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Best Fill PDF Free Apps

250+ iOS apps curated and reviewed

4.6 avg rating
20 free apps
Updated September 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 (September 2026)

#AppPriceRatingAdsIn-App PurchasesUpdated
1Acrobat Reader: PDF EditorAcrobat Reader: PDF EditorFree4.6β˜… (654K)NoYesOct 2026
2pdfFiller: edit PDF documentspdfFiller: edit PDF documentsFree4.4β˜… (8.5K)NoYesSep 2026
3FreePDF: PDF Converter & ScanFreePDF: PDF Converter & ScanFreeβ€”YesYesSep 2026
4Form Filler: fill & sign formsForm Filler: fill & sign formsFree4.6β˜… (32K)NoNoOct 2026
5PDF Gear - PDF Editor & ReaderPDF Gear - PDF Editor & ReaderFree4.7β˜… (8.7K)NoNoOct 2026
6PDF Editor: Fill, Sign & ScanPDF Editor: Fill, Sign & ScanFreeβ€”NoNoJul 2026
7Signora - Fill & Sign PDFSignora - Fill & Sign PDFFreeβ€”YesYesMay 2026
8DocFill – PDF Editor & MergerDocFill – PDF Editor & MergerFreeβ€”NoYesAug 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😞(654K 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
4.4😞(8.5K ratings)
FreeIn-App Purchases
#60in 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

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 September 2026, with a 4.6-star average from 654K 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 September 2026.
We track 250+ fill pdf free apps on the iOS App Store as of September 2026, ranked by rating, recency, and analysis of real user reviews.