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

Transform your living spaces with AI-powered design tools. Upload a room photo, select a style, and see instant real-time transformations. Explore endless customization and save your favorite creations.

Highlights
  • Instant room transformation
  • AI-powered design suggestions
  • Variety of design styles
  • Save and share designs
  • User-friendly interface
  • Explore design trends
Features
Read full description

Transform any space with a fresh new look using our app! Ready to give your home a fresh update but not sure where to start? Our app, powered by advanced AI, makes it easier than ever to breathe new life into your spaces. Simply take a photo of the room you want to refresh, choose from styles like modern, vintage, minimalist, or bohemian, and watch your room transform in real time. Whether you're reimagining an existing space or creating something entirely new, our app brings your vision to life. With its powerful AI, user-friendly features, and endless customization options, our app is your ultimate tool for transforming any space into a reflection of your personal style. Whether you're updating a single room or redesigning your entire home, the app empowers you to create spaces that are uniquely yours. Features: - Instant Room Transformation: Experience the magic of real-time design changes as your room evolves before your eyes. - Creative Inspiration: Dive into a vast library of design ideas and inspiration, helping you find the perfect style for your space. - Explore a Variety of Styles: From sleek modern to cozy vintage, minimalist simplicity to eclectic bohemian, explore and experiment with different aesthetics to find what resonates with you. - Stay Updated with Trends: Keep your spaces current by exploring the latest design trends and concepts, ensuring your home feels fresh and modern. - Save and Share Your Designs: Save your favorite room designs and easily share them with friends, family, or design professionals to get feedback or simply showcase your creativity. - User-Friendly Interface: Whether you're an interior design enthusiast or just starting, the app's intuitive interface makes the design process easy and enjoyable. Navigate through options with ease, and create your dream space with just a few taps. Subscribe for unlimited access to all app features. Subscription Details: - Payment is processed through your iTunes Account upon purchase confirmation. - Subscriptions renew automatically 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 before the end of the current period, with the renewal cost clearly indicated. - Users can manage their subscriptions and turn off auto-renewal in Account Settings after purchase. - Any unused portion of a free trial period, if offered, will be forfeited upon subscription purchase, where applicable. If you have any problems with the application or have any questions about the functionality, please contact us at amollmarcus@gmail.com. - Privacy Policy: https://docs.google.com/document/d/1gascgZV1s0aY0eOyIJtKan4Dnk3wIxC9iWa9xNiCKbg/edit?usp=sharing - Terms of Use: https://docs.google.com/document/d/18xAMQt1IRhnFu3kajLRZAWGbJDkBUmTDWHHciJZIjE8/edit?usp=sharing

Screenshots

PDF Scanner Document Converter4 screens
Authenticator App4 screens

Verdict

The call

The clearest difference is monetization model: PDF Scanner Document Converter at free with in-app purchases against Authenticator App's subscription. PDF Scanner Document Converter also leads on rating (4.5 vs 4.1) and ratings volume (534 vs 9). Authenticator App's advantage is ads (none vs shown) and update cadence (daily vs every 2 weeks). On price, in-app purchases, device support and iOS requirement 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 2 in-app purchases, starting at $6.99 per 7 days. Whichever you choose, the download price is not the number that matters.

ReceptionRating · Positive reviews · Number of ratings

PDF Scanner Document Converter holds the better App Store score, 4.5 against 4.1. That said, the two scores are not equally well evidenced: PDF Scanner Document Converter has 534 ratings behind it against 9, so its average is the more settled of the two. Written reviews complicate that: 32% of PDF Scanner Document Converter's written reviews are positive against 50% of Authenticator App's, so the app with the better star average is not the one people write more warmly about.

UpkeepUpdate frequency

PDF Scanner Document Converter ships an update every 2 weeks, Authenticator App daily. The most recent releases landed on September 20, 2026 and September 17, 2026 respectively.

Scorecard6 real differences · 4 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) — better4.1 (9 ratings)
Positive reviews31.9% of reviews50.0% of reviews — better
Number of ratings534 — better9
Update frequencyEvery 2 weeksDaily — better
AdsYesNo — better
In-app purchasesYesYes
MonetizationFree with in-app purchases — betterSubscription
DevicesiPhoneiPhone
Requires iOS16.016.0
Further details — not scored
Size148 MB13 MB
Age rating4+4+
Developer兰 陈Marvin Wimmer

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 ratings9 ratings
Positive77.8%
Neutral0.0%
Negative22.2%
Written reviews2 reviews
Positive50.0%
Neutral0.0%
Negative50.0%

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
2 purchases

Authenticator App

Subscriptions2
  • Weekly$6.997 Days
  • Weekly3 Days trial$6.997 Days

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 is rated higher. PDF Scanner Document Converter averages 4.5 out of 5 from 534 ratings, while Authenticator App averages 4.1 from 9 ratings.
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 daily. Most recently, PDF Scanner Document Converter was updated on September 20, 2026 and Authenticator App on September 17, 2026.

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