# Folucent — PDF Reading, Study & Notes > PDF reader and study tool with AI explanation and note-taking. (iPhone/iPad app by 峰 朱.) - Source: https://appshunter.io/ios/app/folucent/id6818737993 (this page in markdown: same URL + `.md`) - Developer: [峰 朱](https://appshunter.io/developer/1111654148) - Category: Education, Productivity - Price: Free - Rating: 5.00/5 from 1 App Store ratings - Age rating: 4+ - Requires: iOS 27.0 · 13 MB - Languages: American English, European Spanish, Korean, German (Germany), Chinese (Traditional, Taiwan), Chinese (Simplified, China), French (France), Japanese - Released: 2026-10-15 - Data updated: 2026-10-31 - Monetization: free ## What is 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. MAKE THE SPACE YOURS Start with a neutral interface or choose an optional color theme. Use light or dark appearance and larger text. On iPad, add handwriting to pages. No account is required. Your library and notes are stored locally. Apple AI requires compatible hardware and supported system settings; PCC and custom services require network access. Unsupported or unconfigured AI actions are hidden while reading and notes remain available. App-level CloudKit sync is not configured. The interface supports English, Simplified Chinese, Traditional Chinese, Japanese, Korean, French, German and Spanish. Answer and translation languages can be chosen independently from the same eight options; support depends on the selected model. AI output requires comparison with the source. ## Key features - PDF import and reading - OCR for scanned pages - AI passage explanation and translation - Note-taking and review queue - Search across text and notes - Customizable interface ## Is Folucent safe? Not enough ratings yet to assess Folucent. ## Is Folucent legit? Folucent appears legitimate, with a few gaps. The AppsHunter Legitimacy Score for Folucent is 75 out of 100 points across 7 verification signals from App Store and developer data. ## Frequently asked questions about Folucent ### What is Folucent? Folucent is a free application designed for reading PDFs, taking notes, and understanding content through AI-powered explanations and translations. It offers features like OCR for scanned pages and a review queue for notes. ### How does Folucent use AI? Folucent integrates with Apple's on-device AI, Private Cloud Compute, or custom OpenAI-compatible services to explain selected passages or entire pages. Users can also use it for translation, with AI output requiring comparison to the source. ### Can I use Folucent offline? Yes, Folucent stores your library and notes locally, and no account is required. However, AI actions that rely on cloud services or custom endpoints will require network access. ### What devices support Folucent? Folucent is available on Mac, iPhone, and iPad, supporting a range of iOS and macOS versions. Handwriting annotation is available on iPad. ### Is Folucent suitable for younger users? Folucent has an age rating of 4+, making it accessible for a broad audience. Its focus on reading and understanding educational content is beneficial for learners of all ages. ### How often is Folucent updated? The latest version, 1.3.0, was released on October 25, 2026, indicating active development. Users can expect ongoing improvements and feature additions. ### Does Folucent have ads? No, Folucent does not contain advertisements. It is a completely ad-free application, allowing for an uninterrupted study experience. ### What languages does Folucent support? The interface supports English, Simplified Chinese, Traditional Chinese, Japanese, Korean, French, German, and Spanish. Answer and translation languages can be chosen independently from these options, depending on the selected AI model. ## Version history (last 4 releases) ### 1.3.0 — 2026-10-25 Use your own OpenAI-compatible AI service with an HTTPS endpoint, model ID and device-local API key. AI generation actions stay hidden when the selected model is unsupported or unconfigured, while reading, notes and existing results remain available. Saved explanations and translations retain their service and model information. Services never switch automatically. ### 1.2.0 — 2026-10-22 Use Folucent in English, Simplified Chinese, Traditional Chinese, Japanese, Korean, French, German or Spanish. Choose separate answer and translation languages from the same eight options, with support checked for your selected Apple AI model. Existing language choices are preserved. Improved handling of unusable model output. Explanations stay focused on the selected passage and better preserve stated facts and genuine uncertainty. ### 1.1.0 — 2026-10-21 Read, find, and revisit your PDFs with less friction. • Recognize text in scanned pages and keep it available for search. • Search across PDF text, recognized text, highlights, and study notes in your library. • A cleaner bookshelf with fewer repeated titles, in grid and list views. • Revisit saved notes in the review queue and return to their source pages. • Read longer translations in a dedicated view. • Improved reading position recovery, keyboard navigation, two-page reading, and larger-text layouts. • Understand starts with Explain, with Translate beside it and the source collapsed until needed. Ask about this passage appears after an explanation. • Mixed-size PDFs open with a centered page and keep a more consistent zoom between pages. • Look up a selected word with the system dictionary, including phonetic notation when available in your installed dictionaries. ### 1.0.0 — 2026-10-16 No release notes. ## More apps by 峰 朱 - [BSSID SCAN](https://appshunter.io/ios/app/bssid-scan/id1442586100) - [Remote Keyboard](https://appshunter.io/ios/app/remote-keyboard/id1474458879) - [ScriptWidget](https://appshunter.io/ios/app/scriptwidget/id1555600758) - [Chestnut for Bibliophile](https://appshunter.io/ios/app/chestnut-for-bibliophile/id6475627557) - [JSWidget](https://appshunter.io/ios/app/jswidget/id6737880623) - [Whimoria](https://appshunter.io/ios/app/whimoria/id6741513789) All apps by 峰 朱: https://appshunter.io/developer/1111654148 --- *Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-10-31.*