Comparison

PDF Scanner Document Converter vs Authenticator App

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

Head to head
About

PDF Scanner Document Converter

Transform your phone into a portable scanner to digitize any document. Easily capture receipts, notes, or reports, save them as PDFs, and organize them with custom titles. Share your scanned files via email or save them for later printing.

Highlights
  • Scan any document
  • Save as PDF
  • Organize with titles
  • Automatic scanning
  • High-quality output
  • Share via email
  • Save to gallery
Features
Read full description

Scan Master turns your iPhone into a document scanner, PDF converter, and OCR text reader. Scan paper to PDF in seconds, convert it to Word, JPG, or TXT, then sign, annotate, and share. Contracts, invoices, receipts, tax returns, medical records, notes, textbook pages. Everything stays sharp and organized. Get perfect scans - AI Enhanced clears shadows, glare, and desk lamp reflections, so a page shot in a normal room still comes out clean - Straighten fixes the angle for you, no lining the page up perfectly or holding the phone flat - Switch between color, grayscale, and high-contrast black and white depending on what you are scanning - Set the look once and apply it to the whole document instead of page by page Multi-language text recognition - Pull the text out of a scan so you can search, copy, and reuse it instead of retyping the page - Detects the language for you, or pick one yourself - Fix a typo or reformat the result before you send it, right inside the app - Copy it as plain text, or export as PDF, DOC, or TXT Sign and mark up without printing - Sign a contract and send it back in a minute, no printer, no scanner, no trip to the office - Draw your signature once and reuse it on everything after that - Highlight the clause that matters, or leave a note for whoever reads it next - Add a stamp or your own watermark before the file leaves your phone Export in the format you need - PDF to file it, JPG to share it, DOC or TXT when you still need to edit it - Send only the pages that matter instead of the whole document - Adjust size and quality so the file is small enough to email - Straight out to email, AirDrop, print, or Files Your documents stay on your device Tax returns, contracts, medical records, and ID documents are not the kind of files that belong on someone else's server. Scan Master scans, processes, and stores everything locally on your iPhone. - Your documents are never uploaded, and no account is required - Text recognition runs on your iPhone, not in the cloud - Lock individual documents behind a password - Add encryption to any file before you export it Scan Master Premium Scan Master is free to use. Premium unlocks batch file import, watermark-free export, file encryption, OCR result export, and advanced editing: signatures, markup, comments, stamps, and custom watermarks. Free users can export one page at a time with a Scan Master watermark. Selecting multiple pages requires Premium. Privacy Policy: https://scanmaster.io/scan-master-privacy-policy.html Terms of Use: https://scanmaster.io/scan-master-terms-conditions.html Questions or suggestions? Email us at getsupport@scanmaster.io.

About

Authenticator App

Enhance digital security with a multi-factor authenticator app. It provides an extra layer of protection for sensitive accounts and information, working offline for reliable access. Protect email, social media, financial accounts, and more with this user-friendly solution.

Highlights
  • Multi-factor authentication
  • Offline 2FA code generation
  • Wide service integration
  • User-friendly interface
  • Enhanced account protection
Features
Read full description

Enhance the security of your digital life with the Multi-factor Authenticator. Our app is designed to provide you with an additional layer of protection, ensuring that your sensitive accounts and information remain safe from unauthorized access. Whether you're a business professional, a tech-savvy individual, or simply someone who values their online privacy, Multi-factor Authenticator is your trusted companion in the world of cybersecurity. Protect your email, social media, financial accounts, and more. multi-factor Authenticator is your reliable, user-friendly solution, making it effortless to implement two-factor authentication across various online platforms. - Multi-factor Authenticator effortlessly integrates with a wide range of online services and accounts. Whether you're securing your email, social media, or cloud storage, our app supports popular platforms and is continually expanding its compatibility - The app's intuitive and user-friendly interface makes it easy for both tech-savvy individuals and newcomers to 2FA. No technical expertise is required to set up and use this powerful security tool - Don't rely on an internet connection for your 2FA codes. Multi-factor Authenticator works offline, ensuring your security is never compromised, even in challenging network conditions Subscription terms: - Payment will be charged to your Apple ID account at the confirmation of purchase - Your account will be charged for renewal within 24 hours prior to the end of the current period - You can manage and cancel your subscriptions by going to your account settings on the App Store after purchase - After the free trial period, if offered, the subscription automatically renews with the price and duration given above unless it is canceled at least 24 hours before the end of the current period - 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://apperture.neocities.org/authenticator/apple/privacy Terms of Use: https://apperture.neocities.org/authenticator/apple/terms

Screenshots

PDF Scanner Document Converter4 screens
Authenticator App3 screens

Verdict

The call

The clearest difference is ads: Authenticator App at none against PDF Scanner Document Converter's shown. PDF Scanner Document Converter's advantage is review sentiment (32% vs 0%) and ratings volume (534 vs 24). On price, rating, update cadence 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. PDF Scanner Document Converter sells 5 in-app purchases, starting at $9.99 per month and Authenticator App sells 4 in-app purchases, starting at $4.99 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 — 4.5 for PDF Scanner Document Converter against 4.5 for Authenticator App. That said, the two scores are not equally well evidenced: PDF Scanner Document Converter has 534 ratings behind it against 24, so its average is the more settled of the two. Written reviews are what separate them: 32% of PDF Scanner Document Converter's written reviews are positive against 0% of Authenticator App's.

UpkeepUpdate frequency

PDF Scanner Document Converter ships an update every 2 weeks, Authenticator App monthly. Both last shipped on September 29, 2026.

Scorecard3 real differences · 7 level
PDF Scanner Document Converter versus Authenticator App: the parameters behind the verdict, then further details
ParameterPDF Scanner Document ConverterAuthenticator App
PriceFreeFree
Rating4.5 (534 ratings)4.5 (24 ratings)
Positive reviews31.9% of reviews — better0.0% of reviews
Number of ratings534 — better24
Update frequencyEvery 2 weeks — betterMonthly
AdsYesNo — better
In-app purchasesYesYes
MonetizationFree with in-app purchasesFree with in-app purchases
DevicesiPhoneiPhone, iPod — better
Requires iOS16.015.0 — better
Further details — not scored
Size148 MB101 MB
Age rating4+4+
Developer兰 陈Apperture Limited

Customer experience

PDF Scanner Document Converter

All ratings534 ratings
Positive87.8%
Neutral3.2%
Negative9.0%
Written reviews47 reviews
Positive31.9%
Neutral0.0%
Negative68.1%

Authenticator App

All ratings24 ratings
Positive91.7%
Neutral0.0%
Negative8.3%
Written reviews2 reviews
Positive0.0%
Neutral0.0%
Negative100.0%

Bugs and requests

PDF Scanner Document Converter

Reported bugs

6 issues
  • App crashes on launch
  • Scan quality is unreadable
  • App keeps asking to sign up despite active account
  • Files not emailing properly
  • Incompatibility with iPhone 5S
Show 1 more
  • Scanning fails to process documents

Requested features

4 requests
  • Easy in-app cancellation option
  • Color scan option
  • Genuine free trial without credit card requirement
  • Better customer support channels

Authenticator App

Not enough reviews yet to summarise bugs or requests.

In-app purchases

5 purchases

PDF Scanner Document Converter

Subscriptions5
  • Monthly Plan7 Days trial$9.991 Month
  • PDF Scanner Converter$9.997 Days
  • Weekly Plan3 Days trial$9.997 Days
Show 2 more
  • PDF Document Scanner3 Days trial$59.991 Year
  • Document Scanner App$69.991 Year
4 purchases

Authenticator App

Subscriptions4
  • Pro Version$4.997 Days
  • Pro Version3 Days trial$7.997 Days
  • Pro Version$14.991 Month
Show 1 more
  • Pro Version7 Days trial$39.991 Year

Questions

Is PDF Scanner Document Converter free?
PDF Scanner Document Converter is free to download, with in-app purchases available.
Is Authenticator App free?
Authenticator App is free to download, with in-app purchases available.
Which has better reviews, PDF Scanner Document Converter or Authenticator App?
PDF Scanner Document Converter and Authenticator App are both rated 4.5 out of 5 on the App Store, from 534 and 24 ratings respectively.
Do PDF Scanner Document Converter or Authenticator App have ads?
PDF Scanner Document Converter shows ads; Authenticator App does not.
Which is updated more often, PDF Scanner Document Converter or Authenticator App?
PDF Scanner Document Converter ships an update every 2 weeks, and Authenticator App monthly. Most recently, PDF Scanner Document Converter was updated on September 29, 2026 and Authenticator App on September 29, 2026.

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