01 — Support
Help with Moonlight
Get in touch
moonlight.arche.support@gmail.com
Tell me what you were doing, what you expected, and what happened instead. Your iOS version and iPhone model help. Screenshots help more.
Common questions
The mic didn't pick up my word.
Moonlight recognises speech on the phone itself, which needs both Microphone and Speech Recognition permission — check Settings → Moonlight. It is tuned for single words rather than sentences, so say the word on its own, and give it a beat before you tap stop.
A word came back with no definition.
The bundled dictionary is Princeton WordNet 3.1 — 86,811 headwords. It doesn't carry proper nouns, very recent coinages, or every inflected form, so try the base form of the word. Apple's own dictionaries cover a lot of the rest once you've downloaded them.
Definitions look different on my phone than on someone else's.
Apple's dictionaries are downloaded per device, on demand — a phone that has never downloaded one will fall back to Moonlight's bundled entry. To add them: Settings → General → Dictionary, then tick the ones you want. Whichever entry you read, the WordNet text is what gets saved to your word bank.
The total page count is wrong.
Book details come from Open Library, whose page count is a median across every edition — so it often doesn't match the copy in your hands. Open the book, tap edit, and type the real total. The progress slider follows whatever you set.
I deleted a book. Did I lose its words?
No. Deleting a book removes it from your library and leaves every word you captured from it in your bank, just no longer filed under a title. Words are only ever removed when you remove them yourself.
Where is my data, and how do I get it out?
On your iPhone, and nowhere else — Moonlight has no account and no server. You can export your whole word bank as a CSV from Profile → Export, and send it wherever you like.
How do I delete everything?
Delete the app. Everything Moonlight stores lives inside the app, so removing it removes the lot. There is no account to close and nothing of yours held anywhere else.
Requirements
- Device
- iPhone. Portrait only.
- System
- iOS 26 or later.
- Network
- Not needed. Lookups, capture and review all work offline; a connection is only used to find a book's cover and page count.
- Permissions
- Microphone and Speech Recognition for voice capture; Camera or Photos for capturing words off a page. Each is asked for only when you first use that feature, and declining one leaves the rest working.
Privacy
Moonlight collects nothing and sends nothing about you anywhere. The full policy is on the privacy page.