Windows public beta

Your statements. Your computer. Useful answers.

SignalSpace imports bank and credit-card statements, checks the numbers locally, and turns them into a practical monthly check-in. No account, no subscription, and no finance-data server.

Download for Windows Take the product tour

Current version 3.2.0. Existing installs update through Settings > App updates.

Synthetic demo data

Local SQLiteYour database stays on your PC

1,000+ testsFinance, import, UI-contract, and safety checks

Fail-closed importsAmbiguous dates or amounts are refused

Optional AIBeta, read-only, and off by default

Product tour

See what the desktop app actually does

This page is a tour, not a browser copy of the finance engine. The real application is the Windows download and every screenshot below uses generated demo transactions.

The first five minutes

It tells you what to do before you have any data

A new profile opens on a short checklist instead of an empty dashboard: where your data lives, which file to bring, and what happens once it lands. It disappears once you have imported something, and Settings can bring it back.

No account to create and nothing to sign in to
CSV is the format to use; PDF import is Beta and only reads some layouts
Plan waits until you have enough months for it to mean anything

Import without hiding the risky part

SignalSpace detects a statement's columns, date format, and amount convention once. If the evidence conflicts, the import stops instead of guessing and quietly corrupting the ledger.

Separate cash flow from transaction signs

Positive means money entered that account. Negative means money left. Transfers and card payments keep their signs without becoming fake income or spending.

Plan with bills that land at different times

Monthly bills, quarterly costs, annual renewals, savings, and a safety buffer share one equation. Forecasts qualify missing or stale data instead of pretending every month is complete.

Track net worth from readings you entered

Cash, investments, other assets, and debt are recorded month by month. The chart never fills gaps or invents a balance from spending activity.

Privacy boundary

Local-first is a design rule, not a badge

Statement parsing, categorization, planning, charts, backups, and the SQLite database all run on your computer. There is no SignalSpace account, telemetry service, or background financial-data sync.

Optional AI is different and the app says so plainly. If you enable an online provider, only the evidence packet for the question you asked is sent to that provider. AI is read-only and cannot change the ledger.

Read the full security and privacy notes

Stays local

Statement files and SQLite database
All finance calculations and charts
Backups, rules, plans, and preferences

Leaves only when you ask

An optional AI evidence packet
Only to the provider you configured
Never with write access to your data

How it works

Three layers, one source of financial truth

React + TypeScriptNative desktop interface and charts

Python engineImports, semantics, planning, and insights

SQLiteLocal transactions, settings, and backups

A small Rust/Tauri shell packages the app for Windows and talks to the Python engine over stdin and stdout. There is no browser tab or localhost server.

Public beta

What is still rough

Windows may show “Windows protected your PC” because this public beta does not yet have a paid Authenticode certificate. The updater is separately signed, and the setup guide explains what to expect.
Update checks happen only when you press the button in Settings.
Bank exports vary, so an unfamiliar CSV may need mapping or may be refused.
AI provider support is Beta and is not required for any finance feature.
Your bank statement remains the final source of truth.

Try it with demo data before importing anything real.

The source, installer, checksum, setup guide, and known limits are all public.

Download for Windows Read the source