Comparison

Authenticator App vs ResizerTools

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

Head to head
About

Authenticator App

Secure your online accounts with this 2FA OTP manager. It offers easy account setup via QR code scanning or manual entry, and enhances security with biometric authentication. All one-time passwords are stored locally on your device for increased protection.

Highlights
  • 2FA OTP management
  • QR code scanning for account setup
  • Manual code entry
  • Biometric unlock (fingerprint/face recognition)
  • Local storage of OTPs
  • Supports numerous platforms
Read full description

Introducing Authenticator - The Ultimate 2FA OTP Manager. Unmatched protection in just a tap! Authenticator - 2FA App is a highly recommended free 2FA app used for securing your accounts on different platforms such as Instagram, Google, Facebook, Github, Twitter, X, Binance, Salceforce, and many more. Scan QR Code: Effortlessly add your accounts by scanning QR codes. No more manual entry or hassle. Manual Code Entry: Easily enter authentication codes manually for added flexibility. Biometrics Integration: Unlock the app effortlessly with your fingerprint or face recognition for enhanced security. No Password Stored: The Authenticator application generates Time-based One-time Passwords (TOTP), stored on the user's phone without internet access. This solution dramatically increases login security. For a safe and secure experience try the application NOW! Privacy Policy: https://sites.google.com/view/authenticator-policy/privacy-policy Terms of Use: https://sites.google.com/view/authenticator-policy/terms-of-use

About

ResizerTools

Features
Read full description

Picture this: You're on the move, and an urgent contract lands in your inbox. You need to sign it, compress it so it fits under the email size limit, and send it back immediately. Or maybe you have ten scattered receipts and photos that need to become a single, professional PDF report before your meeting starts. In the past, this meant booting up a slow computer or uploading sensitive personal files to sketchy websites. Not anymore. Meet ResizerTools - your pocket-sized, lightning-fast PDF studio designed to give you complete mastery over your documents anywhere, anytime. CHAPTER 1: EFFORTLESS READING & VIEWING Open any PDF instantly. Whether it's a 2-page invoice or a 500-page eBook, ResizerTools delivers buttery-smooth scrolling, instant search, and crystal-clear rendering. Protect your confidential documents with Face ID and Touch ID so only your eyes can see them. CHAPTER 2: EDIT, MERGE & REORGANIZE IN SECONDS Never feel trapped by fixed documents again. - Combine & Merge: Take scattered PDFs, forms, or notes and merge them into one seamless document. - Split & Extract: Pick out only the exact pages you need and save them as a clean new file. - Reorder, Rotate & Delete: Fix upside-down scanned pages, drag-and-drop to reorder pages, and delete unwanted sheets with a single swipe. CHAPTER 3: SHRINK FILE SIZES, NOT QUALITY Hitting the email attachment size limit? Our intelligent PDF Compressor dramatically reduces file sizes while keeping your text razor-sharp and images crisp. Send contracts, reports, and portfolios effortlessly. CHAPTER 4: SIGN & PROTECT ON THE FLY Turn your phone into an executive signing desk. Draw your digital signature with natural touch precision, place it anywhere on your page, and add customizable text watermarks for copyright protection. Lock documents with military-grade passwords or unlock password-protected files when needed. CHAPTER 5: CONVERT ANYTHING TO PDF (AND BACK) - Turn photos, camera scans, and gallery images into high-resolution PDFs. - Convert Word, Excel, and PowerPoint documents into universally shareable PDFs. - Extract high-clarity PNG/JPG images from your PDF pages. - Smart OCR Text Recognition: Extract editable text from printed papers and images in seconds. THE RESIZERTOOLS PRIVACY PROMISE We believe your documents belong to you - and only you. ResizerTools operates on an offline-first architecture. All PDF merging, compression, and conversions happen directly on your device. Your sensitive data is never uploaded to remote servers. UPGRADE TO RESIZERTOOLS PRO: Unlock unlimited batch processing, advanced compression levels, custom watermarking, and an uninterrupted, ad-free experience. Subscription details: - Payment will be charged to your Apple ID 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. - Subscriptions may be managed and auto-renewal turned off by going to your Account Settings after purchase. - Privacy Policy: https://resizertools.com/privacy - Terms of Use: https://resizertools.com/terms - Support: https://resizertools.com/support

Screenshots

Authenticator App4 screens
ResizerTools4 screens

Verdict

The call

The clearest difference is ads: Authenticator App at none against ResizerTools's shown. Authenticator App also leads on device support (4 vs 2). ResizerTools's advantage is update cadence (weekly vs every 2 weeks). On price, in-app purchases 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. Authenticator App sells 6 in-app purchases, starting at $4.19 per 7 days and ResizerTools sells 2 in-app purchases, starting at $1.99 per month. Whichever you choose, the download price is not the number that matters.

UpkeepUpdate frequency

Authenticator App ships an update every 2 weeks, ResizerTools weekly. The most recent releases landed on October 2, 2026 and October 5, 2026 respectively.

Scorecard3 real differences · 7 level
Authenticator App versus ResizerTools: the parameters behind the verdict, then further details
ParameterAuthenticator AppResizerTools
PriceFreeFree
Rating4.4 (86 ratings) — better—
Positive reviews28.6% of reviews—
Number of ratings86 — better—
Update frequencyEvery 2 weeksWeekly — better
AdsNo — betterYes
In-app purchasesYesYes
MonetizationFree with in-app purchases—
DevicesiPhone, iPad, iPod, Mac — betteriPhone, iPad
Requires iOS15.6 — better16.6
Further details — not scored
Size106 MB14 MB
Age rating4+4+
DeveloperTatsat BrahmbhattSAURABH KUMAR SHARMA

In-app purchases

6 purchases

Authenticator App

Subscriptions4
  • Weekly$4.197 Days
  • Weekly$9.997 Days
  • Yearly$29.491 Year
Show 1 more
  • Yearly$53.901 Year
One-time2
  • Lifetime$59.99
  • Lifetime$79.99
2 purchases

ResizerTools

Subscriptions2
  • Premium Monthly$1.991 Month
  • Premium Yearly$12.991 Year

Questions

Is Authenticator App free?
Authenticator App is free to download, with in-app purchases available.
Is ResizerTools free?
ResizerTools is free to download, with in-app purchases available.
Do Authenticator App or ResizerTools have ads?
ResizerTools shows ads; Authenticator App does not.
Which is updated more often, Authenticator App or ResizerTools?
Authenticator App ships an update every 2 weeks, and ResizerTools weekly. Most recently, Authenticator App was updated on October 2, 2026 and ResizerTools on October 5, 2026.

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