RedpenYour voice. Your choice.
Speech and AI processing
Redpen sends your transcript to fal.ai and ByteDance Seed to generate grammar corrections and coach replies. If Seed cannot return valid JSON, Redpen may send the same transcript to NVIDIA Nemotron through fal.ai as a fallback model. Your transcript may be processed by these providers. Continue only if you agree.
Redpen is built to recognize your speech on your iPhone, and only the transcript you review and confirm is sent to our servers to generate corrections, after your explicit consent. The app is not yet released, and we will update this page with how speech is handled in the release version. Redpen does not store audio.
If on-device speech is unavailable, use typed input. Check the transcript before sending it for an AI review.
Before any transcript goes to a third-party AI provider for English tutoring, Redpen shows the current provider disclosure and asks for your explicit consent. You can review and edit the transcript before confirming it. AI can make mistakes.
The disclosure names the active AI provider. If the provider or disclosure changes, Redpen asks for consent again. If current consent details are unavailable, no transcript is sent. Optional server speech stays off unless Redpen offers it and you agree to its disclosure.
What Redpen keeps
Redpen does not store audio. Unsaved transcripts expire after 30 days. Saved sessions remain until you remove their saved status or delete your account. Expired unsaved sessions become inaccessible immediately and are physically removed during daily cleanup. Managed database backups follow the hosting provider’s retention policy.
Your profile, session transcripts, saved mistakes and device credential support your practice. No advertising or sale of personal data.
Payments stay with Apple
Apple processes subscription payments and may retain payment records. Deleting your account removes your profile, transcripts, saved sessions, credentials and purchase associations from Redpen. It does not cancel your Apple subscription.
Your controls
Review or withdraw AI consent in Settings. Delete your account in Settings > Delete account to remove your Redpen data.
Privacy contact
Use this address for privacy questions. Do not include passwords, payment details or recordings.