Comparison

Lectio PDF Reader & Bookshelf vs Lucid Reader

Price, ratings, monetisation and update history for both apps, side by side โ€” with what reviewers say about each.

Head to head
About

Lectio PDF Reader & Bookshelf

Features
Read full description

A PDF bookshelf for iPhone and iPad. Bring in PDFs from iCloud Drive, Google Drive, OneDrive, Dropbox or the Files app, and read them like books in two-page spreads. Made for you if โ€ข You want to read scanned books and comics on iPhone or iPad the way you read paper books โ€ข Your PDFs are spread across cloud services and you want them on one shelf โ€ข You read right-to-left books and want the spreads in the right order โ€ข You need to get back to that one page of a paper or document quickly Collect: put every PDF on one shelf From "Add PDF", bring in PDFs from any place that appears in the Files app, such as iCloud Drive, Google Drive, OneDrive and Dropbox. You can also add files by choosing them in the Files app, opening Lectio from the share sheet in another app, or dragging and dropping them. Install a document app such as Google Drive, and you can bring in its files through the Files app. The same PDF is never added twice, and password-protected PDFs can be added too. Books are kept on your device, so you can read them without a connection. Lectio only reads your cloud files and never changes or deletes them. Read: turn pages like a book Each book remembers two-page or single-page view, and left or right binding. Right-bound books lay out their spreads from right to left. Swipe or press the arrow keys to turn the page, and tap the page to hide the buttons. Lectio remembers where you stopped, so the next time you open a book you carry on from there. Find: contents, thumbnails and text search Jump to a chapter from the table of contents, or to any page from the thumbnail grid. Search the text of a book and each match is highlighted in yellow. In the library, find books by name. Organize: favorites, bookmarks and collections See your favorite books and bookmarked pages in lists. A bookmark keeps the opening words of its page, so you know where you left it. Sort books into collections of your own, and rename books as you like. Deleted books stay in Recently Deleted for 30 days, where you can bring them back. iPhone, iPad and iPhone Duo Lectio supports iPhone Duo. Read on the outer display when it is closed, and on the large inner display when you open it. The buttons sit in the vertical bar along the edge, out of the way of the page. Keyboard, remotes and VoiceOver Press โŒ˜F to search, โŒ˜B to bookmark and โŒ˜W to close. Pages turn with the arrow keys, so a Bluetooth keyboard or a page-turner remote that sends arrow keys works too. VoiceOver and Dark Mode are supported. You can also share and print your books. Start by tapping + in the library to add your first PDF.

About

Lucid Reader

Features
Read full description

Lucid Reader โ€” A Streamlined PDF Viewer for Focused Reading Lucid Reader gives you a clean, distraction-free way to read PDFs โ€” whether they're standard documents or books you've scanned yourself. No clutter, no complexity. Just your PDF and you. *** Key Features *** โ€ข Two-Page Spread โ€” Read like a real book, with an optional standalone cover page. โ€ข Flexible Binding โ€” Switch between right-to-left or left-to-right binding, perfect for Japanese-style books and manga. โ€ข Optimized Display โ€” Fine-tune the display area and zoom independently for the left and right pages to maximize space and trim away margins. โ€ข Intuitive Page Navigation โ€” Turn pages effortlessly with a tap or a swipe, with customizable tap zones. โ€ข Page Lock โ€” Keep your view exactly where you set it and prevent accidental shifts. โ€ข Full-Screen Mode โ€” Fully immerse yourself with a distraction-free view. โ€ข Collections โ€” Group multiple files together for tidy, organized reading. โ€ข iCloud Storage โ€” Offload files to iCloud to reclaim space on your device. *** Effortless File Access *** Open PDFs in seconds: โ€ข Tap the + icon in the top-right corner of the file list, or โ€ข Choose "Save to Lucid Reader" from the share menu in any other app. *** Secret Mode โ€” Enhanced Privacy (In-App Purchase) *** โ€ข Create more collections โ€ข Protect your sensitive files with advanced privacy tools: โ€ข File Hiding โ€” Swipe right on any file and tap Secret to hide it from the list. โ€ข Restricted Access โ€” Hidden files stay concealed until you unlock them with Face ID / Touch ID, keeping them private even if someone glances at your screen. โ€ข App Switcher Privacy โ€” Secret-mode PDFs are blurred when switching apps, so your private content stays hidden even on the multitasking screen. โ€ข End-to-End Encryption โ€” 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 โ€” hassle-free PDF reading.

Screenshots

Lectio PDF Reader & Bookshelf4 screens
Lucid Reader3 screens

Verdict

The call

The clearest difference is in-app purchases: Lectio PDF Reader & Bookshelf at none against Lucid Reader's 1. Lucid Reader's advantage is iOS requirement (17.0 vs 27.0). On price, update cadence, ads and device support there is nothing between them.

Scored on Price ยท Rating ยท Positive reviews ยท Number of ratings ยท Update frequency ยท Ads ยท In-app purchases ยท Monetization ยท Best chart rank ยท Devices ยท Requires iOS

CostPrice ยท In-app purchases ยท Ads ยท Monetization

Both are free to download. Lucid Reader sells 1 one-off in-app purchase. Lectio PDF Reader & Bookshelf asks for nothing beyond the download.

UpkeepUpdate frequency

Lectio PDF Reader & Bookshelf ships an update every 6 weeks, Lucid Reader every 3 weeks. Both last shipped on October 12, 2026.

Scorecard2 real differences ยท 4 level
Lectio PDF Reader & Bookshelf versus Lucid Reader: the parameters behind the verdict, then further details
ParameterLectio PDF Reader & BookshelfLucid Reader
PriceFreeFree
Update frequencyEvery 6 weeksEvery 3 weeks โ€” better
AdsNoNo
In-app purchasesNo โ€” betterYes
DevicesiPhone, iPadiPhone, iPad
Requires iOS27.017.0 โ€” better
Further details โ€” not scored
Size31 MB7 MB
Age rating4+4+
Developercaps-rockSatoshi Takezawa

In-app purchases

None

Lectio PDF Reader & Bookshelf

No in-app purchases

1 purchases

Lucid Reader

One-time1
  • Pro Mode$0.99

Questions

Is Lectio PDF Reader & Bookshelf free?
Lectio PDF Reader & Bookshelf is free to download, with no in-app purchases.
Is Lucid Reader free?
Lucid Reader is free to download, with in-app purchases available.
Do Lectio PDF Reader & Bookshelf or Lucid Reader have ads?
Neither Lectio PDF Reader & Bookshelf nor Lucid Reader shows ads.
Which is updated more often, Lectio PDF Reader & Bookshelf or Lucid Reader?
Lectio PDF Reader & Bookshelf ships an update every 6 weeks, and Lucid Reader every 3 weeks. Most recently, Lectio PDF Reader & Bookshelf was updated on October 12, 2026 and Lucid Reader on October 12, 2026.

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