Comparison

Merge files PDF vs Authtify

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

Head to head
About

Merge files PDF

Combine multiple PDF documents into a single file with ease. Select your desired PDFs and merge them quickly. Unlock advanced features like sharing, renaming, and unlimited merging with a premium subscription.

Highlights
  • Merge multiple PDF files
  • Easy to use interface
  • Display merged PDF
  • Share merged PDF
  • Rename merged PDF
  • Unlimited merging (premium)
Features
Read full description

merge pdf files. easy use and you can merge multi file pdf. how to use : Select multi file pdf from files and merge . features : you can after merge and subscription (Display file pdf ,Share file pdf , rename ). - - - - - - - - - - - Premium unlimited subscription : - With Premium unlimited subscription, you have access to all features (share file , rename files, unlimited merge pdf files). - Premium unlimited subscription is billed weekly or monthly or annually at the rate corresponding to selected plan . - Payment will be charged to iTunes account at confirmation of purchase. - Subscription automatically renew unless auto-renew is turned off at least 24-hours before the end of the current period. - Subscription may be managed by the user and auto-renewal may be turned off by going to the user’s account settings after purchase. - Terms of Use https://sites.google.com/view/mergepdf-home - Privacy Policy https://sites.google.com/view/dev-abdullah-apps Fell free to contact us : dev.abadi2015@gmail.com Your problem or suggestions are important to us!

About

Authtify

Features
Read full description

Authtify is an identity validator that can receive verification requests online and verify whether they are approved or rejected. Use Authtify authentication, send verification requests online, verify in real time, and protect the security of your account data information. Based on OTP technology, when users perform authentication, Authtify authentication is triggered in a third-party application. After logging into Authtify with an account and password, real-time online authentication requests are initiated. Authtify users can directly click pass or reject, enter the set PIN code, and complete Authtify authentication. Authtify validation supports biological validation methods to pass validation. Users can enable biometric authentication in the account and security settings of the Authtify application. When receiving real-time authentication requests, Authtify users can authenticate through the biometric authentication method set by the device, recognize through Face ID and Touch ID, and ensure that only you have access to the application, ensuring your data privacy and operational security. Authtify supports blacklisting verification applications and application verification accounts. After blacklisting, applications will be placed on a blacklist, and accounts under subsequent applications will not be allowed to undergo Authtify verification. Once the blacklisting is lifted, verification can resume normal use. A simple and intuitive interface makes it easy for users to use, and provides home page shortcut application customization settings, making it convenient for users to operate quickly.

Screenshots

Merge files PDF4 screens
Authtify4 screens

Verdict

The call

The clearest difference is in-app purchases: Authtify at none against Merge files PDF's 3. On price, update cadence, ads and device support 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. Merge files PDF sells 3 in-app purchases, starting at $0.99 per 7 days. Authtify asks for nothing beyond the download.

UpkeepUpdate frequency

Merge files PDF ships an update every 2 weeks, Authtify every 3 weeks. The most recent releases landed on September 23, 2026 and May 18, 2026 respectively.

Scorecard1 real difference · 9 level
Merge files PDF versus Authtify: the parameters behind the verdict, then further details
ParameterMerge files PDFAuthtify
PriceFreeFree
Rating4.6 (339 ratings) — better—
Positive reviews25.7% of reviews—
Number of ratings339 — better—
Update frequencyEvery 2 weeks — betterEvery 3 weeks
AdsNoNo
In-app purchasesYesNo — better
MonetizationFreemium—
DevicesiPhone, iPad, iPodiPhone, iPad, iPod
Requires iOS13.013.0
Further details — not scored
Size3 MB38 MB
Age rating4+17+
DeveloperAbdullah AlbalawiByteflux

Bugs and requests

Merge files PDF

Reported bugs

2 issues
  • Subscription issues
  • Incompatible with free usage

Requested features

2 requests
  • Allow free sharing and saving of merged files
  • Improve free functionality

Authtify

Not enough reviews yet to summarise bugs or requests.

In-app purchases

3 purchases

Merge files PDF

Subscriptions3
  • weekly subscription$0.997 Days
  • monthly subscription$3.991 Month
  • yearly subscription$14.991 Year
None

Authtify

No in-app purchases

Questions

Is Merge files PDF free?
Merge files PDF is free to download, with in-app purchases available.
Is Authtify free?
Authtify is free to download, with no in-app purchases.
Do Merge files PDF or Authtify have ads?
Neither Merge files PDF nor Authtify shows ads.
Which is updated more often, Merge files PDF or Authtify?
Merge files PDF ships an update every 2 weeks, and Authtify every 3 weeks. Most recently, Merge files PDF was updated on September 23, 2026 and Authtify on May 18, 2026.

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