Comparison

RFCReader Pro vs File Guard Pro

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

Head to head
About

RFCReader Pro

Access and read technical internet standards documents efficiently. Features include keyword search, bookmarking, text styling, and offline reading. Supports PDF and HTML formats with navigation aids.

Highlights
  • List all RFC documents
  • Search RFC by keywords or number
  • Add RFC to favorites
  • Mark and style text
  • Offline RFC reading
  • Read RFC in PDF and HTML formats
  • Navigate via Table of Contents and thumbnails
Features
Read full description

Requests for Comments (RFC) document series contain technical and organizational notes about the Internet. RFC Reader plus is a tool which can provide user a more efficient way to read the RFC documents.  Difference between trial version and full functional version: Features for RFC Reader plus trial version and full functional version are almost the same, except that some advance feature in trial version can be used with limitation. All features below are available for try with limited times with trial version and are fully supported by full functional version if user purchased the product in the app. 1. List all RFC documents 2. Search RFC File by Keywords or RFC number 3. Add to favorite for the interested RFC 4. Support marking text with color when reading in text format 5. Support adding Bold, Itatic and Underline styles to RFC text when reading in text format 6. Support changing default Font name and Font size for RFC text reading 7. Support fast navigating to last reading position and can go back and forward several times 8. Support fast navigating with Table Of Contents (TOC) 9. Offline RFC reading: Once you read it once, it will be cached locally 10. Save your changes to the document in Document folder 11.Support both Landscape and Portrait reading mode on all supported devices. 12. Support cleaning up cached files 13. Support search by keywords in Text format RFC page and navigate to the found results 14. Support read RFC in PDF format 15. Support searching RFC content when reading in PDF format 16. Support navigate RFC content through Table Of Content when reading in PDF format 17. Support navigate RFC content through PDF thumbnail 18. Support view RFC content in thumbnail grid view 19. Support read RFC in HTML format 20. Support navigate back and forth when reading in HTML format 21.Support navigate through Table Of Content when reading in HTML format for some RFCs 22. Support add to favorite RFC list when reading both in PDF format and HTML format 23. Support system Dark Mode

About

File Guard Pro

Securely encrypt and decrypt your files with this powerful cryptography tool. It offers a user-friendly interface for protecting confidential information quickly and efficiently. Based on a customized, reliable algorithm, it provides stronger security than many public tools.

Highlights
  • File encryption
  • File decryption
  • Customized cryptography algorithm
  • User-friendly interface
  • Fast performance
  • Confidential information security
Features
Read full description

This is the iOS version of File Encryptor Pro, the app is a small general purpose cryptography tool that can be used to encrypt and decrypt files. The app was based on a customised stable and reliable cryptography algorithm, that guarantees it more stronger than well-known public cryptography algorithm based tools, and helps user ensure confidential informations is secure, easy to use and fast. Only requires several taps in daily usage scenarios.

Screenshots

RFCReader Pro4 screens
File Guard Pro1 screens

Verdict

The call

The clearest difference is price: File Guard Pro at Free against RFCReader Pro's $1.99. File Guard Pro also leads on iOS requirement (15.6 vs 17.0). On update cadence, ads, in-app purchases 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

File Guard Pro is free to download; RFCReader Pro costs $1.99 up front. Neither carries in-app purchases, so what you see is what you pay.

UpkeepUpdate frequency

RFCReader Pro ships an update every 3 months, File Guard Pro every 2 months. The most recent releases landed on October 2, 2026 and October 13, 2026 respectively.

Scorecard3 real differences · 7 level
RFCReader Pro versus File Guard Pro: the parameters behind the verdict, then further details
ParameterRFCReader ProFile Guard Pro
Price$1.99Free — better
Rating—4.5 (2 ratings) — better
Positive reviews62.5% of reviews—
Number of ratings—2 — better
Update frequencyEvery 3 monthsEvery 2 months — better
AdsNoNo
In-app purchasesNoNo
MonetizationPaidFree — better
DevicesiPhone, iPadiPhone, iPad, iPod — better
Requires iOS17.015.6 — better
Further details — not scored
Size3 MB2 MB
Age rating4+4+
Developer飞 龙斌 虞

Customer experience

RFCReader Pro

Written reviews8 reviews
Positive62.5%
Neutral25.0%
Negative12.5%

File Guard Pro

All ratings2 ratings
Positive100.0%
Neutral0.0%
Negative0.0%

In-app purchases

None

RFCReader Pro

No in-app purchases

None

File Guard Pro

No in-app purchases

Questions

Is RFCReader Pro free?
RFCReader Pro costs $1.99, with no in-app purchases.
Is File Guard Pro free?
File Guard Pro is free to download, with no in-app purchases.
Do RFCReader Pro or File Guard Pro have ads?
Neither RFCReader Pro nor File Guard Pro shows ads.
Which is updated more often, RFCReader Pro or File Guard Pro?
RFCReader Pro ships an update every 3 months, and File Guard Pro every 2 months. Most recently, RFCReader Pro was updated on October 2, 2026 and File Guard Pro on October 13, 2026.

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