Comparison

RFCReader Pro vs HelvetiKit

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

HelvetiKit

A fast, on-device toolbox for developers, offering QR code generation and scanning, color conversions, JSON formatting, JWT decoding, and various text manipulation tools. It prioritizes speed and privacy with an intuitive interface for everyday development tasks.

Highlights
  • QR code generation and scanning
  • Color format conversion (HEX, RGB, HSL)
  • JSON pretty-printing, minifying, and validation
  • JWT decoding
  • Text case conversion
  • UUID generation
  • Hashing (MD5, SHA-1/256/512)
  • Base64 / URL encoding/decoding
  • Timestamp conversion
  • Regex testing and replacement
Features
Read full description

Sixteen developer utilities, ready when you need them. HelvetiKit brings everyday conversions and diagnostics into one focused toolbox for iPhone, iPhone Duo, and iPad. Search for a tool, arrange your favorites, and work in a layout that adapts to the available space. CODE AND TEXT - Format, minify, validate, and sort JSON. - Decode JWT headers and payloads. - Encode and decode Base64 text and URLs. - Calculate MD5, SHA-1, SHA-256, and SHA-512 hashes. - Test regular expressions and perform replacements. - Convert text case and generate Lorem Ipsum. COLORS, NUMBERS, AND TIME - Convert HEX, RGB, and HSL colors with a native color picker. - Copy color values and SwiftUI or UIColor snippets. - Convert binary, octal, decimal, and hexadecimal numbers. - Convert Unix timestamps and dates, including milliseconds. - Generate UUIDs in bulk. QR TOOLS - Generate QR codes from text or links. - Scan with the camera or recognize codes in photos. - Save generated QR images to your photo library. NETWORK UTILITIES - Look up DNS records and public IP information. - Measure HTTP response latency for a host you choose. A WORKSPACE THAT FITS Compact navigation keeps tools close at hand. Wider layouts can show the tool sidebar and place input beside results. Refined light and dark appearances, support for larger text, and English and Simplified Chinese make everyday tasks easier to follow. PRIVACY-MINDED BY DESIGN Local conversions run on your device. Network utilities connect only when you run a lookup or request. Camera and photo access are used for QR tools when you choose those features. No separate app account is required. TRY IT, THEN GO PRO Try 10 tool runs for free. An optional Pro purchase unlocks unlimited runs.

Screenshots

RFCReader Pro4 screens
HelvetiKit3 screens

Verdict

The call

The clearest difference is price: HelvetiKit at Free against RFCReader Pro's $1.99. RFCReader Pro's advantage is in-app purchases (none vs 1). On update cadence, ads, device support and iOS requirement 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

HelvetiKit is free to download; RFCReader Pro costs $1.99 up front. HelvetiKit sells 1 one-off in-app purchase. RFCReader Pro asks for nothing beyond the download.

UpkeepUpdate frequency

RFCReader Pro ships an update every 3 months, HelvetiKit every 2 months. The most recent releases landed on October 2, 2026 and October 10, 2026 respectively.

Scorecard3 real differences · 7 level
RFCReader Pro versus HelvetiKit: the parameters behind the verdict, then further details
ParameterRFCReader ProHelvetiKit
Price$1.99Free — better
Rating—5.0 (1 ratings) — better
Positive reviews62.5% of reviews—
Number of ratings—1 — better
Update frequencyEvery 3 monthsEvery 2 months — better
AdsNoNo
In-app purchasesNo — betterYes
MonetizationPaidFreemium — better
DevicesiPhone, iPadiPhone, iPad
Requires iOS17.0 — better18.5
Further details — not scored
Size3 MB3 MB
Age rating4+4+
Developer飞 龙阳 张

Customer experience

RFCReader Pro

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

HelvetiKit

All ratings1 ratings
Positive100.0%
Neutral0.0%
Negative0.0%

In-app purchases

None

RFCReader Pro

No in-app purchases

1 purchases

HelvetiKit

One-time1
  • Pro User$0.99

Questions

Is RFCReader Pro free?
RFCReader Pro costs $1.99, with no in-app purchases.
Is HelvetiKit free?
HelvetiKit is free to download, with in-app purchases available.
Do RFCReader Pro or HelvetiKit have ads?
Neither RFCReader Pro nor HelvetiKit shows ads.
Which is updated more often, RFCReader Pro or HelvetiKit?
RFCReader Pro ships an update every 3 months, and HelvetiKit every 2 months. Most recently, RFCReader Pro was updated on October 2, 2026 and HelvetiKit on October 10, 2026.

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