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Best Fill PDF Free Apps

250+ iOS apps curated and reviewed

4.6 avg rating
20 free apps
Updated October 2026

Acrobat Reader is the household name in fill pdf free, but it's far from the only option. We track 250+ alternatives and competitors on iOS β€” many free, many higher-rated than you'd expect.

Compare top Fill PDF Free Apps (October 2026)

#AppPriceRatingAdsIn-App PurchasesUpdated
1Acrobat Reader: PDF EditorAcrobat Reader: PDF EditorFree4.6β˜… (662K)NoYesOct 2026
2pdfFiller: edit PDF documentspdfFiller: edit PDF documentsFree4.5β˜… (9.1K)NoYesOct 2026
3Form Filler: fill & sign formsForm Filler: fill & sign formsFree4.6β˜… (32K)NoNoOct 2026
4PDF Editor: Fill, Sign & ScanPDF Editor: Fill, Sign & ScanFree4.0β˜… (2)NoNoOct 2026
5FreePDF: PDF Converter & ScanFreePDF: PDF Converter & ScanFree4.7β˜… (9)YesYesOct 2026
6PDF Gear - PDF Editor & ReaderPDF Gear - PDF Editor & ReaderFree4.7β˜… (8.7K)NoNoOct 2026
7ExplorePDF: Read, Fill & SignExplorePDF: Read, Fill & SignFreeβ€”NoNoOct 2026
8Nexa PDF Reader&ScannerNexa PDF Reader&ScannerFree4.0β˜… (1)YesNoOct 2026

Top Picks for Fill PDF Free

Acrobat Reader: PDF Editor#1

Acrobat Reader: PDF Editor by Adobe Inc.

Documents Converter & Signer
Editor's Choice
πŸ’Ό Business
4.6😞(662K 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

  • πŸš€ Fast and efficient
  • πŸ”’ Secure document storage
  • πŸ‘ Convenient for reading and annotating PDFs
  • πŸ‘ Useful for students and professionals

Room to Improve

  • πŸ› Buggy and unreliable
  • πŸ”’ Overly intrusive login requirements
  • πŸ’° Expensive subscription model
  • πŸ‘Ž Counterintuitive user interface changes
  • πŸ” Poor search and organization features
pdfFiller: edit PDF documents#2

pdfFiller: edit PDF documents by airSlate, Inc.

Scan, fill, sign,make pdf docs
Strong Contender
πŸ’Ό Business
4.5😞(9.1K ratings)
FreeIn-App Purchases
#46in Business
pdfFiller: edit PDF documents screenshot 1
pdfFiller: edit PDF documents screenshot 2
pdfFiller: edit PDF documents screenshot 3
pdfFiller: edit PDF documents screenshot 4
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

  • πŸ‘ Easy to use
  • πŸš€ Makes virtual work easy
  • πŸ’‘ Great customer service/support
  • πŸ‘ Simple and organized
  • πŸ‘ Helpful for PDF management

Room to Improve

  • πŸ› Buggy and glitchy
  • πŸ’° Expensive subscription
  • πŸ”’ Concerns about privacy and security
  • πŸ€₯ Misleading/deceptive advertising
  • πŸ”’ Difficult to cancel subscription
  • πŸ› Issues with saving/exporting documents
Form Filler: fill & sign forms#3

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

Create and Edit pdf documents
Worth Considering
πŸ“Š Productivity
4.6😐(32K ratings)
Free
Form Filler: fill & sign forms screenshot 1
Form Filler: fill & sign forms screenshot 2
Form Filler: fill & sign forms screenshot 3
Form Filler: fill & sign forms screenshot 4
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

  • πŸ‘ User-friendly and easy to use
  • πŸš€ Convenient and time-saving
  • πŸ’‘ Helpful for managing documents
  • πŸš€ Simplifies form filling process

Room to Improve

  • πŸ› Glitchy and buggy performance
  • πŸ‘Ž Poor navigation and UI design
  • πŸ” Difficulty entering information accurately
  • πŸ“± Not optimized for mobile devices

More Fill PDF Free apps to explore

FAQ about Fill PDF Free

What are the best fill pdf free apps for iPhone?
Acrobat Reader: PDF Editor tops our fill pdf free apps ranking as of October 2026, with a 4.6-star average from 662K App Store ratings, and it's free to download.
Acrobat Reader: PDF Editor has no ads and offers in-app purchases, according to its App Store listing as of October 2026.
We track 250+ fill pdf free apps on the iOS App Store as of October 2026, ranked by rating, recency, and analysis of real user reviews.