# RFCReader Pro vs HelvetiKit

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) and iOS requirement (11.0 vs 18.5). On update cadence, ads and device support there is nothing between them.

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.

RFCReader Pro ships an update every 3 months, HelvetiKit every 2 months. The most recent releases landed on June 1, 2026 and August 8, 2026 respectively.

## The numbers

| Metric | RFCReader Pro | HelvetiKit |
| --- | --- | --- |
| Price | $1.99 | **Free** |
| Rating | — | **[5.0 (1 ratings)](https://appshunter.io/ios/app/helvetikit/id6752776197/reviews)** |
| Number of ratings | — | **1** |
| Positive reviews | 62.5% of reviews | — |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 3 months | **Every 2 months** |
| Monetization | Paid | **Freemium** |
| Size | 3 MB | 3 MB |
| Requires iOS | **11.0** | 18.5 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [飞 龙](https://appshunter.io/developer/965611281) | [阳 张](https://appshunter.io/developer/1832378186) |

## What reviewers say

### RFCReader Pro

[App page](https://appshunter.io/ios/app/rfcreader-pro/id1036461920)

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:** macOS Compatibility

**In-app purchases:** none


### HelvetiKit

[App page](https://appshunter.io/ios/app/helvetikit/id6752776197)

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:** macOS Compatibility, Vision Pro support

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Pro User | $0.99 | one-time |


## Frequently asked 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 June 1, 2026 and HelvetiKit on August 8, 2026.

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*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*