Comparison

ezPDF Reader vs HLL Pdf Reader

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

Head to head
About

ezPDF Reader

This app allows users to view and interact with PDF documents, including multimedia playback and form filling. It offers robust annotation tools compatible with Adobe Acrobat and supports text reflow for comfortable reading on mobile devices.

Highlights
  • Multimedia PDF playback (audio & video)
  • Interactive PDF form filling
  • Comprehensive annotation tools
  • Text reflow and customizable viewing
  • Text-to-Speech (TTS) functionality
  • Password-protected PDF support
Features
Read full description

ezPDF Reader is the world's first and only PDF viewer with the embedded multimedia (audio & video) playing capability. Easy annotations and PDF form-filling features are widely used. For iPad Users, please download the iPad version in AppStore. https://itunes.apple.com/us/app/ezpdf-reader-pdf-reader-annotator/id407445075?mt=8 For the business use of this advanced technology, content developments or interactive eBook productions, please contact us for our SDK library / API at info@unidocs.com ● High-Quality Text-to-Speech (TTS) Features - TTS Feature is added with In-App Purchase option. Supporting English, Chinese, Japanese & Korean. - Please turn off the silent mode to hear from the speaker. ● Multimedia PDF Viewer - Audio and Video ezPDF Reader is designed specifically for PDF documents and contents, but also able to play multimedia files embedded into PDF. (Multimedia file format must be compatible to your iOS device) It is the perfect solution for PDF based audio/video-enabled eBooks. ● PDF Form Filler If the PDF file is designed with the PDF-form features, you can simply type in the form field and apply marks on buttons. Import data and export data. Fill out your form, sign, flatten, and then send via email. ● Annotation Features on PDF The useful tool to add text in text box and sticky notes; highlight, underline, or cross out texts; draw lines, arrows, rectangles, ovals, free text, image and freehand drawings. Add memo, change color/thickness, resize and move them around as you like. All these comments are compatible with Adobe® Acrobat®. (PC or Mac version) - Show, import, export and email annotation list - Flatten annotations - show and hide annotation toolbar * Important - In order to use annotations and PDF Form features, you need to change the Viewing mode to "Slow/More" from the settings. ● Customized Viewing Documents appear as they would be on your PC, but customized to fit your mobile device's screen. Scanned and text based PDFs are all supported, including JPEG2000 and JBIG2 compression. (Must set PDF viewing option as Slow/More from Settings) Select Text Reflow, Fit to Text Column, Copy and Paste text in PDF view and bookmark as you go. PDF Form to fill in, check buttons, and choose from a list. Play embedded multimedia files of audio and video files (Must be iOS compatible) Annotation features - Apply highlight, underline or cross-over for the selected text. Add Sticky Note, Oval, Rectangle, Line, Free Text, Image. Embedded hyperlinks are live (Go To Page and URLs) Smart zooming by double-tapping to fit block width Pinch and Double Tap - Zoom IN/Out Text Selection or Markup Annotation and then Copy, Web Search, or send to Email Thumbnail Image View Text reflow with font size, color & font style (bold & italic) Night reading mode supported for PDF view, Text Reflow Text search and highlighted result Open standard password-protected PDF files Jump to a specific page by its page number Outlines Bookmarks Landscape view Annotations list/reply view Annotations import/export/email Page scroll vertical/horizontal Page read direction from left to right/from right to left Page Crop Page Slide Show PDF File Attachment ● Support for other file formats Supports Microsoft Office, Audio (mp3, wav, aac, aa, aiff), Video (mp4, mov, mpv, 3gp), Images, Zipped Images, Text and HTML, Annotations XML files ● Functions for File Management File List View Sorting by Name/ Date/ File Size File Search by File Name List of the Recently-Viewed PDF Files Various File Transfer to Device – USB Transfer via iTunes, WiFi Connection, URL Link, Download Interaction with clouding services - G-Docs, Dropbox Convenient File Management - Folder Creation/Copy/Cut/Paste/Delete/Rename twitter.com/ezpdf facebook.com/ezpdf

About

HLL Pdf Reader

This app offers a streamlined PDF reading experience with an iBooks-inspired interface. It provides features like recent reading history, page cropping for larger content views, and an outline for easy navigation. Zooming is simplified with double-tap gestures.

Highlights
  • iBooks-like design
  • Reading history
  • Page cropping
  • Document outline
  • Double-tap zoom
  • Automatic fit on rotation
Features
Read full description

Universal app - Support for iPhone / iPad iBooks-like design - Support your reading experience with simple User Interface. Recently read books - Show your reading histories. Therefore you can find books that you read recently. Cropping - Crop page merging to show contents bigger automatically. Outline - Show current document structure so that you can see your position and move around easily. No more pinch in/out. - Zoom in/out with double tap. - Fit document to device size automatically when rotating.

Screenshots

ezPDF Reader4 screens
HLL Pdf Reader1 screens

Verdict

The call

The clearest difference is price: HLL Pdf Reader at Free against ezPDF Reader's $1.99. HLL Pdf Reader also leads on rating (5.0 vs 1.3) and in-app purchases (none vs 4). ezPDF Reader's advantage is update cadence (every 2 weeks vs every 9 months) and ratings volume (29 vs 1). On ads and device support 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

CostPrice · In-app purchases · Ads · Monetization

HLL Pdf Reader is free to download; ezPDF Reader costs $1.99 up front. ezPDF Reader sells 4 one-off in-app purchases. HLL Pdf Reader asks for nothing beyond the download.

ReceptionRating · Positive reviews · Number of ratings

HLL Pdf Reader holds the better App Store score, 5.0 against 1.3. That said, the two scores are not equally well evidenced: ezPDF Reader has 29 ratings behind it against 1, so its average is the more settled of the two.

UpkeepUpdate frequency

ezPDF Reader ships an update every 2 weeks, HLL Pdf Reader every 9 months. The most recent releases landed on October 12, 2026 and October 2, 2026 respectively.

Scorecard7 real differences · 3 level
ezPDF Reader versus HLL Pdf Reader: the parameters behind the verdict, then further details
ParameterezPDF ReaderHLL Pdf Reader
Price$1.99Free — better
Rating1.3 (29 ratings)5.0 (1 ratings) — better
Positive reviews20.7% of reviews—
Number of ratings29 — better1
Update frequencyEvery 2 weeks — betterEvery 9 months
AdsNoNo
In-app purchasesYesNo — better
MonetizationFree with in-app purchasesFree — better
DevicesiPhone, iPodiPhone, iPad, iPod — better
Requires iOS8.0 — better15.0
Further details — not scored
Size534 MB15 MB
Age rating4+4+
DeveloperUnidocs Inc.hades lade lam

Customer experience

ezPDF Reader

All ratings29 ratings
Positive3.4%
Neutral6.9%
Negative89.7%
Written reviews193 reviews
Positive20.7%
Neutral7.3%
Negative72.0%

HLL Pdf Reader

All ratings1 ratings
Positive100.0%
Neutral0.0%
Negative0.0%

Bugs and requests

ezPDF Reader

Reported bugs

31 issues
  • App crashes on launch
  • App crashes when rotating to landscape mode
  • TTS feature not working after purchase
  • Cannot download purchased features
  • Files disappear or are not saved
Show 26 more
  • Cannot copy files
  • Dropbox/Google Drive integration fails
  • Audio playback issues
  • Interface language changes unexpectedly
  • In-app purchase verification failed
  • App closes when rotating device
  • Annotation toolbar not dismissible
  • Cannot delete pages
  • Annotations do not save
  • Bookmarks disappear or go to wrong pages
  • Cannot flatten forms
  • App does not recognize itself as a PDF reader in Safari
  • Embedded videos not playing
  • Cannot fill or save forms
  • UI is awkward and clunky
  • App size is excessively large
  • Text reflow issues
  • Night mode is missing
  • Cannot access night mode
  • Audio playback stops when turning pages
  • Pre-caching ability lacking
  • Cannot use pencil icon to save changes without crashing
  • Dialogue box for Dropbox login unavailable
  • Password cannot be filled in
  • Some buttons do not work
  • EZPDF files cannot be read

Requested features

19 requests
  • Update for iOS 10 compatibility
  • Improve UI/UX
  • Add WebDAV/FTP synchronization
  • Fix landscape mode crashes
  • Add floating audio player
Show 14 more
  • Add A-B repeat feature
  • Enable dictionary usage
  • Add snapshot, fax, SNS sending features
  • Allow direct file movement to folders
  • Add 'open in other app' functionality
  • Fix crop mode
  • Support for French voice
  • Fix bug with copying from inbox
  • Allow locking screen rotation
  • Improve TTS voice clarity
  • Allow TTS to speak single words
  • Add night mode (was present, then removed)
  • Improve form filling functionality
  • Support for Unicode text reflow

HLL Pdf Reader

Not enough reviews yet to summarise bugs or requests.

In-app purchases

4 purchases

ezPDF Reader

One-time4
  • TTS Korean HCILAB: Yujin$2.99
  • TTS Japanese HCILAB: Naomi$2.99
  • TTS English HCILAB: Sarah$2.99
Show 1 more
  • TTS Chinese HCILAB: Xiaoling$2.99
None

HLL Pdf Reader

No in-app purchases

Questions

Is ezPDF Reader free?
ezPDF Reader costs $1.99, and also offers in-app purchases.
Is HLL Pdf Reader free?
HLL Pdf Reader is free to download, with no in-app purchases.
Which has better reviews, ezPDF Reader or HLL Pdf Reader?
HLL Pdf Reader is rated higher. ezPDF Reader averages 1.3 out of 5 from 29 ratings, while HLL Pdf Reader averages 5.0 from 1 ratings.
Do ezPDF Reader or HLL Pdf Reader have ads?
Neither ezPDF Reader nor HLL Pdf Reader shows ads.
Which is updated more often, ezPDF Reader or HLL Pdf Reader?
ezPDF Reader ships an update every 2 weeks, and HLL Pdf Reader every 9 months. Most recently, ezPDF Reader was updated on October 12, 2026 and HLL Pdf Reader on October 2, 2026.

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