Comparison

Sign Documents vs PDFX

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

Head to head
About

Sign Documents

Features
Read full description

SignEdge makes it easy to sign documents on your iPhone. Scan paperwork, create your signature, add it to PDFs or documents, and send the finished file in just a few taps. Use SignEdge to: - Create and save your electronic signature - Scan paper documents and forms - Fill and sign PDFs or document files - Add signatures, initials, and stamps - Edit, highlight, and prepare documents for sharing - Export signed files whenever you need them Whether you are handling work forms, agreements, receipts, school papers, or everyday documents, SignEdge helps you move from file to signed document quickly. Privacy Policy: https://signedge.click/privacy Terms of Use: https://signedge.click/terms

About

PDFX

Features
Read full description

PDFX opens your PDFs so you can read, mark up, sign and fill them on your phone. There is no account and no server: files are opened, edited and recognized on your device, and your original file is never changed. READ β€’ Open PDFs from Files, email or any app with β€œOpen in PDFX” β€’ Search the text, zoom in, and jump between pages β€’ Big files open quickly, page by page β€’ Password-protected PDFs open with the password MARK UP β€’ Pen, marker and highlighter β€” the highlighter snaps to the text line β€’ Add text, notes, boxes, circles, lines and arrows β€’ White-out, images, eraser and undo β€’ Every change saves as you go SIGN AND FILL FORMS β€’ Draw your signature once and place it on any page β€’ Type into form fields, tick checkboxes and choose options β€’ Add √, Γ—, ● marks and today’s date ORGANIZE PAGES β€’ Rotate, delete, duplicate and reorder pages β€’ Save selected pages as a new file β€’ Add blank pages, photos or pages from another PDF β€’ Merge several PDFs into one CONVERT AND SHARE β€’ Turn photos into a PDF, or scan paper documents with the camera β€’ Recognize text on a page and copy or share it β€’ Reduce file size for email (pages are saved as images in the smaller copy) β€’ Save pages as images, print, or share the finished PDF FREE WITH ADS, OR PRO PDFX is free with ads. PDFX Pro removes all ads. Choose a monthly subscription or a one-time lifetime purchase. Text recognition languages depend on your device. Privacy Policy: https://dsm0829.github.io/pdfx-privacy/ Terms of Use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/

Screenshots

Sign Documents4 screens
PDFX4 screens

Verdict

The call

The clearest difference is ads: Sign Documents at none against PDFX's shown. Sign Documents also leads on update cadence (daily vs weekly) and iOS requirement (13.0 vs 16.4). On price, in-app purchases and device support there is nothing between them.

Scored on Price Β· Rating Β· Positive reviews Β· Number of ratings Β· Update frequency Β· Ads Β· In-app purchases Β· Monetization Β· Best chart rank Β· Devices Β· Requires iOS

CostPrice Β· In-app purchases Β· Ads Β· Monetization

Both are free to download. Sign Documents sells 2 in-app purchases, starting at $6.99 per 7 days and PDFX sells 2 in-app purchases, starting at $0.49 per month. Whichever you choose, the download price is not the number that matters.

UpkeepUpdate frequency

Sign Documents ships an update daily, PDFX weekly. The most recent releases landed on October 31, 2026 and October 26, 2026 respectively.

Scorecard3 real differences Β· 3 level
Sign Documents versus PDFX: the parameters behind the verdict, then further details
ParameterSign DocumentsPDFX
PriceFreeFree
Update frequencyDaily β€” betterWeekly
AdsNo β€” betterYes
In-app purchasesYesYes
DevicesiPhone, iPodiPhone, iPad
Requires iOS13.0 β€” better16.4
Further details β€” not scored
Size42 MB64 MB
Age rating4+4+
DeveloperOLLY ADAMSYOU SEUNGMIN

In-app purchases

2 purchases

Sign Documents

Subscriptions2
  • Premium Subscription3 Days trial$6.997 Days
  • Premium Subscription$49.991 Year
2 purchases

PDFX

Subscriptions1
  • PDFX Pro Monthly$0.491 Month
One-time1
  • PDFX Pro Lifetime$5.99

Questions

Is Sign Documents free?
Sign Documents is free to download, with in-app purchases available.
Is PDFX free?
PDFX is free to download, with in-app purchases available.
Do Sign Documents or PDFX have ads?
PDFX shows ads; Sign Documents does not.
Which is updated more often, Sign Documents or PDFX?
Sign Documents ships an update daily, and PDFX weekly. Most recently, Sign Documents was updated on October 31, 2026 and PDFX on October 26, 2026.

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