Lucid Reader vs Inspan Book Reader
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Lucid Reader
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Lucid Reader — A Streamlined PDF Viewer for Focused Reading Lucid Reader gives you a clean, distraction-free way to read PDFs — whether they're standard documents or books you've scanned yourself. No clutter, no complexity. Just your PDF and you. *** Key Features *** • Two-Page Spread — Read like a real book, with an optional standalone cover page. • Flexible Binding — Switch between right-to-left or left-to-right binding, perfect for Japanese-style books and manga. • Optimized Display — Fine-tune the display area and zoom independently for the left and right pages to maximize space and trim away margins. • Intuitive Page Navigation — Turn pages effortlessly with a tap or a swipe, with customizable tap zones. • Page Lock — Keep your view exactly where you set it and prevent accidental shifts. • Full-Screen Mode — Fully immerse yourself with a distraction-free view. • Collections — Group multiple files together for tidy, organized reading. • iCloud Storage — Offload files to iCloud to reclaim space on your device. *** Effortless File Access *** Open PDFs in seconds: • Tap the + icon in the top-right corner of the file list, or • Choose "Save to Lucid Reader" from the share menu in any other app. *** Secret Mode — Enhanced Privacy (In-App Purchase) *** • Create more collections • Protect your sensitive files with advanced privacy tools: • File Hiding — Swipe right on any file and tap Secret to hide it from the list. • Restricted Access — Hidden files stay concealed until you unlock them with Face ID / Touch ID, keeping them private even if someone glances at your screen. • App Switcher Privacy — Secret-mode PDFs are blurred when switching apps, so your private content stays hidden even on the multitasking screen. • End-to-End Encryption — Encrypt secret files with a password directly on your device. Your files remain unreadable without your password, even if your iCloud storage is accessed. Experience the perfect balance of simplicity and control. Lucid Reader is built for one thing — hassle-free PDF reading.
Inspan Book Reader
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Make your books feel at home on every screen. Inspan Book Reader brings EPUB, FB2 and TXT files into a focused library with comfortable, customizable reading. Add books from your device, files shared from other apps, supported ZIP archives, Dropbox or OPDS catalogs. Once a book is imported, you can keep reading it offline. No account is required for local files. READ YOUR BOOKS • Open EPUB, FB2 and plain-text TXT books. • Import supported books from ZIP archives. • Browse chapters and jump straight to the part you need. • Return to your saved reading position. • Add bookmarks with short excerpts for quick navigation. • Choose page curl, slide or no page-turn animation. ORGANIZE YOUR LIBRARY • See book covers, titles, authors and reading progress in one place. • Search your library by title or author. • Mark favorites for easy access. • Share a book file or remove it from the library. MAKE EVERY PAGE YOURS • Switch between light and dark interface themes. • Use light, dark or fully custom reading colors. • Pick a font and adjust font size, line spacing and paragraph spacing. • Set left and right margins, text alignment and automatic hyphenation. • Show or hide page numbers. FIND AND IMPORT BOOKS Add OPDS catalogs and browse their sections inside the app. A Project Gutenberg catalog is ready to explore, and you can add other compatible catalogs. Connect Dropbox with read-only file access to browse folders and import supported books. Network access is only needed for online catalogs and Dropbox. Inspan Book Reader is designed for a calm reading experience, whether you read a short story on your phone or settle into a novel on a larger screen.
Screenshots
Verdict
The clearest difference is in-app purchases: Inspan Book Reader at none against Lucid Reader's 1. Inspan Book Reader also leads on update cadence (every 2 days vs every 3 weeks) and device support (4 vs 2). On price and ads there is nothing between them.
Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS
Both are free to download. Lucid Reader sells 1 one-off in-app purchase. Inspan Book Reader asks for nothing beyond the download.
Lucid Reader ships an update every 3 weeks, Inspan Book Reader every 2 days. The most recent releases landed on October 12, 2026 and October 14, 2026 respectively.
| Parameter | Lucid Reader | Inspan Book Reader |
|---|---|---|
| Price | Free | Free |
| Update frequency | Every 3 weeks | Every 2 days — better |
| Ads | No | No |
| In-app purchases | Yes | No — better |
| Devices | iPhone, iPad | iPhone, iPad, iPod, Mac — better |
| Requires iOS | 17.0 | 15.0 — better |
| Further details — not scored | ||
| Size | 7 MB | 35 MB |
| Age rating | 4+ | 4+ |
| Developer | Satoshi Takezawa | Nikolay Vorobyev |
In-app purchases
Lucid Reader
- Pro Mode$0.99
Inspan Book Reader
No in-app purchases
Questions
Is Lucid Reader free?
Is Inspan Book Reader free?
Do Lucid Reader or Inspan Book Reader have ads?
Which is updated more often, Lucid Reader or Inspan Book Reader?
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