Comparison

Dev Tool box vs Embedded Helper

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

Head to head
About

Dev Tool box

Features
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DevToolbox is an essential collection of developer utilities designed to streamline your coding workflow. Whether you're debugging APIs, encoding data, or formatting JSON, DevToolbox provides the tools you need in a clean, native interface. KEY FEATURES: • JSON Formatter & Validator Format, validate, and beautify JSON with syntax highlighting. Tree view visualization for better structure understanding. Built-in search functionality to find text within large JSON files. • URL Encoder/Decoder Quickly encode or decode URLs for API testing and web development. RFC 3986 compliant encoding for maximum compatibility. • Base64 Encoder/Decoder Convert text to Base64 and vice versa. Supports URL-safe Base64 and auto-padding. Perfect for encoding credentials, tokens, and data URIs. • JWT Decoder Decode and inspect JSON Web Tokens without external services. View header, payload, and signature details instantly. Automatically handles "Bearer " prefix. • Text Case Converter Transform text between various cases: camelCase, PascalCase, snake_case, kebab-case, SCREAMING_SNAKE_CASE, dot.case, UPPERCASE, lowercase, and Title Case. Smart parsing for any input format. • Hash Generator Generate secure hashes using MD5, SHA-1, SHA-256, and SHA-512 algorithms. Essential for checksum verification and security testing. • Unix Timestamp Converter Convert between Unix timestamps and human-readable dates. Supports seconds and milliseconds. Multiple output formats including ISO 8601, UTC, and local time. • Number Base Converter Convert between Decimal, Binary, Octal, and Hexadecimal. Auto-detects input format with 0x, 0b, 0o prefix support. • String Escape/Unescape Escape special characters for JSON strings or unescape encoded text. Handles \n, \t, \", \\ and more. • Color Converter Convert HEX colors to RGB and HSL with live preview. Generates ready-to-use SwiftUI, UIKit, and CSS code snippets. WHY DEVTOOLBOX? • Native Performance: Built with SwiftUI for blazing-fast performance • Privacy First: All processing happens locally on your device • Universal App: Works seamlessly on iPhone, iPad, and Mac • Dark Mode Support: Easy on the eyes during late-night coding sessions • No Ads, No Tracking: Just pure functionality • Offline Ready: No internet connection required Perfect for mobile developers, web developers, API developers, QA engineers, security professionals, and students learning to code. DevToolbox is your pocket-sized development companion. Stop switching between websites and online tools - get everything you need in one native app.

About

Embedded Helper

Features
Read full description

Embedded Helper is designed to boost the productivity of firmware developers and MCU engineers. Access pinout references instantly and generate C code automatically. [Key Features] 1. Arduino Pinout Reference - Instantly check pin diagrams for most popular Arduino boards (Uno, Nano, Mega, etc.). - No need to search the web for pin maps every time. 2. C Code Generator - JSON to C Struct: Instantly convert JSON data into ready-to-use C structures. 3. Display & Font Tools - Dot Matrix Editor: Draw icons or fonts on a grid and generate C arrays (Hex/Bin) for your GLCD/OLED drivers. 4. Color Converter - RGB888 to RGB565: Convert standard color codes to 16-bit formats used in TFT LCDs. 5. Number System Converter - Real-time conversion between HEX, BIN, and DEC. - Visualize bit-level data efficiently.

Screenshots

Dev Tool box2 screens
Embedded Helper4 screens

Verdict

The call

The clearest difference is in-app purchases: Dev Tool box at none against Embedded Helper's 1. Dev Tool box also leads on update cadence (every 3 weeks vs every 2 months). Embedded Helper's advantage is iOS requirement (13.0 vs 18.0). On price, ads and device support there is nothing between them.

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

CostPrice Ā· In-app purchases Ā· Ads Ā· Monetization

Both are free to download. Embedded Helper sells 1 one-off in-app purchase. Dev Tool box asks for nothing beyond the download.

UpkeepUpdate frequency

Dev Tool box ships an update every 3 weeks, Embedded Helper every 2 months. The most recent releases landed on September 17, 2026 and September 10, 2026 respectively.

Scorecard3 real differences Ā· 3 level
Dev Tool box versus Embedded Helper: the parameters behind the verdict, then further details
ParameterDev Tool boxEmbedded Helper
PriceFreeFree
Update frequencyEvery 3 weeks — betterEvery 2 months
AdsYesYes
In-app purchasesNo — betterYes
DevicesiPhone, iPad, MaciPhone, iPad, iPod
Requires iOS18.013.0 — better
Further details — not scored
Size4 MB60 MB
Age rating4+4+
DeveloperSeonggon SimDONGSOO LEE

In-app purchases

None

Dev Tool box

No in-app purchases

1 purchases

Embedded Helper

One-time1
  • Remove Ads$1.99

Questions

Is Dev Tool box free?
Dev Tool box is free to download, with no in-app purchases.
Is Embedded Helper free?
Embedded Helper is free to download, with in-app purchases available.
Do Dev Tool box or Embedded Helper have ads?
Both Dev Tool box and Embedded Helper show ads.
Which is updated more often, Dev Tool box or Embedded Helper?
Dev Tool box ships an update every 3 weeks, and Embedded Helper every 2 months. Most recently, Dev Tool box was updated on September 17, 2026 and Embedded Helper on September 10, 2026.

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