Treeline fact sheet, pricing and score →
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