Comparison

PDF Editor vs PDF Pro AI Editor

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

Head to head
About

PDF Editor

This app is a comprehensive PDF toolkit for viewing, editing, signing, and annotating documents on your mobile device. It allows you to scan paper documents into PDFs, fill out forms, and add digital signatures. Work with your PDFs offline and sync with cloud storage services.

Highlights
  • Edit text, images, and pages
  • Scan documents to PDF
  • Digital e-signatures
  • Fill PDF forms
  • Annotate and highlight
  • Draw and markup
  • Offline functionality
Features
Read full description

PDF4 Editor – All-in-One PDF Editor, Scanner & Form Filler Edit, Sign, Scan & Annotate PDFs — Anytime, Anywhere. PDF4 Editor is your ultimate PDF toolkit designed for productivity on the go. Whether you're working, studying, or managing documents, PDF4 Editor makes it easy to view, edit, sign, and share your PDFs right from your iPhone or iPad. Key Features: PDF Editor Edit text, images, and pages in your PDF with ease. Rearrange, rotate, or delete pages in seconds. PDF Scanner Turn your paper documents into high-quality PDFs using your device camera. Auto-detects edges and enhances clarity. E-Signature Sign documents digitally with your finger or stylus. Request signatures or fill out contracts with ease. Form Fill Easily fill out PDF forms, including interactive fields and checkboxes. Say goodbye to printing! Annotate & Highlight Add comments, highlight text, underline, or strikethrough. Perfect for study notes or document reviews. Draw & Markup Draw freely on PDFs for creative markups, diagrams, or handwritten notes. Stamp Tool Add custom or pre-designed stamps like “Approved”, “Confidential”, and more. Why PDF4 Editor? Fast, lightweight & user-friendly Works offline – no internet required Keeps your files private and secure Compatible with iCloud, Dropbox, Google Drive & more "By using this app, you agree to Apple’s Standard End User License Agreement (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/

About

PDF Pro AI Editor

Features
Read full description

PDF Pro AI gives you 28 practical PDF tools in a private, iOS-native workspace. Open a document from Files, Mail, Safari, or another app, make the changes you need, and save a new copy while the original stays unchanged. EDIT AND REVIEW • Read, search, print, share, and listen to PDFs • Fill compatible AcroForm fields • Add text, signatures, highlights, opaque covers, stamps, and watermarks • Move, resize, edit, or delete app-created document blocks • Ask questions about extractable PDF text on device CREATE AND ORGANIZE • Scan paper documents with Apple's document scanner • Turn selected photos into a PDF • Merge PDFs and extract, rotate, delete, reorder, or number pages • Export rendered pages as PNG images CONVERT AND ENHANCE • Export extractable text as a Word-compatible RTF document • Recognize page text on device and export it as TXT • Enhance scanned pages into a clearer grayscale PDF copy COMPRESS AND PROTECT • Compress one PDF or a batch of PDFs into measured new copies • Choose high-quality, balanced, or small-file output • Protect a compatible PDF copy with a new password • Unlock a compatible PDF using its known password PRIVATE DOCUMENT ASSISTANT Ask questions or summarize extractable PDF text without uploading the document. Eligible devices can use Apple's on-device language model. Other supported devices use a clearly labeled local extractive result with source excerpts. BUILT FOR YOUR CONTROL • No account • No subscription or feature paywall • No advertising or tracking • No app-initiated document upload • Files, camera, photos, printing, and sharing are used only when you choose them Compatibility varies for malformed PDFs, XFA or JavaScript forms, certificate signatures, uncommon encryption, image-only search, and third-party PDF features. Word-compatible export contains extractable text rather than recreating the original layout. OCR and assistant results should be checked before relying on important details.

Screenshots

PDF Editor4 screens
PDF Pro AI Editor4 screens

Verdict

The call

The clearest difference is in-app purchases: PDF Pro AI Editor at none against PDF Editor's 3. PDF Pro AI Editor also leads on update cadence (daily vs weekly). PDF Editor's advantage is ads (none vs shown) and iOS requirement (13.0 vs 17.0). On price 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

Both are free to download. PDF Editor sells 3 in-app purchases, starting at $0.99 per 7 days. PDF Pro AI Editor asks for nothing beyond the download.

UpkeepUpdate frequency

PDF Editor ships an update weekly, PDF Pro AI Editor daily. The most recent releases landed on September 21, 2026 and September 15, 2026 respectively.

Scorecard4 real differences · 5 level
PDF Editor versus PDF Pro AI Editor: the parameters behind the verdict, then further details
ParameterPDF EditorPDF Pro AI Editor
PriceFreeFree
Rating5.0 (1 ratings) — better—
Number of ratings1 — better—
Update frequencyWeeklyDaily — better
AdsNo — betterYes
In-app purchasesYesNo — better
MonetizationFree with in-app purchases—
DevicesiPhone, iPad, iPod — betteriPhone, iPad
Requires iOS13.0 — better17.0
Further details — not scored
Size132 MB2 MB
Age rating4+4+
DeveloperMobotechnology LLCMathArena

In-app purchases

3 purchases

PDF Editor

Subscriptions3
  • Less than a cup of coffee$0.997 Days
  • Get Best Offer$2.991 Month
  • Get more for your money$19.991 Year
None

PDF Pro AI Editor

No in-app purchases

Questions

Is PDF Editor free?
PDF Editor is free to download, with in-app purchases available.
Is PDF Pro AI Editor free?
PDF Pro AI Editor is free to download, with no in-app purchases.
Do PDF Editor or PDF Pro AI Editor have ads?
PDF Pro AI Editor shows ads; PDF Editor does not.
Which is updated more often, PDF Editor or PDF Pro AI Editor?
PDF Editor ships an update weekly, and PDF Pro AI Editor daily. Most recently, PDF Editor was updated on September 21, 2026 and PDF Pro AI Editor on September 15, 2026.

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