Best PDF Form Filler Apps

246+ iOS apps curated and reviewed

4.3 avg rating
16 free apps
Updated September 2026

Looking for free pdf form filler apps? 16 of our 246+ tracked titles are free to download — no subscription, no trial. The rest are premium picks worth paying for.

Compare top PDF Form Filler Apps (September 2026)

#AppPriceRatingAdsIn-App PurchasesUpdated
1Acrobat Reader: PDF EditorAcrobat Reader: PDF EditorFree4.6★ (651K)NoYesSep 2026
2Form Filler: fill & sign formsForm Filler: fill & sign formsFree4.6★ (32K)NoNoSep 2026
3pdfFiller: edit PDF documentspdfFiller: edit PDF documentsFree4.4★ (8.5K)NoYesSep 2026
4PDF Filler: Edit & SignPDF Filler: Edit & SignFree4.6★ (67)YesYesSep 2026
5PDF Form Filler: Fill and SignPDF Form Filler: Fill and SignFree4.9★ (9)NoYesAug 2026
6FormFill: Fill & Sign PDFFormFill: Fill & Sign PDFFree5.0★ (1)NoYesSep 2026
7Form ZapForm ZapFree5.0★ (4)NoNoMay 2026
8PDF Form Filler: Fill & SignPDF Form Filler: Fill & SignFreeNoYesAug 2026

Top Picks for PDF Form Filler

Acrobat Reader: PDF Editor#1

Acrobat Reader: PDF Editor by Adobe Inc.

Documents Converter & Signer
Editor's Choice
💼 Business
4.6😞(651K ratings)
FreeIn-App Purchases
#2in Business
Acrobat Reader: PDF Editor screenshot 1
Acrobat Reader: PDF Editor screenshot 2
Acrobat Reader: PDF Editor screenshot 3
Acrobat Reader: PDF Editor screenshot 4
Acrobat Reader: PDF Editor screenshot 5
Acrobat Reader: PDF Editor screenshot 6

This app is a powerful PDF tool for viewing, editing, annotating, and signing documents. It offers AI-powered features for summarizing and interacting with PDFs, along with robust conversion and security options. Collaborate on files and access your documents from anywhere.

What We Love

  • 🚀 Fast and efficient
  • 🔒 Secure document storage
  • 👍 Convenient for reading and annotating PDFs
  • 👍 Useful for students and professionals

Room to Improve

  • 🐛 Buggy and unreliable
  • 🔒 Overly intrusive login requirements
  • 💰 Expensive subscription model
  • 👎 Counterintuitive user interface changes
  • 🔍 Poor search and organization features
Form Filler: fill & sign forms#2

Form Filler: fill & sign forms by airSlate, Inc.

Create and Edit pdf documents
Strong Contender
📊 Productivity
4.6😐(32K ratings)
Free
Form Filler: fill & sign forms screenshot 1
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Form Filler: fill & sign forms screenshot 5

Easily fill and sign PDF documents using a provided link or QR code. This advanced application streamlines the online form-filling process, saving you time and helping you go paperless.

What We Love

  • 👍 User-friendly and easy to use
  • 🚀 Convenient and time-saving
  • 💡 Helpful for managing documents
  • 🚀 Simplifies form filling process

Room to Improve

  • 🐛 Glitchy and buggy performance
  • 👎 Poor navigation and UI design
  • 🔍 Difficulty entering information accurately
  • 📱 Not optimized for mobile devices
pdfFiller: edit PDF documents#3

pdfFiller: edit PDF documents by airSlate, Inc.

Scan, fill, sign,make pdf docs
Worth Considering
💼 Business
4.4😞(8.5K ratings)
FreeIn-App Purchases
#47in Business
pdfFiller: edit PDF documents screenshot 1
pdfFiller: edit PDF documents screenshot 2
pdfFiller: edit PDF documents screenshot 3
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pdfFiller: edit PDF documents screenshot 5
pdfFiller: edit PDF documents screenshot 6

This app transforms your device into a mobile office for managing PDF documents. Edit, eSign, and fill out forms, then share or export them. It offers secure storage and access to millions of templates, with offline capabilities.

What We Love

  • 👍 Easy to use
  • 🚀 Makes virtual work easy
  • 💡 Great customer service/support
  • 👍 Simple and organized
  • 👍 Helpful for PDF management

Room to Improve

  • 🐛 Buggy and glitchy
  • 💰 Expensive subscription
  • 🔒 Concerns about privacy and security
  • 🤥 Misleading/deceptive advertising
  • 🔒 Difficult to cancel subscription
  • 🐛 Issues with saving/exporting documents

More PDF Form Filler apps to explore

FAQ about PDF Form Filler

What are the best pdf form filler apps for iPhone?
Acrobat Reader: PDF Editor tops our pdf form filler apps ranking as of September 2026, with a 4.6-star average from 651K App Store ratings, and it's free to download.
Yes — 16 of the top pdf form filler apps we rank are free to download, including Acrobat Reader: PDF Editor and Form Filler: fill & sign forms.
Acrobat Reader: PDF Editor has no ads and offers in-app purchases, according to its App Store listing as of September 2026.
We track 246+ pdf form filler apps on the iOS App Store as of September 2026, ranked by rating, recency, and analysis of real user reviews.
You can view, edit, annotate, and sign PDF documents. The app also allows you to convert files to and from PDF, compress PDFs, and use AI features for summarization and document interaction. You can also collaborate on files and store them online.
Paid features include the Adobe Acrobat AI Assistant for summarizing and querying documents, advanced PDF editing for text and images, merging and organizing PDFs, and higher-quality voice options for reading PDFs aloud. These features are accessible through a subscription.

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