Comparison

Sign PDF documents vs uSign

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

Head to head
About

Sign PDF documents

Easily sign documents digitally without printing. This app allows for unlimited signatures without requiring a subscription or registration, making document signing quick and convenient.

Highlights
  • Unlimited digital signatures
  • No subscription required
  • No registration needed
  • Sign without printing
  • Document archiving
Features
Read full description

Sign any document in seconds — right from your iPhone and iPad. Got a contract by email? Sign it and send it back in under a minute: no printer, no scanner, no stress. SIGN IN 3 SIMPLE STEPS 1. Import any PDF or scan a paper document with your camera 2. Draw your signature with your finger — save it once, reuse it forever 3. Place it on the document, save and share EVERYTHING YOU NEED • Create and save multiple signatures and your initials • Built-in scanner: turn paper into a signable PDF • Add text and today's date with one tap • Fill and sign contracts, forms, quotes and leases • Sign multi-page documents, page by page • Your documents never leave your device: private and secure • Works offline — no account, no registration Perfect for freelancers, small businesses, real estate agents, HR — and anyone who hates printers. Download Sign PDF and sign your first document in less than a minute! Unlock all Sign PDF Pro features by choosing the plan that best fits your needs: Auto-Renewing Subscriptions * Monthly: Full access to all Pro features. * Yearly: Full access with a 3-day free trial. Subscription Details: * Payment will be charged to your iTunes account at confirmation of purchase. * Subscriptions automatically renew unless auto-renew is turned off at least 24 hours before the end of the current period. * Your account will be charged for renewal within 24 hours prior to the end of the current period. * You can manage your subscriptions and turn off auto-renewal by going to your Account Settings after purchase. * Any unused portion of a free trial period, if offered, will be forfeited when you purchase a subscription. One-Time Purchase * Lifetime Access: A one-time payment for lifetime access to all Pro features of Sign PDF. No recurring fees. Pro features include: unlimited signed documents, built-in document scanner, and an ad-free experience. Legal Information * Privacy Policy: https://www.freeprivacypolicy.com/privacy/view/000ea101de4e771dc9cc10e883deab0c * Terms of Use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/

About

uSign

Effortlessly sign and send documents from your mobile device. This app transforms your iPhone or iPad into a powerful e-signature tool for PDFs and other file types. Import, scan, sign, and share documents quickly and easily.

Highlights
  • Sign documents anywhere
  • Fill and edit documents
  • Create electronic signatures
  • Import documents
  • Share as PDF or JPG
Features
Read full description

uSign is the easiest way to sign and send documents for signature from your iPhones and iPads. uSign app will turn your iPhone or iPad into a powerful instrument for e-signing PDF documents and other formats. Quickly import or scan, add a signature, and share any document as a PDF or JPG file. Key Features: — Easily sign documents anywhere — Fill and edit documents — Create your electronic signature — Import your documents Privacy Policy: http://usign.tilda.ws/policy Terms of Use: http://usign.tilda.ws/terms

Screenshots

Sign PDF documents4 screens
uSign3 screens

Verdict

The call

The clearest difference is rating: uSign at 4.8 against Sign PDF documents's 1.0. uSign also leads on ads (none vs shown) and ratings volume (47 vs 1). Sign PDF documents's advantage is review sentiment (22% vs 0%) and monetization model (ad-supported vs free with in-app purchases). On price, update cadence, in-app purchases and device support 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. Sign PDF documents sells 3 in-app purchases, starting at $2.99 per month and uSign sells 3 in-app purchases, starting at $5.99 per 7 days. Whichever you choose, the download price is not the number that matters.

ReceptionRating · Positive reviews · Number of ratings

uSign holds the better App Store score, 4.8 against 1.0. That said, the two scores are not equally well evidenced: uSign has 47 ratings behind it against 1, so its average is the more settled of the two. Written reviews complicate that: 22% of Sign PDF documents's written reviews are positive against 0% of uSign's, so the app with the better star average is not the one people write more warmly about.

UpkeepUpdate frequency

Sign PDF documents ships an update every 3 weeks, uSign every 4 weeks. The most recent releases landed on October 4, 2026 and October 7, 2026 respectively.

Scorecard6 real differences · 4 level
Sign PDF documents versus uSign: the parameters behind the verdict, then further details
ParameterSign PDF documentsuSign
PriceFreeFree
Rating1.0 (1 ratings)4.8 (47 ratings) — better
Positive reviews22.2% of reviews — better0.0% of reviews
Number of ratings147 — better
Update frequencyEvery 3 weeks — betterEvery 4 weeks
AdsYesNo — better
In-app purchasesYesYes
MonetizationAd-supported — betterFree with in-app purchases
DevicesiPhone, iPad, iPod, Mac — betteriPhone, iPad, iPod
Requires iOS15.011.0 — better
Further details — not scored
Size19 MB43 MB
Age rating4+4+
DeveloperEmanuele FlorisHendrych Kowalski

Customer experience

Sign PDF documents

All ratings1 ratings
Positive0.0%
Neutral0.0%
Negative100.0%
Written reviews18 reviews
Positive22.2%
Neutral0.0%
Negative77.8%

uSign

All ratings47 ratings
Positive95.7%
Neutral2.1%
Negative2.1%
Written reviews1 reviews
Positive0.0%
Neutral0.0%
Negative100.0%

In-app purchases

3 purchases

Sign PDF documents

Subscriptions2
  • Unlimited Access$2.991 Month
  • Unlimited Access3 Days trial$8.991 Year
One-time1
  • PRO Lifetime Access$22.99
3 purchases

uSign

Subscriptions3
  • Premium Weekly3 Days trial$5.997 Days
  • Premium Weekly3 Days trial$9.997 Days
  • Premium Annual3 Days trial$69.991 Year

Questions

Is Sign PDF documents free?
Sign PDF documents is free to download, with in-app purchases available.
Is uSign free?
uSign is free to download, with in-app purchases available.
Which has better reviews, Sign PDF documents or uSign?
uSign is rated higher. Sign PDF documents averages 1.0 out of 5 from 1 ratings, while uSign averages 4.8 from 47 ratings.
Do Sign PDF documents or uSign have ads?
Sign PDF documents shows ads; uSign does not.
Which is updated more often, Sign PDF documents or uSign?
Sign PDF documents ships an update every 3 weeks, and uSign every 4 weeks. Most recently, Sign PDF documents was updated on October 4, 2026 and uSign on October 7, 2026.

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