Comparison

ClearSign vs Secure Authenticator

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

Head to head
About

ClearSign

Transform your device into a powerful PDF scanner and editor. Easily fill out forms, create digital signatures from your handwriting, and manage important documents on the go. Streamline your paperwork with scanning, signing, and editing tools in one place.

Highlights
  • PDF scanning with automatic edge detection
  • Create digital signatures from handwriting
  • Fill and sign PDF documents
  • Add text, dates, and stamps
  • Edit PDF pages and add annotations
  • Organize and manage documents
Features
Read full description

Sign any PDF in seconds: tap where you want to sign, and your signature lands right there. Fill in forms, scan paper contracts and send documents out for signature, all from your iPhone. SIGN DOCUMENTS FAST • Tap anywhere on the page to place your signature, initials or date • Drag, resize and rotate to line it up perfectly on the signature line • Sign contracts, leases, offer letters, invoices, NDAs and permission slips • Share the signed PDF or save it to Files when you're done CREATE YOUR SIGNATURE YOUR WAY • Draw it with your finger • Type your name and pick from six handwriting styles • Scan a signature written on paper; the background is removed automatically • Save several signatures and initials, ready whenever you sign FILL FORMS • Fill in PDF form fields, checkboxes and radio buttons • Add text, dates, checkmarks and stamps anywhere on the page • Save your name, email and company once and insert them with one tap SEND FOR SIGNATURE • Email a document to the people who need to sign it • Add a message and a reply-by date • See which documents are still waiting and send a reminder • Mark a document completed when the signed copy comes back SCAN PAPER TO PDF • Scan contracts and receipts with your camera • Automatic edge detection and perspective correction • Open the scan straight away to sign it EVERY PDF TOOL YOU NEED • Merge, split, compress and rotate PDFs • Reorder, delete and insert pages • Add watermarks and page numbers • Protect a PDF with a password, or remove one from a file you own • Convert PDF to Word, Excel, PowerPoint, images or text • Turn photos and Word, Excel or PowerPoint files into PDFs YOUR DOCUMENTS, ON YOUR DEVICE Your documents and signatures are stored on your iPhone, with optional iCloud sync. PDF conversion and text recognition run on your device. Available in English, Arabic, Chinese (Simplified), Dutch, French, German, Hebrew, Hindi, Japanese, Korean, Portuguese, Russian, Spanish and Turkish. CLEARSIGN PRO ClearSign is free to use with daily limits and ads. ClearSign Pro removes the limits and the ads and unlocks every tool. Choose a weekly, monthly or yearly plan. The yearly plan starts with a 7-day free trial and the monthly plan with a 3-day free trial. Prices are shown in the app before you subscribe and may vary by region. Payment is charged to your Apple ID account at confirmation of purchase. The subscription automatically renews unless it is canceled at least 24 hours before the end of the current period, and your account is charged for renewal within 24 hours before the end of the period. You can manage and cancel your subscription in your App Store account settings after purchase. Any unused portion of a free trial is forfeited when you purchase a subscription. Terms of Use: https://aprstudiodev.com/terms-of-use.html Privacy Policy: https://aprstudiodev.com/privacy-policy.html

About

Secure Authenticator

This app provides robust two-factor authentication (2FA) to safeguard your online accounts and sensitive data from cyber threats. It offers a straightforward way to manage authentication tokens and secure your logins with ease.

Highlights
  • Generate 2FA tokens
  • Manage authentication tokens
  • Secure login protection
  • Encrypted backups
  • Sync tokens across devices
  • Password management
Features
Read full description

Simple app that allows you to enable two-factor authentication (2FA) to protect your online accounts and personal data from cyber threats. With just one app, you can easily secure your logins. Key Features: Free Features: Generate 2FA tokens to secure your accounts. Easy-to-use interface for managing authentication tokens. Paid Features (Available with Auto-Renewable Subscription): Backup & Sync: Create secure, encrypted backups and automatically sync tokens across devices. Password Protection: Securely store and manage your account passwords, protected by a single master password known only to you. Subscription Information: Payment is charged to your iTunes account upon purchase confirmation. Subscriptions automatically renew unless auto-renewal is turned off at least 24 hours before the end of the current period. Renewal charges are applied within 24 hours prior to the end of the current period, with costs depending on the chosen plan. Manage your subscriptions and disable auto-renewal through your Account Settings after purchase. Privacy Policy: https://docs.google.com/document/d/1OPybhDMBeDmOMDBVSCvyr_HM75kwzeHxIx28RHjTHEE/edit?usp=sharing Terms of Use: https://docs.google.com/document/d/1dEyRCMh8sbfK70p0i6-i4upVJytLfeqzlhVbfwgUdX4/edit?usp=sharing

Screenshots

ClearSign4 screens
Secure Authenticator4 screens

Verdict

The call

The clearest difference is ads: Secure Authenticator at none against ClearSign's shown. Secure Authenticator also leads on update cadence (every 2 days vs every 9 days). ClearSign's advantage is rating (5.0 vs 4.6). On price, ratings volume, in-app purchases and monetization model 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. ClearSign sells 8 in-app purchases, starting at $0.99 per 7 days and Secure Authenticator sells 3 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

ClearSign holds the better App Store score, 5.0 against 4.6. Both are backed by a comparable volume of ratings — 4 and 8 respectively.

UpkeepUpdate frequency

ClearSign ships an update every 9 days, Secure Authenticator every 2 days. Both last shipped on October 24, 2026.

Scorecard3 real differences · 7 level
ClearSign versus Secure Authenticator: the parameters behind the verdict, then further details
ParameterClearSignSecure Authenticator
PriceFreeFree
Rating5.0 (4 ratings) — better4.6 (8 ratings)
Positive reviews—100.0% of reviews
Number of ratings48 — better
Update frequencyEvery 9 daysEvery 2 days — better
AdsYesNo — better
In-app purchasesYesYes
MonetizationFree with in-app purchasesFreemium
DevicesiPhone, iPad — betteriPhone
Requires iOS16.4 — better16.6
Further details — not scored
Size33 MB92 MB
Age rating17+17+
DeveloperElevate Mobile Group LLCBagrat Nozadze

Customer experience

ClearSign

All ratings4 ratings
Positive100.0%
Neutral0.0%
Negative0.0%

Secure Authenticator

All ratings6 ratings
Positive100.0%
Neutral0.0%
Negative0.0%
Written reviews1 reviews
Positive100.0%
Neutral0.0%
Negative0.0%

In-app purchases

8 purchases

ClearSign

Subscriptions6
  • 1 Week Subscription$0.997 Days
  • 1 Week Subscription$1.997 Days
  • 1 Month Subscription3 Days trial$2.991 Month
Show 3 more
  • 1 Month Subscription$2.991 Month
  • 1 Year Subscription$24.991 Year
  • 1 Year Subscription7 Days trial$29.991 Year
One-time2
  • Lifetime Purchase$49.99
  • Lifetime Purchase$79.99
3 purchases

Secure Authenticator

Subscriptions3
  • Weekly Premium3 Days trial$6.997 Days
  • Monthly Premium$19.991 Month
  • Annual Premium$49.991 Year

Questions

Is ClearSign free?
ClearSign is free to download, with in-app purchases available.
Is Secure Authenticator free?
Secure Authenticator is free to download, with in-app purchases available.
Which has better reviews, ClearSign or Secure Authenticator?
ClearSign is rated higher. ClearSign averages 5.0 out of 5 from 4 ratings, while Secure Authenticator averages 4.6 from 8 ratings.
Do ClearSign or Secure Authenticator have ads?
ClearSign shows ads; Secure Authenticator does not.
Which is updated more often, ClearSign or Secure Authenticator?
ClearSign ships an update every 9 days, and Secure Authenticator every 2 days. Most recently, ClearSign was updated on October 24, 2026 and Secure Authenticator on October 24, 2026.

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