
DevUtilities
AI based developer tools
Only for Mac
$9.99
Mac
23 developer tools: JSON, JWT, UUID, Base64, Regex, Parquet viewer, AI chat with Markdown, AI translate with OpenAI TTS, crypto, color picker, timestamp and more.
DevUtilities is a native macOS application providing 23 essential utilities for software developers. Built entirely with Swift and native macOS technologies, it offers a clean, fast interface with real-time processing.
Core Features:
- AI Chat - Intelligent assistant with new Markdown UI, one-click code block copy, DeepSeek reasoning, and custom model support
- AI Translate - Professional translation with TTS model, real-time streaming, and 19 languages
- JSON Formatter - Format, validate, escape/unescape, and diff mode with visual CodeMirror editor
- Text Compare - Side-by-side text comparison with visual diff highlighting and real-time status
- JWT Encoder/Decoder - HMAC and RSA algorithms (RS256, RS384, RS512) with CryptoKit security
- UUID Generator - Multiple versions (v1, v4, v5, v7) with bulk generation
- Regex Test - Pattern matching with capture groups and common patterns
- Base64 Encode/Decode - Text encoding with URL-safe variant
- Hex String Converter - Bidirectional hex-to-string with UTF-8/UTF-16/ASCII
- Color Picker - Professional color format converter for HEX, RGB, RGBA, HSL, HSLA, HSB, and CMYK
- Parquet Viewer - Unified Rust-based API for Parquet and Arrow files
- Crypto Tools - Complete suite with MD5, SHA, AES-GCM-256, and RSA-2048/4096 encryption
- SQL Formatter - Minimal and beautify modes with diff comparison
- HTML Formatter - Proper indentation with diff comparison
- Timestamp Converter - Bidirectional conversion with timezone support
- Unit Converter - 7 categories (Data, Time, Length, Weight, Temperature, Area, Volume)
- Base Converter - Binary, octal, decimal, hexadecimal, and Base62
- Random String Generator - Cryptographically secure with presets and requirements
- Currency Converter - Real-time conversion with 38 currencies and 30-day history
- URL Tools - Encoding/decoding and comprehensive parsing
- IP Query - Geolocation with dual network detection
- HTTP Request - Full HTTP client with SSE streaming and JSON tree view
- QR Code - Generation and scanning with multiple formats
Key Benefits:
- Enhanced AI Chat with beautiful Markdown rendering and one-click copy for code blocks
- OpenAI TTS for AI Translate — ultra-low latency voice playback in 13 voices
- OpenAI Responses API support — compatible with the latest GPT models
- Side-by-side diff for Text, JSON, HTML, and SQL
- Cryptographically secure random string and key generation
- Parquet and Arrow file viewer — rare on macOS
- All tools work offline (except AI, currency, and IP features)
- Customizable sidebar with drag-and-drop tool ordering
- Quick search to jump between 23 tools instantly
- Native macOS performance — no Electron, no web views
Perfect for developers who need a reliable Swiss Army knife of utilities without switching context.
This app hasn’t received enough ratings or reviews to display an overview.
Version 2.12.0:
AI Chat — Enhanced Markdown Rendering:
- Migrated to Textual rendering engine for richer, more accurate output
- Improved code block syntax highlighting across all languages
- One-click Copy button on every code block — grab code snippets instantly without selecting text
- Better rendering for tables, nested lists, and inline formatting
- Smoother real-time streaming updates — no more layout flicker during generation
- More accurate display for technical content like diffs, JSON, and shell commands
AI Translate — AI Text-to-Speech:
- New TTS engine alongside the existing macOS TTS
- Real-time PCM audio streaming — playback starts in realtime, no waiting
- 13 voice options: alloy, ash, ballad, coral, echo, fable, nova, onyx, sage, shimmer, verse, and more
- Auto mode automatically selects the best available TTS engine
- Configurable in Settings → AI → Text-to-Speech section
- Works alongside existing macOS native voices for flexibility
- Speaker buttons remain on all translation output panels
Quality Improvements:
- Improved chat rendering stability during streaming responses
- Better readability for technical responses with complex Markdown structure
The developer, Hengfei Yang, 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 Not Linked to You
The following data may be collected but it is not linked to your identity:
- Identifiers
- Usage Data
Accessibility
The developer has not yet indicated which accessibility features this app supports. Learn More
Information
- Seller
- Hengfei Yang
- Size
- 15.2 MB
- Category
- Developer Tools
- Compatibility
Requires macOS 15.0 or later.
- Mac
Requires macOS 15.0 or later.
- Languages
- English
- Age Rating
4+
- 4+
- Copyright
- Copyright © 2026 Hengfei Yang
