Private by default.
Lumen stores keyboard preferences and learned words locally on the device. It does not sell typed text or use it for advertising.
PRIVACY · KAKAO + LUMEN
Your words
remain yours.
L
You choose what leaves.
Dictionary and suggestions work locally. Any future network-assisted Grammar, Rewrite or Translate request must clearly show the selected text before it is sent. Never submit passwords, account numbers or security codes.
Learning can be cleared.
You can clear learned words from Lumen settings. Learned vocabulary stays on the device and is excluded from Android backup and device transfer. Internet access is used only for features that require online services, such as explicitly requested Grammar, Rewrite or Translate actions.
Your profile requires your permission.
Google sign-in provides KAKAO with your name, email address and profile picture. KAKAO creates a separate Supabase profile only after you confirm consent. You can delete that saved profile from the account window. Google passwords are never provided to KAKAO.
Preview, not policy theatre.
This summary describes the current preview. A complete public privacy policy, contact address and data-retention schedule will be published before public account collection or any app-store release.