Email liweba@gmail.com. Include the app version, iOS version, device model, and steps that reproduce the issue. Please do not send private text or payment information.
Subscriptions
Use Apple’s subscription management page to cancel or change Oegugin Pro. In the app, open You → Oegugin Pro → Restore purchases after reinstalling or changing devices.
Sentence Lens limit
The free version includes five Sentence Lens analyses per local calendar day. Dictionary search and saved-word review remain available. Oegugin Pro removes the daily Lens limit and the two-project Reader limit.
Pronunciation
Playback uses a Korean voice installed by iOS. If no suitable voice is available, open Settings → Accessibility → Spoken Content → Voices → Korean and download a voice.
Imported documents
Oegugin supports plain text, UTF-8 or UTF-16 text files, and PDFs that contain selectable text. Scanned-image PDFs require OCR before import.
Privacy and deletion
Your learning data and reading text stay on the device. Optional content-free analytics can be disabled under You → Data and trust. Delete projects and saved items in the app; deleting Oegugin removes its local data, subject to your device backup settings.