DevToolbox

TorOS

In-app purchases

About this app

Dev Toolbox – All-in-One Developer Utility App

Dev Toolbox is a powerful toolkit for Android developers, backend engineers, security professionals, and computer science students. Process and analyze data directly on your device with an offline-first and privacy-focused approach.

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JSON TOOLS
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• JSON Prettify & Minify – Format or compress JSON instantly
• JSON Diff – Compare two JSON documents side-by-side
• JSON ↔ YAML Converter – Convert between JSON and YAML formats
• XML ↔ JSON Converter – Transform structured data easily
• CSV ↔ JSON Converter – Parse and generate CSV data
• JSON ↔ TOML Converter – Convert configuration files
• Large JSON Viewer – Navigate large JSON files with a tree view
• JSON → Kotlin Data Class – Generate Kotlin models from JSON

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ENCODING & DECODING
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• Base64 Encoder / Decoder – Encode and decode Base64 strings
• Hex Converter – Convert between String, Base64, and Hex formats
• URL Encoder / Decoder – Encode special characters for URLs
• Unicode Escape / Unescape – Supports Java, JavaScript, Python, and CSS formats
• Image → Base64 – Convert images to Base64 data URIs
• Epoch Converter – Convert Unix timestamps to readable dates
• UUID Generator – Generate UUID v4 values with batch support
• Cron Expression Builder – Build and analyze cron schedules

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CRYPTOGRAPHY & SECURITY (PRO)
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• Hash & Checksum – MD5, SHA-1, SHA-256, SHA-512, CRC-32, Adler-32
• AES Encryption / Decryption – Secure symmetric encryption
• RSA Key Generator – Generate key pairs and encrypt or decrypt data
• JWT Decoder – Decode and inspect JSON Web Tokens
• Password Hashing – PBKDF2, bcrypt, scrypt, Argon2
• Key Strength Analyzer – Entropy analysis and password scoring

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API & NETWORK TOOLS (PRO)
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• HTTP Client – Send REST API requests with headers and body
• Mock API Generator – Create mock responses for testing
• Curl Parser – Convert curl commands to readable requests
• Ping Tool – Test network connectivity and latency
• WebSocket Client – Connect and test WebSocket endpoints
• SSH Client – Secure shell connections
• FTP Client – File transfer protocol connections

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ANDROID DEVELOPMENT
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• Intent Builder – Generate Android Intent code
• Deep Link Tester – Parse and test deep links and app links
• Version Code Calculator – Calculate versionCode from semantic versions

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KEY FEATURES
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• Offline-First – All processing happens locally on the device
• Privacy-Focused – No analytics, no tracking, and no data collection
• Dark & Light Themes – Developer-friendly UI inspired by modern IDEs
• History & Favorites – Save frequently used operations
• Copy to Clipboard – One-tap copy for quick workflows
• Free Trial – Try PRO tools three times before purchase
• One-Time Purchase – Lifetime PRO access without subscriptions

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PRO FEATURES
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• Full access to cryptography and security tools
• Full access to API and network utilities
• Database backup and restore
• Unlimited usage

Dev Toolbox is designed for everyday development tasks including API testing, data conversion, debugging, and security analysis. Built by developers, for developers.

Install Dev Toolbox and streamline your development workflow.

What’s new

Add IP & Port Scanner