Comparison

PDFAuto vs Viewport

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

Head to head
About

PDFAuto

Features
Read full description

PDFAuto - Local PDF AI assistant Transform how you interact with PDFsβ€”100% locally on your device! PDFAuto uses advanced AI to analyze documents, answer questions, and unlock insights without uploading your files anywhere. Features: β€’ AI-powered PDF analysis & comprehension β€’ Real-time Q&A about your documents β€’ Local processing for privacy protection β€’ Support for all PDF formats From research papers to business reports, PDFAuto makes reading interactive. Download now and unlock intelligent document interaction!

About

Viewport

Features
Read full description

Your HTML documents deserve a proper reader. Viewport opens .html and .htm files from Files and iCloud Drive on iPhone and iPad. Read reports, reference pages, and interactive documents with their original inline styles and JavaScript. READ AND INTERACT β€’ Open HTML using the file picker or the system’s Open In menu. β€’ Keep interactive controls and responsive layouts in supported documents. β€’ Hide the reading controls while scrolling and bring them back with a tap. β€’ Search for text in the current document. KEEP USEFUL FILES CLOSE β€’ Return to recently opened documents. β€’ Keep a local reading copy of imported HTML. β€’ Try the bundled interactive sample without an account. EXPORT AND SHARE β€’ Create a PDF with the page as displayed. β€’ Export an A4 PDF using the document’s print layout. β€’ Share the original HTML through the system share sheet. Self-contained HTML works best. Separate companion files are not imported automatically. Documents that load remote resources need an internet connection for those resources. PDF exports are static and do not preserve interactive controls. No account, advertising, or analytics SDKs. The developer does not collect your documents or reading history through the app. HTML you open can contact external services defined by its content; those services have their own privacy practices.

Screenshots

PDFAuto3 screens
Viewport2 screens

Verdict

The call

PDFAuto and Viewport are too close to call on the numbers: across 5 compared parameters β€” price, ads, in-app purchases and device support among them β€” neither pulls far enough ahead to decide it. What separates them is feature set and interface, not measurable difference.

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

CostPrice Β· In-app purchases Β· Ads Β· Monetization

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

ScorecardNo meaningful differences
PDFAuto versus Viewport: the parameters behind the verdict, then further details
ParameterPDFAutoViewport
PriceFreeFree
AdsNoNo
In-app purchasesNoNo
DevicesiPhone, iPadiPhone, iPad
Requires iOS16.0 β€” better17.0
Further details β€” not scored
Size97 MB5 MB
Age rating4+17+
Developer敏锋 ι»„YU CHEN WANG

In-app purchases

None

PDFAuto

No in-app purchases

None

Viewport

No in-app purchases

Questions

Is PDFAuto free?
PDFAuto is free to download, with no in-app purchases.
Is Viewport free?
Viewport is free to download, with no in-app purchases.
Do PDFAuto or Viewport have ads?
Neither PDFAuto nor Viewport shows ads.

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