Privacy Policy

Tellable ("we", "us", "our") operates the website at thegakko.com and its associated Chrome extensions. We provide AI-powered language lesson creation and review tools for teachers and students.

For privacy questions or requests, contact us at hello@gettellable.com.

Account Information

• Email address and display name (when you sign up)
• Role (teacher or student)
• Authentication credentials (managed by our authentication provider)

Lesson Data (Teachers)

• Lesson content you create or generate with AI
• Images generated for lessons

Recording Data (Students)

• Audio recordings of language lessons captured via the Chrome Extension
• Transcripts generated from those recordings
• Speaker labels and language detection data

Audio is processed in real-time and is not stored on our servers. Only the resulting text transcripts are saved to your account.

Usage Data

• Bookmarked lessons and review history
• AI-generated review materials and quiz results

• Provide and improve our language learning services
• Generate personalized review materials using AI
• Send lesson review emails (if you opt in)
• Analyze aggregated, anonymized usage patterns to improve content

We do not sell your personal data.

To operate Tellable, we rely on a small number of trusted third-party processors. These fall into the following categories:

• Authentication and database hosting — to manage your account and store your data securely
• AI content and review generation — to generate lesson materials and review questions
• Speech-to-text transcription — to convert lesson audio into text (Chrome Extension)
• Transactional email delivery — to send account and review emails
• Google Analytics — to understand aggregate website usage, only after consent
• Website hosting — to serve thegakko.com

Each provider processes data only as needed to perform its service and according to its own privacy policy. Transcript audio sent to our speech-to-text provider is used solely for transcription and is not retained for model training. Google may process analytics data outside the EEA under the safeguards described in its data-processing terms.

We use essential cookies for authentication and session management. These are strictly necessary for the service to function.

With your consent, we use Google Analytics to understand aggregate use of the website. It may process a random browser identifier, page path, referrer, approximate region, and browser/device information. The legal basis is your consent. Google Analytics and its network script are not loaded until you accept.

Analytics cookies (_ga and _ga_*) expire after no more than 12 months. User-level analytics event data is retained for no more than 14 months. Advertising storage, Google Signals, and ad personalization are disabled.

You can refuse analytics and continue using the site. You can also withdraw or grant consent at any time using the persistent Cookie settingsbutton. Withdrawal stops future analytics and removes accessible Google Analytics cookies. Your consent choice, its timestamp, and the notice version are stored in your browser until you change the choice or clear browser storage.

• Account data is retained while your account is active
• Lesson and transcript data is retained while your account is active
• When you delete your account, all associated data is permanently deleted

You have the right to:

• Access your data — view all data in your dashboard
• Delete your account and all associated data from your account settings
• Export your data (coming soon)
• Opt out of review emails at any time
• Withdraw consent for website analytics at any time using Cookie settings
• Complain to the data protection authority in your country

For any data requests, contact us at hello@gettellable.com.

Tellable publishes multiple Chrome extensions. Each has its own permissions and data handling, described below.

Tellable (Lesson Recorder)

Requests the following permissions:

• Tab Capture — to record audio from your current browser tab (Google Meet, Zoom, etc.)
• Storage — to store your authentication session locally

The extension only captures audio when you explicitly start a recording. Audio is processed locally and sent to a third-party speech-to-text provider for transcription. Raw audio is not stored on our servers.

Tellable YouTube Clip — Learn Languages with YouTube

Requests the following permissions:

• Storage — to save captured phrases locally in your browser and remember your preferred language pair
• Active Tab — to read caption text from the YouTube tab you're currently viewing
• Host access to youtube.com — to read caption DOM on YouTube watch pages

All captured phrases are stored locally in your browser and never transmitted to any server. Translations are performed on-device using Chrome's built-in on-device AI; caption text never leaves your browser. You may export your saved phrases as CSV at any time; export happens entirely client-side.

Tellable YouTube Clip does not require authentication and is not linked to any thegakko.com account.

Tellable is not directed at children under 13. If you are under 13, please do not create an account.

We may update this policy from time to time. We will notify registered users of material changes via email.

Questions about this policy? Email us at hello@gettellable.com.