Privacy Policy — Structune

Last updated: July 2026

Structune does not collect any personally identifiable information. The extension sends your builder input to Google's Gemini API when you click Generate, and separately sends anonymous, aggregated feature-usage events to Google Analytics (GA4) to help us understand which features are used. If you activate Structune Pro, your license key is sent to Gumroad only for license verification. No prompt content, API keys, license keys, or saved Library data are ever included in analytics events.

Data Handling

Data	Where it stays	Sent externally?
Gemini API key	Device only (`chrome.storage.local`)	Sent only to Google's Gemini API endpoint when you click Generate or Verify
Builder input & generated result (draft)	Device only (`chrome.storage.local`)	The input text is sent to Google's Gemini API when you click Generate — no other transmission
Saved prompts (Library)	Device only (`chrome.storage.local`)	No
Tags, favorites, and custom components	Device only (`chrome.storage.local`)	No
Settings (language, sort order, plan state, and preferences)	Device only (`chrome.storage.local`)	No
Daily request count	Device only (`chrome.storage.local`)	No
Gumroad license key	Device only (`chrome.storage.local`) after activation	Sent to Gumroad's license verification API only when you activate Pro
License status (Free or Pro)	Device only (`chrome.storage.local`)	No
Anonymous analytics client ID (random UUID)	Device only (`chrome.storage.local`)	Sent to Google Analytics with each usage event — not linked to your name, email, or API key
Feature-usage events (e.g. Generate clicked, Library opened, category filter used)	Not stored on device	Sent to Google Analytics (GA4) for aggregate usage statistics

What the Extension Does

Sends your builder input to the Google Gemini API using the API key you provide, when you click Generate.
Displays the structured spec result locally in the popup.
Stores your saved prompts, tags, favorites, custom components, settings, and draft locally in your browser.
Verifies a Gumroad license key only if you choose to activate Structune Pro.
All processing happens on your device. Structune does not operate any backend server.

Google Gemini API

When you click Generate, the text you entered in the builder is sent to Google's Gemini API (generativelanguage.googleapis.com) using your own API key. This request is made directly from your browser to Google's servers — no intermediate server is involved.

Google's privacy policy governs how your data is handled by the Gemini API: https://policies.google.com/privacy

Gumroad License Verification

Structune Pro is activated with a Gumroad license key. When you choose to activate Pro, the extension sends your license key and Structune's Gumroad product ID to the Gumroad license verification API (api.gumroad.com/v2/licenses/verify). This request is used only to validate the license and register activation for the device. Prompt content, Gemini API keys, Library items, tags, custom components, and settings are not included in this request.

Gumroad's privacy policy governs this interaction: https://gumroad.com/privacy

Google Analytics (GA4)

Structune uses Google Analytics 4 to collect anonymous, aggregated statistics about which features are used (e.g. Generate, Save, Library filters, Settings, license activation result). Each event is tied only to a randomly generated client ID stored on your device — never to your name, email, Gemini API key, license key, prompt content, or saved Library data.

Google's privacy policy governs how Google Analytics handles this data: https://policies.google.com/privacy

What the Extension Does Not Do

Does not collect or transmit your API key to any server other than Google's Gemini API.
Does not include license keys in analytics events.
Does not track browsing history or access any website content.
Does not include prompt content, API keys, license keys, Library data, tags, or custom components in analytics events.
Does not use crash reporting or any third-party SDK other than Google Analytics.
Does not sync data across devices.
Does not execute remotely hosted code.
Does not require an account of any kind.

Permissions Used

Permission	Reason
`storage`	Saves your API key, prompts, Library items, tags, custom components, license status, settings, draft, and daily usage count locally on your device
`clipboardWrite`	Copies generated prompts to the clipboard when you click Copy
`https://generativelanguage.googleapis.com/*`	Sends requests to the Gemini API to generate structured specs
`https://www.google-analytics.com/*`	Sends anonymous feature-usage events to Google Analytics
`https://api.gumroad.com/*`	Verifies Gumroad license keys when you activate Structune Pro

Changes to This Policy

If this policy is updated, the "Last updated" date above will be revised. Continued use of the extension after any changes constitutes acceptance of the updated policy.

Contact

If you have any questions about this Privacy Policy, please contact:

Email: niztodream@gmail.com