Your data, your device

Privacypolicy.

The short version: PikuZen doesn’t collect, store or sell your data. Here is the full version, nothing hidden.

Last updated: October 14, 2026Read it allAsk a question
No trackingNo adsNo servers
0trackers, cookies or telemetry
0PikuZen servers storing your data
1external call: the Polar licence check for Pro
100%of your settings stay on your device

Where your words go.

When you generate a reply, this is the whole journey. No stop at a PikuZen server, because there isn’t one.

Step 1You, on XThe text of the post you interact with
Step 2PikuZenRuns locally in your browser
Step 3Your AI providerChatGPT, Gemini or Grok, whichever you chose
Pro onlyPolarLicence key and activation ID, nothing else. Checked every 2 hours.
Not in the picturePikuZen serversWe don’t operate any, so nothing is sent here.
01

Overview

PikuZen is a Chrome extension that helps you write AI-assisted posts, replies and direct messages on X (Twitter) in 42 languages. We want to be clear about what it does with your data, and how little of it there is.

Key point: PikuZen does not collect, store or sell your personal browsing data. AI processing happens in your own browser through ChatGPT, Gemini or Grok. The only external call PikuZen makes itself is license key verification with Polar for Pro subscriptions.

02

Data collection

Through the extension, PikuZen does not collect any of the following:

  • Personal information (name, email, phone number)
  • Browsing history or analytics
  • X (Twitter) account credentials
  • Cookies or tracking identifiers
  • Usage statistics or telemetry

If you email us or use the contact form on this website, your message opens in your own email app and we only receive what you choose to send. See Contact.

03

Data processing

The extension processes the following data locally in your browser:

  • Post content: the text of posts you interact with is read from the X page to generate relevant AI replies. This text is sent to the third-party AI service (ChatGPT, Gemini or Grok) that you chose as your provider.
  • Post images: if image upload is enabled, images from a post (fetched via pbs.twimg.com) may be sent to your selected AI provider for context.
  • Your settings: your preferences (tone, reply count, AI provider, templates and so on) are stored locally using Chrome’s chrome.storage.local and chrome.storage.sync APIs.
  • License key: if you activate a Pro subscription, your license key is sent to Polar’s official API for verification. No personal data is included in this request.
04

Third-party AI services

When you use PikuZen, post content is sent to your chosen AI provider through its web interface, embedded in the extension’s side panel. These services have their own privacy policies:

Important: PikuZen does not operate its own servers. AI requests go directly from your browser to your chosen AI provider’s website. The only external API call we make is to Polar for license verification.

05

Subscription and license verification

PikuZen offers a Pro subscription. Purchases are made on Polar’s checkout page, and Polar handles payment and billing. Your payment details are entered with Polar. They never pass through the PikuZen extension, and we do not see or store them.

After purchase you receive a license key. When you enter it in the extension, the following data is sent to Polar’s API (api.polar.sh):

  • Your license key
  • Your license key activation ID (to identify your device)

No personal information (name, email, payment details) is sent by the extension. Polar returns only the license status. For active Pro users this check runs every 2 hours and when the extension starts.

For Polar’s own data practices, see the Polar Privacy Policy.

06

Data storage

All data is stored locally on your device:

  • Your settings are stored via chrome.storage.local
  • Subscription status syncs via chrome.storage.sync to keep your subscription intact
  • No data is stored on external servers by PikuZen
  • No databases or cloud storage are used
  • Uninstalling the extension removes the data stored locally
07

Chrome permissions

PikuZen asks for the following browser permissions, and only for these reasons:

sidePanelShows the PikuZen control center beside your X tab, so you can manage AI settings, view comments and generate replies without leaving the page.
activeTab and scriptingAdds the PikuZen reply button to the X timeline and reads post text and context from the page when you click it.
storageKeeps your custom tone prompts, selected AI provider, interface preferences and subscription status between sessions.
tabsLets the background service worker manage AI provider pages and pass post data between extension parts using chrome.runtime.sendMessage.
declarativeNetRequestModifies routing headers only to get past X-Frame-Options and Content-Security-Policy blocks, so AI provider websites can load inside the extension’s embedded frames.
alarmsRe-checks your Pro license key with Polar every 2 hours, so revoked or expired licenses are detected automatically. No user data is collected.
cookiesChecks whether you are signed in to your AI provider (ChatGPT, Gemini, Grok). No authorization data is modified, stored or sent anywhere.
offscreenCreates a hidden background document that talks to your AI provider page to pick up reply drafts. It has no visible interface.

Host permissions

The extension needs access to these specific domains:

  • x.com / twitter.com: to add the PikuZen buttons and read post context from the page
  • chatgpt.com / chat.openai.com: to load ChatGPT in the embedded AI panel
  • gemini.google.com: to load Gemini in the embedded AI panel
  • grok.com: to load Grok in the embedded AI panel and pick up generated replies
  • pbs.twimg.com: to fetch post images for AI context, when image upload is enabled
  • api.polar.sh: to verify Pro license keys
08

Data sharing

PikuZen does not:

  • Sell user data to any third party
  • Share data with advertisers
  • Use data for profiling or targeting
  • Transfer data to data brokers or information resellers
  • Use data for creditworthiness or lending purposes
  • Use data for personalized advertising
09

Data retention

PikuZen keeps data only as long as it is needed to work:

  • Your settings (tone, templates, provider preferences) stay on your device until you uninstall the extension or reset them.
  • Subscription status is kept in chrome.storage.sync and can persist across reinstalls. It contains no personal information.
  • Post content is processed in memory only while a reply is being generated. It is never written to disk by PikuZen and never sent to our servers.
  • Uninstalling the extension removes the data stored locally.
10

Your rights and control

You stay in control of your data:

  • Review: all stored settings can be viewed in the extension’s AI Settings tab.
  • Delete: reset all settings to defaults with the Reset button in the extension, or uninstall the extension to remove its data.
  • Opt out: turn off image upload and other features one by one with the toggles in Settings.
  • Portability: because PikuZen stores no data on external servers, there is no remote data to export or transfer.
11

Security

PikuZen follows secure data handling practices:

  • Communication with AI providers (ChatGPT, Gemini, Grok) happens over HTTPS.
  • License key verification with Polar uses HTTPS requests.
  • No data is sent over unencrypted channels.
  • The extension asks only for the permissions it needs for its core features.
  • A Content Security Policy (CSP) is enforced on extension pages to help prevent code injection.
12

Children’s privacy

PikuZen is not intended for use by children under 13. We do not knowingly collect data from children.

13

Changes to this policy

We may update this privacy policy from time to time. Changes will be reflected in the “Last updated” date at the top of this page. Continued use of the extension after changes means you accept the updated policy.

14

Contact

If you have questions about this privacy policy or the extension, get in touch with us.

Contact us

If you email us, we receive your email address and message, and use them only to reply to you.