DevBuddy: Developer Tools

CosmoVex

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About this app

DevBuddy is an all-in-one toolkit for developers, QA engineers, API testers, DevOps teams, students, and technical power users.

Instead of installing a separate app for every task, get fast access to the tools you use most:
JSON Formatter
XML Formatter
SQL Formatter
Markdown Preview
Diff Tool
Base64 Encoder / Decoder
URL Encoder / Decoder
HTML Entity Encoder / Decoder
JWT Decoder
UUID Generator
Hash Generator
QR Generator
Unix Timestamp Converter
Color Picker
Number Base Converter
Regex Tester
YAML to JSON Converter
Prompt Template Builder
Token Counter
Text Chunker
Markdown to JSON Tooling
API Payload Explorer
AI Safety Checker
UUID + Hash Audit
TOTP Tester
AES Encrypt / Decrypt
HMAC Generator and Verification

Why developers use DevBuddy:
Work faster with 27 essential tools in one app
Format, validate, convert, compare, encode, decode, generate, and test instantly
Use practical tools for JSON, JWT, Base64, regex, UUID, SQL, YAML, timestamps, encryption, hashes, and more
Designed for everyday debugging, development, QA, API work, and incident response
Clean mobile interface built for quick utility, not clutter

Popular use cases:
Pretty print and validate JSON
Decode JWT tokens
Test regex patterns
Generate UUIDs and hashes
Convert Unix timestamps
Encode Base64 and URLs
Format SQL and XML
Generate QR codes
Verify TOTP codes
Encrypt and decrypt text with AES
Create HMAC signatures
Chunk text for prompts and RAG workflows

DevBuddy is built for speed and convenience so you can solve small technical problems quickly from your phone.

Install DevBuddy and keep your essential developer tools in your pocket