Comparison

MobiPDF・PDF Text Editor・Reader vs PDF Unlock

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

PDF Unlock

Manage PDF security and convert documents offline. This tool allows you to unlock, lock, and scan PDFs without an internet connection. It also converts images to secure, password-protected PDFs.

Highlights
  • Offline PDF unlocking and locking
  • Password removal and auto-unlock
  • Image to PDF conversion
  • Document scanning to PDF
  • Secure PDF password management
  • Multi-language support
Read full description

PDF Unlock: Offline PDF Tools Your complete offline PDF toolkit to scan documents, unlock and protect PDFs, convert files, manage PDF passwords, and more — all without an internet connection. Key Features * PDF Unlock & Remove Password – Unlock secured PDFs and remove password protection when you have the required password. * Auto Unlock PDF – Save passwords securely on your device and automatically unlock similar PDFs without repeatedly entering the password. * Lock PDF – Protect your PDFs with a password and keep your documents secure. * PDF Password Manager – Store and manage your PDF passwords locally, so you don’t have to remember them every time. * Scan Documents – Scan documents directly from your device and create high-quality PDFs. * Image to PDF – Convert one or multiple images into a single PDF, with optional password protection. * PDF to Image – Convert PDF pages into image files quickly and easily. * Merge PDFs – Combine multiple PDF files into a single document. * Split PDF – Extract selected pages or split a PDF into separate documents. * Compress PDF – Reduce PDF file size while keeping your documents easy to use and share. * Organise PDF – Manage, reorder, remove, and organize PDF pages with ease. * Sign PDF – Add your signature to PDF documents quickly and conveniently. * PDF History – Quickly access your recently processed PDF files. * Multiple Languages – Available in English, Hindi, French, German, Russian, Japanese, and more. * Settings & Support – Customize your experience and get help whenever you need it. 100% Offline & Secure Your files never leave your device. PDF Unlock processes your PDFs locally without requiring an internet connection. Your documents and saved PDF passwords stay on your device instead of being uploaded to a cloud server. One app for your everyday PDF needs, wherever you work. Is a Subscription/In-App Purchase Required? Yes. A subscription or lifetime purchase is required to access all current and upcoming premium features. What Do You Get After Subscribing? Premium gives you full access to all current and upcoming features of PDF Unlock. No additional payments are required. All included features are available with your active subscription. Is a Free Trial Available? Yes. A 3-day free trial is available so you can explore the app before subscribing. Subscription Terms: • Monthly, Yearly, and Lifetime purchase options are available. • Payment is charged to your Apple ID account at confirmation of purchase. • Subscriptions automatically renew unless canceled at least 24 hours before the end of the current subscription period. • Your account will be charged for renewal within 24 hours before the end of the current period. • You can manage or cancel your subscription at any time through your App Store account settings. Terms of use: https://sites.google.com/view/appsadore/term Privacy policy: https://sites.google.com/view/appsadore/privacy Support: Need help? Have a question or feedback? Contact us at appsadoretech@gmail.com.

Screenshots

MobiPDF・PDF Text Editor・Reader4 screens
PDF Unlock4 screens

Verdict

The call

The clearest difference is monetization model: MobiPDF・PDF Text Editor・Reader at free with in-app purchases against PDF Unlock's subscription. MobiPDF・PDF Text Editor・Reader also leads on ratings volume (7.6K vs 2) and rating (4.8 vs 4.5). PDF Unlock's advantage is update cadence (every 8 days vs monthly) and device support (4 vs 2). On price, review sentiment, ads 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. MobiPDF・PDF Text Editor・Reader sells 13 in-app purchases, starting at $7.99 per 7 days and PDF Unlock sells 6 in-app purchases, starting at $0.99 per month. Whichever you choose, the download price is not the number that matters.

ReceptionRating · Positive reviews · Number of ratings

MobiPDF・PDF Text Editor・Reader holds the better App Store score, 4.8 against 4.5. That said, the two scores are not equally well evidenced: MobiPDF・PDF Text Editor・Reader has 7.6K ratings behind it against 2, so its average is the more settled of the two. Written reviews complicate that: 83% of MobiPDF・PDF Text Editor・Reader's written reviews are positive against 90% of PDF Unlock's, so the app with the better star average is not the one people write more warmly about.

UpkeepUpdate frequency

MobiPDF・PDF Text Editor・Reader ships an update monthly, PDF Unlock every 8 days. The most recent releases landed on October 26, 2026 and October 24, 2026 respectively.

Scorecard7 real differences · 4 level
MobiPDF・PDF Text Editor・Reader versus PDF Unlock: the parameters behind the verdict, then further details
ParameterMobiPDF・PDF Text Editor・ReaderPDF Unlock
PriceFreeFree
Rating4.8 (7.6K ratings) — better4.5 (2 ratings)
Positive reviews82.6% of reviews90.0% of reviews — better
Number of ratings7.6K — better2
Update frequencyMonthlyEvery 8 days — better
AdsNoNo
In-app purchasesYesYes
MonetizationFree with in-app purchases — betterSubscription
Best chart rank#100 — better—
DevicesiPhone, iPadiPhone, iPad, iPod, Mac — better
Requires iOS18.015.6 — better
Further details — not scored
Size216 MB79 MB
Age rating+44+
DeveloperMobiSystems, Inc.Dipak Chhag

Customer experience

MobiPDF・PDF Text Editor・Reader

All ratings7,430 ratings
Positive95.5%
Neutral2.5%
Negative2.0%
Written reviews582 reviews
Positive82.6%
Neutral3.4%
Negative13.9%

PDF Unlock

All ratings2 ratings
Positive100.0%
Neutral0.0%
Negative0.0%
Written reviews10 reviews
Positive90.0%
Neutral0.0%
Negative10.0%

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

PDF Unlock

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
6 purchases

PDF Unlock

Subscriptions4
  • PDF Unlock:Offline PDF Tool-Monthly$0.991 Month
  • PDF Unlock Genie - Monthly3 Days trial$2.991 Month
  • PDF Unlock:Offline PDF Tool-Annual$6.991 Year
Show 1 more
  • PDF Unlock Genie - Yearly3 Days trial$19.991 Year
One-time2
  • PDF Unlock Genie - Lifetime$14.99
  • PDF Unlock Genie - Lifetime$39.99

Questions

Is MobiPDF・PDF Text Editor・Reader free?
MobiPDF・PDF Text Editor・Reader is free to download, with in-app purchases available.
Is PDF Unlock free?
PDF Unlock is free to download, with in-app purchases available.
Which has better reviews, MobiPDF・PDF Text Editor・Reader or PDF Unlock?
MobiPDF・PDF Text Editor・Reader is rated higher. MobiPDF・PDF Text Editor・Reader averages 4.8 out of 5 from 7.6K ratings, while PDF Unlock averages 4.5 from 2 ratings.
Do MobiPDF・PDF Text Editor・Reader or PDF Unlock have ads?
Neither MobiPDF・PDF Text Editor・Reader nor PDF Unlock shows ads.
Which is updated more often, MobiPDF・PDF Text Editor・Reader or PDF Unlock?
MobiPDF・PDF Text Editor・Reader ships an update monthly, and PDF Unlock every 8 days. Most recently, MobiPDF・PDF Text Editor・Reader was updated on October 26, 2026 and PDF Unlock on October 24, 2026.

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