Your data never leaves your Mac.

What Felt collects

Nothing.

Felt makes zero network calls. No analytics. No telemetry. No crash reporting. No usage tracking. No A/B tests. No "anonymised" data. No fingerprinting. No cookies. Nothing.

The app does not connect to the internet. There is no server. There is no account. There is no cloud.

Where your data lives

Everything Felt stores lives in a single SQLite database on your Mac:

~/Library/Application Support/Felt/felt.sqlite

This database contains:

• Your current settings (mode, scheduling preferences, sound choice)
• Check-in history (which prompts were shown, whether you responded)
• Prompt ratings and starred/anchored prompts

That's it. No names, no emails, no device identifiers, no IP addresses.

What about the HTTP API?

Felt runs a small HTTP server on localhost:21323 so the CLI tool and MCP server can communicate with the running app. This server listens on localhost only — it is not accessible from the network. It uses a bearer token stored locally for authentication.

No data leaves your machine through this API. It's how the different parts of Felt talk to each other, entirely on your computer.

If someone asked for your data

Deleting your data

To remove all Felt data from your Mac:

1. Quit Felt
2. Delete ~/Library/Application Support/Felt/
3. Optionally, delete ~/.config/felt/ (contains the API auth token)

That's a complete and permanent deletion. There is no cloud backup, no "30-day retention period," no ghost copy anywhere.

Updates and network access

The only time Felt will make a network request is to check for app updates (via Sparkle, a standard open-source Mac update framework). This check contacts our update server to see if a new version is available. It sends no personal data — only the app version and macOS version, as is standard for Sparkle. You can disable update checks entirely in settings.

Third-party code

Felt uses four open-source dependencies:

• GRDB.swift — SQLite database wrapper (MIT licence)
• Swift NIO — Local HTTP server (Apache 2.0 licence)
• swift-argument-parser — CLI tool framework (Apache 2.0 licence)
• MCP swift-sdk — AI assistant protocol (MIT licence)

None of these dependencies collect data or make network calls.

In Apple's terms

If Felt were on the App Store, its privacy nutrition label would read: "Data Not Collected." No data linked to you, no data used to track you, no data collected at all.