Privacy

In effect since September 2026.

What data we keep

Only what you type in: accounts, transactions, categories, budgets, goals, and any preferences you set (language, currency, whether you share expenses with someone). BaseCero doesn’t require sign-up or any personal data to work.

Where it lives

On your device, in a local database (OPFS, the browser’s private file system). There’s no server: your data doesn’t sync or get uploaded anywhere.

What leaves your device

Nothing, unless you deliberately export it or dictate an expense by voice (more on that below). BaseCero has no telemetry, no analytics and uses no cookies: nobody’s watching.

Like any website, the host (Vercel) keeps standard access logs (IP, user agent) when serving files. BaseCero never receives, reads or uses any of it.

Voice dictation (optional)

If you tap the mic in Log transaction to dictate an expense instead of typing it, speech recognition is handled by your browser, not by BaseCero. The browser sends your voice to its maker’s server to turn it into text — Google in Chrome, Apple in Safari, and so on for each one. BaseCero only receives the recognised text: it never receives or stores that audio.

It’s optional: if you type the sentence instead of dictating it, nothing leaves your device.

Backups

You can export a plain .xlsx or a password-encrypted .bce copy (AES-256-GCM). Encrypted backups only decrypt inside BaseCero, with your password; if you forget it there’s no way to recover it — it isn’t stored anywhere.

How to delete your data

Uninstall the app, or clear the site’s data from your browser’s settings (in Chrome: Settings → Privacy and security → Site data). Either one also removes the local database.

Contact

Questions, or something doesn’t add up? Open an issue on GitHub.