Comparison

MTA Shield vs PDF Master

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

Head to head
About

MTA Shield

Secure your mobile devices and personal information from online threats. Protect your family with parental controls, locate lost devices, and safeguard your online activities with a VPN and password vault. Requires an active MTA Internet subscription.

Highlights
  • Device protection from online threats
  • Online banking and shopping security
  • Lost/stolen device location and protection
  • Parental controls and content management
  • VPN for privacy
  • Password vault
  • Web-based family device management
Features
Read full description

Today, the Internet is full of criminals. Their goals range from stealing your private information, to damaging your devices, spreading harmful content and more. With MTA Shield, you can ensure the safety and security of all of you and your loved ones’ mobile devices. MTA Shield can be downloaded on up to 10 devices. Protect all of your and your family’s devices from criminals and hackers; both at home and on the go. Ensure your children are safe with the included Parental Controls and Content Management. Protect your children and decide what they see and where they go online. If your device is stolen or lost, Mobile Shield helps you locate and protect it, by locking your device or erasing its contents. With MTA Shield, you are able to: • Protect your mobile devices • Keep your personal information safe while banking and shopping online • Locate your device if it is lost or stolen • Protect your children while they surf the internet with Parental Controls • VPN for privacy • Password vault to secure all of your passwords • Manage and protect all your family’s devices using a simple, web-based dashboard *MTA Shield is exclusively available only to MTA Internet subscribers—an active MTA Internet service is a requirement for gaining access to use this app. *Disclaimer: Continued use of GPS running in the background can dramatically decrease battery life.

About

PDF Master

This app offers a comprehensive suite of tools for managing PDF documents on iOS. It allows users to scan physical documents and gallery images into PDFs, create new PDFs from scratch, view existing files, merge multiple PDFs, and extract text using OCR technology.

Highlights
  • Scan photos to PDF
  • Convert gallery images to PDF
  • Create new PDF files
  • View and read PDF documents
  • Merge multiple PDF files
  • OCR text recognition
Features
Read full description

PDF Master - Your Ultimate PDF Companion Welcome to PDF Master, the powerful and user-friendly iOS PDF app that provides a comprehensive solution for all your PDF needs. Whether you need to scan photos to PDF, organize gallery images, create new PDF, view, or merge existing PDF files, PDF Master has you covered. - Scan Photos to PDF: Effortlessly convert your physical documents, photos, or handwritten notes into high-quality PDF documents. - Convert Gallery Images to PDF: Select images from your gallery, quickly create beautiful PDF files for easy sharing and storage. - Create PDF Files: Build new PDF from scratch, add text, images, and annotations, tailor your documents to your liking. - View PDF: Browse and read PDF files, with support for page zoom, rotation, and soon-to-come bookmark features, ensuring a comfortable reading experience. - Merge PDF Files: Combine multiple PDF files into one, effortlessly manage and organize your documents. - OCR (Text Recognition): Utilize OCR technology to extract text from scanned documents, making content more searchable and editable. PDF Master is your ideal choice for working with PDF files in various scenarios, whether in the office, school or daily life. Download PDF Master now and start a convenient new way to manage PDF documents! Payment & Subscription Terms: Choose between the following subscription options for unlimited access to all features: You may cancel your subscription at any time You can cancel auto-renewal at any time, given that the cancellation is at least 24 hours before the end of the current period. Any unused portion of a free trial period will be forfeited when making a purchase of an auto-renewing subscription. Manage your subscription directly from your iPhone Subscriptions can be managed by the user and auto-renewal can be turned off by going to the Account Settings: Account Settings: - Open the Settings app. - Tap your name. - Tap Subscriptions. - Tap the subscription that you want to manage. For app support and more information, reach out to us at: kma45143@outlook.com Privacy policy: https://sites.google.com/view/pdf-master-privacy-policy/ Terms of use: https://sites.google.com/view/pdfmastertermsofuse/

Screenshots

MTA Shield4 screens
PDF Master4 screens

Verdict

The call

The clearest difference is in-app purchases: MTA Shield at none against PDF Master's 12. MTA Shield also leads on ads (none vs shown) and rating (4.6 vs 4.3). PDF Master's advantage is update cadence (every 2 weeks vs every 8 months) and ratings volume (200 vs 14). On price 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. PDF Master sells 12 in-app purchases, starting at $0.99 per 7 days. MTA Shield asks for nothing beyond the download.

ReceptionRating · Positive reviews · Number of ratings

MTA Shield holds the better App Store score, 4.6 against 4.3. That said, the two scores are not equally well evidenced: PDF Master has 200 ratings behind it against 14, so its average is the more settled of the two.

UpkeepUpdate frequency

MTA Shield ships an update every 8 months, PDF Master every 2 weeks. The most recent releases landed on August 16, 2026 and September 27, 2026 respectively.

Scorecard7 real differences · 3 level
MTA Shield versus PDF Master: the parameters behind the verdict, then further details
ParameterMTA ShieldPDF Master
PriceFreeFree
Rating4.6 (14 ratings) — better4.3 (200 ratings)
Positive reviews—9.1% of reviews
Number of ratings14200 — better
Update frequencyEvery 8 monthsEvery 2 weeks — better
AdsNo — betterYes
In-app purchasesNo — betterYes
MonetizationAd-supported — betterSubscription
DevicesiPhone, iPadiPhone, iPod
Requires iOS18.014.0 — better
Further details — not scored
Size277 MB119 MB
Age rating4+4+
DeveloperMatanuska TelephoneCheeseJoy Apps

Customer experience

MTA Shield

All ratings14 ratings
Positive85.7%
Neutral14.3%
Negative0.0%

PDF Master

All ratings200 ratings
Positive79.0%
Neutral7.0%
Negative14.0%
Written reviews11 reviews
Positive9.1%
Neutral0.0%
Negative90.9%

In-app purchases

None

MTA Shield

No in-app purchases

12 purchases

PDF Master

Subscriptions11
  • PDF Master$0.997 Days
  • weekly3 Days trial$4.997 Days
  • PDF Master PRO 1 Week$5.997 Days
Show 8 more
  • PDF Master PRO 1 Week3 Days trial$5.997 Days
  • PDF Master PRO 1 Week7 Days trial$5.997 Days
  • PDF Master PRO 1 Week3 Days trial$9.997 Days
  • PDF Master PRO 1 Week7 Days trial$9.997 Days
  • Monthly Pro$9.991 Month
  • PDF Master PRO 1 Year$29.991 Year
  • PDF Master PRO 1 Year$34.991 Year
  • PDF Master PRO 1 Year$39.991 Year
One-time1
  • PDF Master Pro$19.99

Questions

Is MTA Shield free?
MTA Shield is free to download, with no in-app purchases.
Is PDF Master free?
PDF Master is free to download, with in-app purchases available.
Which has better reviews, MTA Shield or PDF Master?
MTA Shield is rated higher. MTA Shield averages 4.6 out of 5 from 14 ratings, while PDF Master averages 4.3 from 200 ratings.
Do MTA Shield or PDF Master have ads?
PDF Master shows ads; MTA Shield does not.
Which is updated more often, MTA Shield or PDF Master?
MTA Shield ships an update every 8 months, and PDF Master every 2 weeks. Most recently, MTA Shield was updated on August 16, 2026 and PDF Master on September 27, 2026.

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