Writer Studio

PRIVACY POLICY — WRITER STUDIO

Last updated: July 30, 2026

THE SHORT VERSION:

Writer Studio does not collect, store, or transmit any of your data to anyone. We have no servers, no analytics, and no accounts. What you write stays on your Mac unless you choose to send it to a third-party AI provider — and even then, it goes directly from your Mac to that provider, never through us.

WHAT DATA THE APP HANDLES, AND WHERE IT GOES:

Text you write or dictate

Local (Ollama) engine, the default option: Your text is sent to Ollama running on your own Mac. It never leaves your computer.

Cloud engines (OpenAI, Anthropic, Google Gemini) — optional, off by default: If you choose to enable one, the text you ask Writer Studio to rewrite is sent directly from your Mac to that provider's API, using an API key you supply yourself. Writer Studio does not see, log, or retain this text on any server we control, because we don't operate one.

Provider privacy policies:

OpenAI: openai.com/policies/privacy-policy

Anthropic: anthropic.com/legal/privacy

Google: policies.google.com/privacy

API keys:

If you add an API key for a cloud provider, it's stored in your Mac's Keychain, protected by macOS's own encryption. It's never transmitted anywhere except in the authenticated request to that provider's API, and never sent to us.

Microphone and speech recognition:

If you use dictation, audio is processed by Apple's system speech recognition to convert it to text. Writer Studio does not record, store, or transmit audio itself.

Preferences, History, and Custom Presets:

Your selected AI engine, rewrite history, saved presets, and similar settings are stored locally on your device using standard macOS app storage. None of this is transmitted to us. If you have a paid Apple Developer account with iCloud enabled, Custom Presets may optionally sync across your own Macs via Apple's iCloud — this data stays within your own iCloud account and is never accessible to us.

WHAT WE DON'T DO:

We don't run any servers that receive your writing.

We don't use analytics, tracking, or advertising SDKs.

We don't sell or share data, because we don't collect any.

We don't require an account or sign-in.

YOUR CHOICES:

You can use Writer Studio entirely offline with the Local (Ollama) engine and never send data anywhere.

You can remove a stored API key at any time from AI Engine settings, which deletes it from the Keychain.

You control which AI provider, if any, receives your text.

CHILDREN'S PRIVACY:

Writer Studio is not directed at children and does not knowingly collect data from children, because it does not collect data from anyone.

CHANGES TO THIS POLICY:

If this policy changes, the "Last updated" date above will change accordingly. Material changes will be reflected in the app's release notes.

CONTACT:

Questions about this policy: support@marimbaaustralia.com

Writer Studio is developed by Leonard Clark.