Dev Tool box - Developer Tools

JSON, URL, Base64 & More

Free

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. Easily convert between minified and pretty-printed formats. Tree view visualization for better structure understanding. - URL Encoder/Decoder Quickly encode or decode URLs for API testing and web development. Support for complete URL encoding and component encoding. - Base64 Encoder/Decoder Convert text to Base64 and vice versa. 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. - Text Case Converter Transform text between various cases: camelCase, PascalCase, snake_case, kebab-case, UPPERCASE, lowercase, and more. - Hash Generator Generate secure hashes using MD5, SHA-1, SHA-256, and SHA-512 algorithms. Essential for checksum verification and security testing. 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 - Students learning to code DevToolbox is your pocket-sized development companion, bringing essential tools right to your fingertips. Stop switching between websites and online tools - get everything you need in one native app. Download DevToolbox today and supercharge your development workflow!

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What's New in This Version Enhanced compatibility with iOS 26 Applied Liquid Glass rendering technology for improved visual performance Optimized system stability and performance

Version 1.0.2

The developer, Seonggon Sim, indicated that the app’s privacy practices may include handling of data as described below. For more information, see the developer’s privacy policy .

  • Data Used to Track You

    The following data may be used to track you across apps and websites owned by other companies:

    • Identifiers

  • Data Not Linked to You

    The following data may be collected but it is not linked to your identity:

    • Identifiers

Privacy practices may vary based, for example, on the features you use or your age. Learn More

Accessibility

The developer has not yet indicated which accessibility features this app supports. Learn More

Information

  • Size
    • 3.9 MB
  • Category
    • Developer Tools
  • Compatibility
    Requires iOS 18.0 or later.
    • iPhone
      Requires iOS 18.0 or later.
    • iPad
      Requires iPadOS 18.0 or later.
    • Mac
      Requires macOS 15.0 or later.
    • Apple Vision
      Requires visionOS 2.0 or later.
  • Languages
    • English
  • Age Rating
    4+
  • Provider
    Seonggon Sim
    • Seonggon Sim has not identified itself as a trader for this app. If you are a consumer in the European Economic Area, consumer rights do not apply to agreements between you and the provider.
  • Copyright
    • © Copyright 2025. SimSeonggon all rights reserved.
  • Developer Website
  • Privacy Policy

    • More by Seonggon Sim