Comparison

Expert Sign vs Sign PDF Documents

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

Head to head
About

Expert Sign

Easily sign documents and photos directly on your iPhone. Save your signature and apply it to PDFs or images, then share them instantly. Ideal for quick document signing on the go.

Highlights
  • Draw and save multiple signatures
  • Import handwritten signatures
  • Sign PDFs and document photos
  • Add dates with one tap
  • Resize and position signatures
  • Export via email or other apps
Features
Read full description

Sign any document in seconds. Expert Sign turns your iPhone into a pocket signature pad: save your signature once, drop it on any PDF or photo of a document, and send it straight back. Open the file, sign it, share it. That is the whole app. WHAT YOU CAN DO • Draw your signature with your finger, in black or blue ink • Keep several signatures and initials, and pick the right one in a tap • Import a photo of your handwritten signature: the paper background is removed automatically • Sign PDF documents and photos of paper documents • Add today's date in one tap • Drag to place each signature exactly where it belongs, pull the corner to resize it • Duplicate a signature to initial every page • Import from Files, Photos, Mail, iCloud Drive or any cloud service • Import straight from Expert Scan to sign what you just scanned • Export by email, by message, or into any other app BUILT FOR PAPERWORK THAT WILL NOT WAIT Rental agreements, NDAs, school forms, delivery notes, invoices, consent forms, employment contracts: anything that arrives as a PDF and has to go back signed today. PRIVATE BY DESIGN Your documents are signed right on your iPhone. They are never uploaded to our servers. FREE TO TRY Sign your first 10 documents for free. Expert Sign Plus, a one-time purchase, unlocks unlimited signing and removes ads. Part of the Expert suite, alongside Expert Scan. Questions or ideas: https://jmapp.com

About

Sign PDF Documents

Easily sign, stamp, and scan documents directly from your mobile device. Create custom signatures and add official seals to PDFs and other files in seconds. Streamline your paperwork and maintain a paperless workflow anywhere, anytime.

Highlights
  • Sign documents instantly
  • Create custom signatures
  • Add stamps and seals
  • Scan documents with camera
  • Handle paperwork digitally
  • Paperless workflow
Features
Read full description

Sign PDF Documents - SignX makes signing documents faster, easier, and more secure, right from your device. Whether you’re approving contracts, signing forms, or sending official papers, Sign PDF Documents - SignX lets you do it all in seconds. Get more done! Key Features: Sign Documents Instantly: Add your digital signature to PDFs and other documents with just a tap. Create Your Custom Signature: Personalize your signature for a professional touch every time. Add Stamps and Seals: Easily insert official stamps or company seals to make your documents stand out. Scan Documents in Seconds: Turn any paper document into a digital file using your camera — perfect for signing and sharing on the go. With Sign PDF Documents - SignX, you can handle all your paperwork digitally — anywhere, anytime. Save time, stay organized, and keep your workflow paperless. Download Sign PDF Documents - SignX today and experience the fastest way to sign, stamp, and send your documents. Privacy Policy: https://sites.google.com/view/signx-privacypolicy/home Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/

Screenshots

Expert Sign4 screens
Sign PDF Documents4 screens

Verdict

The call

The clearest difference is ads: Sign PDF Documents at none against Expert Sign's shown. Sign PDF Documents also leads on update cadence (every 3 days vs every 2 months) and iOS requirement (13.0 vs 15.0). On price, rating, ratings volume and in-app purchases there is nothing between them.

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

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. Expert Sign sells 1 one-off in-app purchase and Sign PDF Documents sells 2 in-app purchases, starting at $7.99 per 7 days. Whichever you choose, the download price is not the number that matters.

ReceptionRating · Positive reviews · Number of ratings

On the App Store both sit at effectively the same score — 4.4 for Expert Sign against 4.3 for Sign PDF Documents. Both are backed by a comparable volume of ratings — 7 and 3 respectively.

UpkeepUpdate frequency

Expert Sign ships an update every 2 months, Sign PDF Documents every 3 days. The most recent releases landed on November 3, 2026 and November 5, 2026 respectively.

Scorecard3 real differences · 7 level
Expert Sign versus Sign PDF Documents: the parameters behind the verdict, then further details
ParameterExpert SignSign PDF Documents
PriceFreeFree
Rating4.4 (7 ratings) — better4.3 (3 ratings)
Positive reviews100.0% of reviews—
Number of ratings7 — better3
Update frequencyEvery 2 monthsEvery 3 days — better
AdsYesNo — better
In-app purchasesYesYes
MonetizationFree with in-app purchasesFree with in-app purchases
DevicesiPhone, iPodiPhone, iPad, iPod — better
Requires iOS15.013.0 — better
Further details — not scored
Size15 MB56 MB
Age rating4+4+
DeveloperJulien meyerImad Khan

Customer experience

Expert Sign

All ratings7 ratings
Positive85.7%
Neutral0.0%
Negative14.3%
Written reviews1 reviews
Positive100.0%
Neutral0.0%
Negative0.0%

Sign PDF Documents

All ratings3 ratings
Positive66.7%
Neutral33.3%
Negative0.0%

In-app purchases

1 purchases

Expert Sign

One-time1
  • Expert Sign$1.99
2 purchases

Sign PDF Documents

Subscriptions2
  • Weekly Premium3 Days trial$7.997 Days
  • Yearly Premium$24.991 Year

Questions

Is Expert Sign free?
Expert Sign is free to download, with in-app purchases available.
Is Sign PDF Documents free?
Sign PDF Documents is free to download, with in-app purchases available.
Which has better reviews, Expert Sign or Sign PDF Documents?
Expert Sign is rated higher. Expert Sign averages 4.4 out of 5 from 7 ratings, while Sign PDF Documents averages 4.3 from 3 ratings.
Do Expert Sign or Sign PDF Documents have ads?
Expert Sign shows ads; Sign PDF Documents does not.
Which is updated more often, Expert Sign or Sign PDF Documents?
Expert Sign ships an update every 2 months, and Sign PDF Documents every 3 days. Most recently, Expert Sign was updated on November 3, 2026 and Sign PDF Documents on November 5, 2026.

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