Comparison

Authenticator+ vs CRT Viewer & Convert PEM PFX

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

Head to head
About

Authenticator+

Read full description

Authenticator+ is no longer actively maintained. We've built its successor: Keylet โ€” 2FA Authenticator. Same makers, everything you're used to, but faster, fully private (nothing leaves your device), with passkey support and NO ads. Import your existing codes in one tap. Search "Keylet" on the App Store to make the switch.

About

CRT Viewer & Convert PEM PFX

Features
Read full description

The best offline CRT Viewer tool for all. Read CRT, CER (etc) convert PEM to PFX, or use the CSR generator to create a certificate signing request securely. No servers. Empower your IT workflow with the most secure and comprehensive certificate tool designed for professionals. Whether you are a system administrator, DevOps engineer, or developer, handling SSL certificates on mobile has never been easier or more secure. Our app works 100% offline, ensuring your sensitive private keys and company certificates never leave your device. > KEY FEATURES: โ€ข Advanced CRT Viewer & CER Viewer Instantly open, read, and inspect certificate details. Whether you need a reliable CRT viewer or a fast CER viewer, you can decode file contents, check expiration dates, and verify issuers locally without any internet connection. โ€ข Ultimate Certificate Converter Stop relying on insecure web tools. Easily perform complex conversions on the go: โ€ข Convert PEM to PFX (PKCS#12) โ€ข Convert CRT to PEM or PFX โ€ข Convert PFX to PEM โ€ข Seamlessly handle OpenSSL PFX conversions with a few taps. โ€ข Professional CSR Generator Need to request a new SSL certificate? Use our built-in CSR generator to create a certificate signing request directly from your phone. โ€ข Generate CSR OpenSSL compatible files instantly. โ€ข Create CSR and private keys simultaneously. โ€ข Easily export your CSR certificate and cert signing request to send to your Certificate Authority (CA). โ€ข WHY CHOOSE US? โ€ข 100% Offline & Secure: No cloud servers, no data logging. Your CSR security certificate and private keys are generated and stored strictly on your device. โ€ข OpenSSL Compatible: Generate a CSR using OpenSSL standards to ensure full compatibility with GoDaddy, DigiCert, and other major providers. โ€ข All-in-One IT Tool: From a simple SSL cert request to a complex CSR request for SSL certificate generation, everything you need is in your pocket. Take control of your digital security. Create a certificate request, view files, and convert formats with the ultimate offline tool for IT professionals.

Screenshots

Authenticator+4 screens
CRT Viewer & Convert PEM PFX4 screens

Verdict

The call

The clearest difference is in-app purchases: Authenticator+ at none against CRT Viewer & Convert PEM PFX's 3. Authenticator+ also leads on iOS requirement (13.0 vs 15.0). CRT Viewer & Convert PEM PFX's advantage is update cadence (every 11 days vs every 16 months) and device support (4 vs 2). On price and ads there is nothing between them.

Scored on Price ยท Rating ยท Positive reviews ยท Number of ratings ยท Update frequency ยท Ads ยท In-app purchases ยท Monetization ยท Best chart rank ยท Devices ยท Requires iOS

CostPrice ยท In-app purchases ยท Ads ยท Monetization

Both are free to download. CRT Viewer & Convert PEM PFX sells 3 in-app purchases, starting at $7.99 per 7 days. Authenticator+ asks for nothing beyond the download.

UpkeepUpdate frequency

Authenticator+ ships an update every 16 months, CRT Viewer & Convert PEM PFX every 11 days. The most recent releases landed on November 3, 2026 and October 31, 2026 respectively.

Scorecard4 real differences ยท 2 level
Authenticator+ versus CRT Viewer & Convert PEM PFX: the parameters behind the verdict, then further details
ParameterAuthenticator+CRT Viewer & Convert PEM PFX
PriceFreeFree
Update frequencyEvery 16 monthsEvery 11 days โ€” better
AdsYesYes
In-app purchasesNo โ€” betterYes
DevicesiPhone, iPodiPhone, iPad, iPod, Mac โ€” better
Requires iOS13.0 โ€” better15.0
Further details โ€” not scored
Size20 MB23 MB
Age rating4+4+
DeveloperStudio FifteenOMER FARUK KIZILTUG

In-app purchases

None

Authenticator+

No in-app purchases

3 purchases

CRT Viewer & Convert PEM PFX

Subscriptions2
  • Weekly Premium3 Days trial$7.997 Days
  • Yearly Premium$49.991 Year
One-time1
  • Lifetime Access$89.99

Questions

Is Authenticator+ free?
Authenticator+ is free to download, with no in-app purchases.
Is CRT Viewer & Convert PEM PFX free?
CRT Viewer & Convert PEM PFX is free to download, with in-app purchases available.
Do Authenticator+ or CRT Viewer & Convert PEM PFX have ads?
Both Authenticator+ and CRT Viewer & Convert PEM PFX show ads.
Which is updated more often, Authenticator+ or CRT Viewer & Convert PEM PFX?
Authenticator+ ships an update every 16 months, and CRT Viewer & Convert PEM PFX every 11 days. Most recently, Authenticator+ was updated on November 3, 2026 and CRT Viewer & Convert PEM PFX on October 31, 2026.

Other comparisons