Comparison

FreeOTP Authenticator vs Pdf24

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

Head to head
About

FreeOTP Authenticator

Generate one-time passwords for enhanced online account security. This app creates temporary codes that, when used with your regular password, significantly strengthen your login protection. It functions even without an internet connection.

Highlights
  • Generates one-time passwords
  • Works offline (airplane mode)
  • Supports Google, Facebook, GitHub, etc.
  • Compatible with TOTP/HOTP protocols
  • Open source software
Read full description

FreeOTP adds a second layer of security for your online accounts. This works by generating one-time passwords on your mobile devices which can be used in conjunction with your normal password to make your login nearly impossible to hack. These passwords can be generated even when your phone is in airplane mode. FreeOTP works with many of the great online services you already use, including Google, Facebook, Evernote, GitHub and many more! FreeOTP also may work for your private corporate security if they implement the standardized TOTP or HOTP protocols. This includes great enterprise solutions like FreeIPA. FreeOTP is open source and free software! Licensed under the Apache 2.0 license, you can obtain the source code for FreeOTP at https://fedorahosted.org/freeotp for review or modification. Contributions are welcome!

About

Pdf24

Transform your device into a high-quality document scanner. Easily capture, organize, and share PDFs of receipts, invoices, and important papers. Features smart cropping and enhancement for better readability.

Highlights
  • Scan documents with camera
  • Create high-quality PDFs
  • Auto edge detection and cropping
  • Enhance scan readability
  • Organize and share documents
  • Secure document management
Features
Read full description

Turn your device into a powerful document scanner with Pdf24 App. Pdf24 helps you quickly scan, save, organize, and share documents in high quality. Whether you need to scan receipts, notes, invoices, contracts, business cards, IDs, or important documents, Pdf24 makes the process simple and efficient. Features: • Scan documents with your camera • Create high-quality PDF files • Auto edge detection and smart cropping • Enhance scans for better readability • Organize documents easily • Share PDFs instantly • Fast and user-friendly interface • Secure document management • Scan receipts, invoices, notes, and more Perfect for students, professionals, businesses, and anyone who needs a reliable document scanning solution on the go. Download Pdf24 App and keep your documents organized anytime, anywhere. In-App Purchase: Weekly Subscription Monthly Subscription Yearly Subscription The subscription will automatically renew unless turned off in your iTunes Account Settings at least 24 hours before the current period ends. You can go to your iTunes account settings to manage your subscription and turn off auto-renew. Your iTunes account will be charged when the purchase is confirmed. Link to Privacy Policy: https://doczyo.blogspot.com/2026/06/privacy-policy.html Link to Terms of use: https://doczyo.blogspot.com/2026/06/terms-and-conditions.html Link to EULA: https://doczyo.blogspot.com/2026/06/eula.html

Screenshots

FreeOTP Authenticator2 screens
Pdf244 screens

Verdict

The call

The clearest difference is rating: FreeOTP Authenticator at 3.2 against Pdf24's 2.3. FreeOTP Authenticator also leads on review sentiment (37% vs 0%) and in-app purchases (none vs 2). Pdf24's advantage is update cadence (monthly vs every 6 months). On price 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. Pdf24 sells 2 in-app purchases, starting at $9.99 per 7 days. FreeOTP Authenticator asks for nothing beyond the download.

ReceptionRating · Positive reviews · Number of ratings

FreeOTP Authenticator holds the better App Store score, 3.2 against 2.3. That said, the two scores are not equally well evidenced: FreeOTP Authenticator has 173 ratings behind it against 3, so its average is the more settled of the two. Written reviews point the same way: 37% of FreeOTP Authenticator's written reviews are positive against 0% of Pdf24's.

UpkeepUpdate frequency

FreeOTP Authenticator ships an update every 6 months, Pdf24 monthly. The most recent releases landed on September 27, 2026 and September 24, 2026 respectively.

Scorecard9 real differences · 1 level
FreeOTP Authenticator versus Pdf24: the parameters behind the verdict, then further details
ParameterFreeOTP AuthenticatorPdf24
PriceFreeFree
Rating3.2 (173 ratings) — better2.3 (3 ratings)
Positive reviews37.0% of reviews — better0.0% of reviews
Number of ratings173 — better3
Update frequencyEvery 6 monthsMonthly — better
AdsNo — betterYes
In-app purchasesNo — betterYes
MonetizationFree — betterFree with in-app purchases
DevicesiPhone, iPad, iPod — betteriPhone
Requires iOS11.0 — better17.0
Further details — not scored
Size11 MB23 MB
Age rating4+4+
DeveloperRed HatPriyankaben Rupavatiya

Customer experience

FreeOTP Authenticator

All ratings173 ratings
Positive49.1%
Neutral9.8%
Negative41.0%
Written reviews189 reviews
Positive37.0%
Neutral10.6%
Negative52.4%

Pdf24

All ratings3 ratings
Positive33.3%
Neutral0.0%
Negative66.7%
Written reviews2 reviews
Positive0.0%
Neutral0.0%
Negative100.0%

Bugs and requests

FreeOTP Authenticator

Reported bugs

3 issues
  • Camera not working for QR code scanning
  • App crashing on launch or when unlocking accounts
  • UI issues on larger iOS devices

Requested features

4 requests
  • Add ability to manually enter account details
  • Implement iCloud/cloud backup sync
  • Allow renaming and deleting of accounts
  • Provide Apple Watch support

Pdf24

Not enough reviews yet to summarise bugs or requests.

In-app purchases

None

FreeOTP Authenticator

No in-app purchases

2 purchases

Pdf24

Subscriptions1
  • Weekly$9.997 Days
One-time1
  • Lifetime$24.99

Questions

Is FreeOTP Authenticator free?
FreeOTP Authenticator is free to download, with no in-app purchases.
Is Pdf24 free?
Pdf24 is free to download, with in-app purchases available.
Which has better reviews, FreeOTP Authenticator or Pdf24?
FreeOTP Authenticator is rated higher. FreeOTP Authenticator averages 3.2 out of 5 from 173 ratings, while Pdf24 averages 2.3 from 3 ratings.
Do FreeOTP Authenticator or Pdf24 have ads?
Pdf24 shows ads; FreeOTP Authenticator does not.
Which is updated more often, FreeOTP Authenticator or Pdf24?
FreeOTP Authenticator ships an update every 6 months, and Pdf24 monthly. Most recently, FreeOTP Authenticator was updated on September 27, 2026 and Pdf24 on September 24, 2026.

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