Folucent

Folucent is a quiet place to read PDFs and keep what you learn.

READ WITH THE SOURCE CLOSE
Import PDFs from Files, pick up where you left off, search passages, and keep bookmarks. Choose a grid or list library. Use two-page reading when space allows and keyboard shortcuts with a connected keyboard.

WORK WITH SCANNED PAGES
Recognize text in page images, review the result, and use it in learning tools. Recognized page text is saved locally and can be found through search. The PDF keeps its original page layout.

UNDERSTAND A PASSAGE
Open Understand to explain a selected passage or the current text page. Keep the source collapsed while reading the explanation, expand it when needed, or choose Translate. After an explanation, use Ask about this passage to clarify a specific point. Choose Apple's on-device AI, Apple Private Cloud Compute, or your own OpenAI-compatible service. Custom services require an HTTPS address, model ID, API key and explicit permission to send text to that endpoint. The key stays in this device's Keychain; service availability, privacy and charges depend on the provider. Services never switch automatically. The included guide also offers clearly labelled built-in study examples. Learning actions use selected passages, not an entire book.

KEEP YOUR OWN UNDERSTANDING
Write what an idea means to you, save a study note, and return to its source page. Search across PDF text, recognized text, highlights, and notes. Revisit notes through the review queue.

FOLUCENT PRO — ONE-TIME PURCHASE
Optional Pro adds on-device whole-PDF translation with page-by-page progress and source comparison, cross-book study collections, PDF and Markdown study guides, saved guide templates, PDF reading aloud with sentence and paragraph controls, and a gold icon. Listen in the background on iPhone and iPad. iPhone/iPad can change the Home Screen icon; Mac customizes the running Dock icon only. Reading, annotations, OCR, notes, AI settings and standard exports remain free. …