Super English ("the App") is an English conversation practice app powered by AI. This Privacy Policy explains how we handle your personal information.
By using the App, you are deemed to have agreed to the collection and use of information described in this policy. However, for the transmission of data to a third-party AI service (OpenAI), we separately obtain your explicit consent by checkbox on a dedicated consent screen within the App.
Information We Collect
The app collects the following information:
Account information: email address, username, display name
Profile icon: we store only the identifier of the image you picked from those bundled with the app. We do not access your photo library and never upload an image
Device identifier: an anonymous device-specific ID (UUID) stored in the Keychain to prevent abuse
Learning data: conversation history, grammar mistakes, vocabulary, study time, streak length
Audio data: processed temporarily to convert speech to text when you use voice input (see below)
Usage data: session counts, feature usage, UI language and similar statistics
Ticket and ad records: tickets granted and consumed, and the number of rewarded videos watched (to prevent abuse and enforce daily limits)
About audio data:
English voice input is first converted to text by your device's own speech recognition. That runs entirely on your device and the audio itself is not transmitted.
Only when on-device recognition fails, and for voice input in your native language, is the audio sent to OpenAI's Whisper API for transcription. Audio sent this way is not retained after transcription.
About the advertising identifier:
The app does not collect the advertising identifier (IDFA). It does not show the tracking permission prompt, and ads are always served as non-personalized ads. You are not tracked for behavioral targeting.
Data Transmission to AI Services and Consent
To provide its conversation features, the app sends your conversation text and audio data to third-party AI services. On first sign-in, a dedicated in-app screen explains what is sent, to whom, and for what purpose, and obtains your explicit consent via a checkbox. No data is sent without that consent.
Data sent: conversation text, learning context (level, summaries of past conversations), audio data (only in the cases described above), and the text to be spoken aloud
Purpose: generating replies, grammar correction and coaching, speech-to-text, and text-to-speech
If you do not consent: AI conversation, warm-up, grammar correction and speech recognition are unavailable.
You can review or change your consent at any time from Settings → "Legal" → "AI data sharing consent". Withdrawing consent disables the AI features above immediately.
The AI models and providers we use may change depending on service quality, cost and availability. If the recipients change, we will update this Policy and notify you in the app.
How We Use Information
Creating, authenticating, and managing your account
Providing AI English conversation sessions (using OpenAI GPT-series models, speech recognition, and Google Cloud Text-to-Speech)
Providing learning features such as grammar-mistake records, the wordbook, and trend analysis
Preventing abuse (limiting the number of accounts per device)
Improving service quality and addressing issues
Sharing With Third Parties
We do not sell, disclose or share your personal information with third parties except in the following cases:
OpenAI, LLC (with your consent): conversation text, learning context and audio data are processed under OpenAI's privacy policy. Sent only if you have consented
Google LLC (speech synthesis, with your consent): the text to be spoken aloud is sent to Google Cloud Text-to-Speech
Google AdMob (ad serving): to serve ads and measure impressions, information such as device type, OS, approximate region, and records of ad displays and views is sent to Google. We request non-personalized ads only and do not use the advertising identifier (IDFA)
Where required by law: upon a formal request from a legal or regulatory authority
International transfers:
OpenAI, LLC and Google LLC are both located in the United States. Sending data to them constitutes a transfer of personal data outside your country, based on your consent.
We do not sell your data: we never sell your data to third parties.
Data Protection
Your data is protected by password hashing, JWT authentication, and HTTPS encryption. Data is stored on EC2 servers on AWS (Tokyo region).
Data Retention and Deletion
When you delete your account: you can request deletion at any time from the Settings screen in the App. Upon request, personal information such as your email address, username, and display name is anonymized immediately
Data after anonymization: conversation history, learning records, and similar data are retained within the system in a non-identifiable form (for auditing and abuse investigation)
Conversation logs: automatically deleted two years after last use
Voice data: discarded immediately after conversion to text
How to delete from within the App:
Settings → Account → "Delete account" → type "DELETE" to confirm
Your Rights
Request access to and confirmation of the personal data we hold
Request correction of inaccurate data
Delete your account: you can do this at any time from the Settings screen in the App (effective immediately)
Withdraw consent to specific data processing (changeable from Settings → "AI data sharing consent")
To exercise other rights, please contact us at the address below.
Children's Privacy
The App is not intended for children under 13. If we unintentionally collect information from someone under 13, we will delete it promptly.
Changes to This Policy
This Privacy Policy may be updated from time to time. For significant changes, we will notify you via an in-app notification or email.