CorpusKit Reader
Open a .corpus and ask it anything — private, semantic search with on-device answers.
CorpusKit Reader comes with a few sample corpora built in. For more, Browse Catalog for free corpora to download, Import a .corpus from Files or iCloud Drive, or make your own with CorpusKit Studio.
Tap a corpus in your library to load it. Loading happens once, on your device.
In Chat, type a question in plain language. The Reader finds the passages that actually answer it — by meaning, not just keywords. On devices with Apple Intelligence, it also writes a short answer grounded only in those passages. Every answer shows its sources so you can check them.
Switch to Read to browse the source by chapter, or tap through from any answer to the exact passage in the text.
Bookmark passages to keep them in Saved, and jump back to any of them in the text with Read in Context.
.corpus with your own tools, then open it in the Reader. There's no account and no tracking.