Best Fill PDF Apps

248+ iOS apps curated and reviewed

4.7 avg rating
20 free apps
Updated October 2026

Acrobat Reader is the household name in fill pdf, but it's far from the only option. We track 248+ alternatives and competitors on iOS — many free, many higher-rated than you'd expect.

Compare top Fill PDF Apps (October 2026)

#AppPriceRatingAdsIn-App PurchasesUpdated
1Acrobat Reader: PDF EditorAcrobat Reader: PDF EditorFree4.6★ (663K)NoYesOct 2026
2PDF Fill & Sign. Editor FillerPDF Fill & Sign. Editor FillerFree4.6★ (6.7K)NoYesOct 2026
3Form Filler: fill & sign formsForm Filler: fill & sign formsFree4.6★ (32K)NoNoOct 2026
4pdfFiller: edit PDF documentspdfFiller: edit PDF documentsFree4.5★ (9.2K)NoYesOct 2026
5PDF Expert: Editor & ReaderPDF Expert: Editor & ReaderFree4.7★ (216K)NoYesOct 2026
6SparkPDF: Scan, Sign & FillSparkPDF: Scan, Sign & FillFree5.0★ (2)YesYesOct 2026
7ExplorePDF: Read, Fill & SignExplorePDF: Read, Fill & SignFree—NoNoOct 2026
8PDF Fill&Sign-Adobe PDF editorPDF Fill&Sign-Adobe PDF editorFree5.0★ (2)NoYesMay 2026

Top Picks for Fill PDF

Acrobat Reader: PDF Editor#1

Acrobat Reader: PDF Editor by Adobe Inc.

Documents Converter & Signer
Editor's Choice
💼 Business
4.6😞(663K 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
PDF Fill & Sign. Editor Filler#2

PDF Fill & Sign. Editor Filler by 7270356 Canada Inc

Document Reader and Signer
Strong Contender
💼 Business
4.6😐(6.7K ratings)
FreeIn-App Purchases
PDF Fill & Sign. Editor Filler screenshot 1
PDF Fill & Sign. Editor Filler screenshot 2
PDF Fill & Sign. Editor Filler screenshot 3
PDF Fill & Sign. Editor Filler screenshot 4
PDF Fill & Sign. Editor Filler screenshot 5
PDF Fill & Sign. Editor Filler screenshot 6

Streamline document management with this app. Easily sign, fill, edit, and share PDFs on the go. Say goodbye to printers and scanners and embrace digital productivity.

What We Love

  • 🚀 Easy to use
  • 🚀 Convenient for work and business documents
  • 🚀 Useful app for managing files
  • 🚀 Intuitive design and modern feel
  • 🚀 Affordable compared to other PDF editors

Room to Improve

  • 🐛 Crashes frequently
  • 🐛 Issues with text alignment and editing
  • 🐛 Incompatible with some PDF files
  • 🐛 Small viewing area on mobile devices
  • 💰 Misleading about free features
Form Filler: fill & sign forms#3

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

Create and Edit pdf documents
Worth Considering
📊 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

More Fill PDF apps to explore

FAQ about Fill PDF

What are the best fill pdf apps for iPhone?
Acrobat Reader: PDF Editor tops our fill pdf apps ranking as of October 2026, with a 4.6-star average from 663K App Store ratings, and it's free to download.
Yes — 20 of the top fill pdf apps we rank are free to download, including Acrobat Reader: PDF Editor and PDF Fill & Sign. Editor Filler.
Acrobat Reader: PDF Editor has no ads and offers in-app purchases, according to its App Store listing as of October 2026.
We track 248+ fill pdf apps on the iOS App Store as of October 2026, ranked by rating, recency, and analysis of real user reviews.

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