NK Finance

NK Finance is a complete personal finance tracker built as a single self-contained web app. It covers a net worth dashboard with trend history, assets and liabilities tracking (bank accounts, investments, real estate and more), transaction logging with category budgeting, cash-flow forecasting, a built-in debt-payoff planner (avalanche and snowball methods), a simple investment allocation advisor, and support for 10 currencies.

The Cloud Edition syncs across your own devices via your own free Firebase project, so your financial data lives in infrastructure you control rather than on a third-party server. There is also a Local Edition with zero setup: no account, no Firebase, everything runs entirely in the browser on a single device.

Both editions are a one-time purchase — no subscription, no recurring billing.