Comparison

MobiPDF・PDF Text Editor・Reader vs Sign documents

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

Head to head
About

MobiPDF・PDF Text Editor・Reader

Edit, create, and secure PDF documents on your mobile device. Scan paper documents to editable PDFs, recognize text with OCR, and fill or sign forms. Convert between PDF and other formats, and protect sensitive files with passwords.

Highlights
  • Scan documents to editable PDFs
  • Recognize text with OCR
  • Edit text, images, and signatures
  • Fill and sign forms
  • Convert PDFs to Word, Excel, PowerPoint, ePub
  • Protect PDFs with passwords
  • Organize and merge PDF pages
Features
Read full description

MobiPDF is a complete mobile PDF suite that helps freelancers, remote workers, and small business owners scan, edit, sign, convert, and protect PDF files — also ideal for students and anyone needing a powerful yet simple PDF tool — all from one intuitive app on iPhone and iPad. KEY CAPABILITIES • Edit PDFs like a pro — modify text, images, and formatting directly in any PDF, and fully control your pages: rearrange, insert, delete, extract, duplicate, rotate, and merge PDFs into one • Scan paper documents to PDF with your camera — receipts, contracts, invoices, IDs, passports, and more • Convert PDFs to Word, Excel, and ePub while preserving original layout and formatting — and convert Word, Excel, PowerPoint, PNG, and JPEG files to PDF for easy sharing • Fill out and sign PDF forms and contracts on the go — draw or reuse saved electronic signatures • Recognize text from scans and images using OCR technology and share instantly • Read PDFs your way — multiple reading modes including distraction-free reading, night mode, and Read Aloud to listen to any PDF hands-free while driving, commuting, or on the go • View, highlight, annotate, and mark up PDFs — add comments, stamps, drawings, and attachments • Protect sensitive documents with passwords, encryption, and digital certificates • Store and sync via 5GB free cloud storage on MobiDrive, plus Google Drive and Dropbox USE CASES • Edit the text, images, or layout of a PDF contract or report directly on your iPhone or iPad — no desktop needed • Convert a PDF to Word to make extensive edits, then save back to PDF for sharing • Scan a paper document, recognize its text with OCR, and convert it into a fully editable PDF • Scan a paper contract, sign it on your iPhone or iPad, and send it back — without printing • Fill out a client form or invoice PDF on the go, directly from your phone • Have a PDF report, contract, or document read aloud during your commute or drive • Merge multiple PDFs into one organized proposal, report, or portfolio • Protect a sensitive business document with a password before sharing with a client • Students: scan handwritten notes or assignments and submit them as PDFs instantly • Review, annotate, and mark up PDF documents on iPad's larger screen for a near-desktop experience WHY MOBIPDF • Advanced mobile PDF editor — edit text, images, formatting, and pages directly in any PDF • Complete PDF converter — reliably convert PDFs to and from Word, Excel, PNG, and JPEG, plus PowerPoint to PDF and PDF to ePub • All-in-one solution — edit, scan, sign, convert, protect, read, and organize without switching apps • Purpose-built for iPhone and iPad — intuitive mobile-first experience • Read Aloud turns any PDF into audio — stay informed while commuting or multitasking • Advanced OCR turns any scan or image into searchable, shareable text • Electronic signatures and fillable forms — no printing or faxing needed • Simple and intuitive — accessible for all ages and experience levels • Trusted by millions of MobiSystems users worldwide PREMIUM • Full PDF editing — modify text, images, and formatting in any PDF • Full PDF conversion suite — PDF to and from Word, Excel, PNG, JPEG, plus PowerPoint to PDF and PDF to ePub • 50GB cloud storage on MobiDrive • Advanced annotation, markup tools, and night mode • Password protection and digital certificate support TL;DR MobiPDF is the go-to mobile PDF suite for freelancers, remote workers, and small business owners — offering powerful PDF editing, reliable conversion to and from all major formats, scanning, signing, and Read Aloud, all in one intuitive app optimized for iPhone and iPad. Help Centre: https://support.mobisystems.com/hc/en-us/sections/20794399449757-iOS Privacy Policy: https://mobisystems.com/en-us/privacy-policy Terms of Use: https://mobisystems.com/en-us/terms-of-use

About

Sign documents

This app allows you to quickly and securely sign digital documents like PDFs, contracts, and forms. It offers various signature styles, a document scanner, and instant sharing options, eliminating the need for printing or faxing. Sign documents on the go with bank-level encryption for legally binding results.

Highlights
  • Sign PDFs and documents on the go
  • Create professional electronic signatures
  • Scan and sign paper documents
  • Multiple signature styles (draw, type, upload)
  • Secure and legally binding signatures
  • Share signed documents instantly
  • Offline signing capability
Features
Read full description

Sign Documents - Your Complete Digital Signature Solution Transform the way you sign documents with the most powerful electronic signature app. Whether you need to sign PDFs, contracts, forms, or agreements, our document signer makes it fast, secure, and legally binding. KEY FEATURES: - Sign Documents Anywhere - Sign PDFs and docs on the go - Digital Signature - Create professional electronic signatures - Document Scanner - Scan and sign paper documents instantly - Multiple Signature Styles - Draw, type, or upload your signature - PDF Sign - Sign PDF files with ease - Secure & Legal - Bank-level encryption for all signatures - Share Instantly - Send signed documents via email or cloud PERFECT FOR: Business professionals, freelancers, remote workers, real estate agents, HR departments, and anyone who needs to sign documents quickly and securely. WHY CHOOSE OUR SIGNATURE APP? - Lightning-fast document signing - No printing, scanning, or faxing required - Unlimited document storage - Works offline - sign without internet SUBSCRIPTIONS : - Monthly Plan: 2.99$/month. - Yearly Plan: 19.99$/year. Pricing may vary depending on the country of residence. • Payment will be charged to iTunes Account at confirmation of purchase • Subscription automatically renews unless auto-renew is turned off at least 24-hours before the end of the current period • Account will be charged for renewal within 24-hours prior to the end of the current period, and identify the cost of the renewal • Subscriptions may be managed by the user and auto-renewal may be turned off by going to the user's Account Settings after purchase • Any unused portion of a free trial period, if offered, will be forfeited when the user purchases a subscription to that publication, where applicable Privacy Policy: https://nwlamll.github.io/apps/pp.html Terms of Use : https://nwlamll.github.io/apps/termsofuse.html

Screenshots

MobiPDF・PDF Text Editor・Reader4 screens
Sign documents4 screens

Verdict

The call

The clearest difference is ads: MobiPDF・PDF Text Editor・Reader at none against Sign documents's shown. MobiPDF・PDF Text Editor・Reader also leads on ratings volume (7.6K vs 1) and chart position (#98 vs unranked). Sign documents's advantage is update cadence (weekly vs monthly) and rating (5.0 vs 4.8). On price, in-app purchases, monetization model 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. MobiPDF・PDF Text Editor・Reader sells 13 in-app purchases, starting at $7.99 per 7 days and Sign documents sells 3 in-app purchases, starting at $1.99 per month. Whichever you choose, the download price is not the number that matters.

ReceptionRating · Positive reviews · Number of ratings

Sign documents holds the better App Store score, 5.0 against 4.8. That said, the two scores are not equally well evidenced: MobiPDF・PDF Text Editor・Reader has 7.6K ratings behind it against 1, so its average is the more settled of the two.

UpkeepUpdate frequency

MobiPDF・PDF Text Editor・Reader ships an update monthly, Sign documents weekly. Both last shipped on October 24, 2026.

Scorecard5 real differences · 6 level
MobiPDF・PDF Text Editor・Reader versus Sign documents: the parameters behind the verdict, then further details
ParameterMobiPDF・PDF Text Editor・ReaderSign documents
PriceFreeFree
Rating4.8 (7.6K ratings)5.0 (1 ratings) — better
Positive reviews82.5% of reviews—
Number of ratings7.6K — better1
Update frequencyMonthlyWeekly — better
AdsNo — betterYes
In-app purchasesYesYes
MonetizationFree with in-app purchasesFree with in-app purchases
Best chart rank#98 — better—
DevicesiPhone, iPad — betteriPhone
Requires iOS18.0 — better18.2
Further details — not scored
Size216 MB16 MB
Age rating+44+
DeveloperMobiSystems, Inc.Nawal Amallou

Customer experience

MobiPDF・PDF Text Editor・Reader

All ratings7,430 ratings
Positive95.5%
Neutral2.5%
Negative2.0%
Written reviews578 reviews
Positive82.5%
Neutral3.5%
Negative14.0%

Sign documents

All ratings1 ratings
Positive100.0%
Neutral0.0%
Negative0.0%

Bugs and requests

MobiPDF・PDF Text Editor・Reader

Reported bugs

4 issues
  • Text editing issues
  • Image fields in forms don't work
  • Incompatible with dynamic PDFs
  • Activation issues

Requested features

4 requests
  • Add snap tool for cleaner documents
  • Improve font sync
  • Offer one-time purchase option
  • Develop a Mac OS version

Sign documents

Not enough reviews yet to summarise bugs or requests.

In-app purchases

13 purchases

MobiPDF・PDF Text Editor・Reader

Subscriptions13
  • PDF Extra Premium$7.997 Days
  • PDF Extra Premium Weekly$7.997 Days
  • PDF Extra Premium 2023 Weekly7 Days trial$7.997 Days
Show 10 more
  • PDF Extra Premium Weekly7 Days trial$7.997 Days
  • PDF Extra Premium2 variants$9.991 Month
  • PDF Extra Premium 2023 Weekly7 Days trial$9.997 Days
  • Weekly Unlimited Access7 Days trial3 variants$9.997 Days
  • PDF Extra Premium 2023 Monthly$12.991 Month
  • PDF Extra Premium Yearly7 Days trial$24.991 Year
  • PDF Extra Premium3 Days trial$29.991 Year
  • PDF Extra Premium Yearly3 Days trial2 variants$49.991 Year
  • PDF Extra Premium3 Days trial$49.991 Year
  • Yearly Unlimited Access3 Days trial$49.991 Year
3 purchases

Sign documents

Subscriptions2
  • SwiftSign Pro$1.991 Month
  • SwiftSign Pro$9.991 Year
One-time1
  • 10 Credits$2.99

Questions

Is MobiPDF・PDF Text Editor・Reader free?
MobiPDF・PDF Text Editor・Reader is free to download, with in-app purchases available.
Is Sign documents free?
Sign documents is free to download, with in-app purchases available.
Which has better reviews, MobiPDF・PDF Text Editor・Reader or Sign documents?
Sign documents is rated higher. MobiPDF・PDF Text Editor・Reader averages 4.8 out of 5 from 7.6K ratings, while Sign documents averages 5.0 from 1 ratings.
Do MobiPDF・PDF Text Editor・Reader or Sign documents have ads?
Sign documents shows ads; MobiPDF・PDF Text Editor・Reader does not.
Which is updated more often, MobiPDF・PDF Text Editor・Reader or Sign documents?
MobiPDF・PDF Text Editor・Reader ships an update monthly, and Sign documents weekly. Most recently, MobiPDF・PDF Text Editor・Reader was updated on October 24, 2026 and Sign documents on October 24, 2026.

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