Cash-flow forecast
Your account, day by day for 30 days to 6 months, with the lowest point in plain language. Credit cards come out on their due dates from real statement balances, and paydays and payments land on business days.
Runway
A self-hosted personal finance app that tells you how much runway your cash has. Bank sync, a day-by-day cash-flow forecast, budgets, reports, investments and net worth, on your own hardware.
Why Runway
Section titled “Why Runway”Most budgeting apps look backwards: what did I spend last month? Runway looks forward. It takes your checking balance, your paychecks and bills, and what each credit card will actually charge you on its due date, and draws the balance day by day for the next few months, so you can see the tightest moment before you get there.
It runs on your own computer or home server, keeps its data in one database you control (SQLite, or Postgres if you prefer), and is written in Python with a handful of well-known libraries.
Features
Section titled “Features”Bank sync, account by account
SimpleFIN or Plaid for each account, once a day and on demand. Switching providers keeps your history.
Bills, income and rules
Paychecks, bills and subscriptions on any schedule, matched automatically. Categories, splits, bulk editing, a review queue and rules, with optional AI categorization.
Store orders
A browser extension reads your Amazon, Target and Costco orders and splits each card charge by what you bought.
Budgets and reports
Monthly budgets with rollover, a cash-flow Sankey, spending over time, merchants, income against spending, and a drill-down breakdown.
Net worth, investments and equity
Accounts, homes and vehicles minus debts, recorded daily; brokerage performance with live prices; stock options, RSUs and Carta grants; a retirement planner.
Churning
Sign-up bonuses, 5/24, annual fees, card benefits, bank bonuses and a plan for the cards you want next.
An assistant-ready API
An MCP endpoint lets Claude or another assistant, once you approve it, answer questions about your money.
Push notifications, autosave everywhere, a dark interface that works on a phone (and installs as an app), and one-file backups that restore into SQLite or Postgres round it out.
Where to go next
Section titled “Where to go next”Quick startRun it with Docker or from source and connect a bank.
Using RunwayEach part of the app, starting with the forecast.
ConfigurationEvery environment variable.
ContributingSetup, the checks, the database, the code layout and releases.