Comparison

PDF Book Reader vs Doc

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

Head to head
About

PDF Book Reader

Easily read, manage, and annotate PDF books and documents. This app offers a smooth reading experience, powerful annotation tools, and seamless cloud integration. Organize, search, and share your PDFs with ease.

Highlights
  • Natural PDF reading and navigation
  • PDF bookmarking and annotation
  • Text search and OCR extraction
  • PDF merging and page rearrangement
  • Cloud storage integration (Google Drive, Dropbox, iCloud)
  • File import and export via cloud and Files app
  • PDF sharing and printing
Features
Read full description

PDF Book Reader app helps you easily and naturally read PDF books and documents. It works as smooth as reading web pages in web browsers. PDF Book Reader is the best app to read, manage and annotate PDF Books and it works beautifully on iOS 14. The most powerful PDF Book reader, carefully designed and optimized specially for the iPhone & iPad. [ KEY FEATURES ] • Naturally read and navigate PDF books • Bookmark PDF e-Books • Annotate PDF e-Books • Search texts in entire PDF files • Extract texts by using OCR • Merge PDF files • Rearrange PDF pages by drag & drop • Connect with Google Drive, Dropbox, iCloud, Photos • Import files from Files, Photos, Google Drive, Dropbox • Automatically and securely save PDF files in Files app • Share PDF files via email, text (sms), cloud solutions • Print PDF files [ Upgrade to subscription version ] Upgrading to subscription version requires auto-renewal subscription. Payment will be charged to your Apple ID account at the confirmation of purchase. The subscription automatically renews unless it is canceled at least 24 hours before the end of the current period. Your account will be charged for renewal within 24 hours prior to the end of the current period. You can manage and cancel your subscriptions by going to your App Store account settings after purchase. Links to Your Privacy Policy and Terms of Use: http://www.btoj.com.au/privacy.html http://www.btoj.com.au/terms.html Please feel free to contact us for anything.

About

Doc

Features
Read full description

Doc-U-Aide from Saince is a leader in clinical documentation improvement (CDI). Doc-U-Aide App is a tool that enables physicians to view and respond to physician queries sent to them by clinical documentation improvement specialists and coders in both inpatient and outpatient / ambulatory settings. Doc-U-Aide App removes the complexity and frustration in query response workflow for busy physicians and helps reduce physician burnout. Doc-U-Aide helps physicians improve their clinical documentation integrity, increase quality scores and protect reimbursements. Doc-U-Aide is a secure, HIPAA compliant query response tool that works in conjunction with Doc-U-Aide CDI solution.

Screenshots

PDF Book Reader4 screens
Doc4 screens

Verdict

The call

The clearest difference is in-app purchases: Doc at none against PDF Book Reader's 2. Doc also leads on ads (none vs shown). PDF Book Reader's advantage is update cadence (every 5 days vs every 3 months). On price, device support and iOS requirement 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

Both are free to download. PDF Book Reader sells 2 in-app purchases, starting at $3.99 per month. Doc asks for nothing beyond the download.

UpkeepUpdate frequency

PDF Book Reader ships an update every 5 days, Doc every 3 months. The most recent releases landed on October 15, 2026 and October 10, 2026 respectively.

Scorecard3 real differences · 7 level
PDF Book Reader versus Doc: the parameters behind the verdict, then further details
ParameterPDF Book ReaderDoc
PriceFreeFree
Rating3.9 (32 ratings) — better—
Positive reviews63.2% of reviews—
Number of ratings32 — better—
Update frequencyEvery 5 days — betterEvery 3 months
AdsYesNo — better
In-app purchasesYesNo — better
MonetizationFree with in-app purchases—
DevicesiPhone, iPad, iPodiPhone, iPad, iPod
Requires iOS13.013.0
Further details — not scored
Size46 MB31 MB
Age rating4+4+
DeveloperB TO J PTY LTDSaince

In-app purchases

2 purchases

PDF Book Reader

Subscriptions2
  • 1 Month Subscription$3.991 Month
  • 1 Year Subscription$28.991 Year
None

Doc

No in-app purchases

Questions

Is PDF Book Reader free?
PDF Book Reader is free to download, with in-app purchases available.
Is Doc free?
Doc is free to download, with no in-app purchases.
Do PDF Book Reader or Doc have ads?
PDF Book Reader shows ads; Doc does not.
Which is updated more often, PDF Book Reader or Doc?
PDF Book Reader ships an update every 5 days, and Doc every 3 months. Most recently, PDF Book Reader was updated on October 15, 2026 and Doc on October 10, 2026.

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