DevTools+: Dev Tools & Code

Format JSON, decode JWTs, test APIs, generate UUIDs, and solve everyday development tasks in one toolkit. Most tools work on device, with no account required.

496 developer tools, ready on iPhone and iPad.

DevTools+ puts everyday code utilities in one searchable app. Format JSON, test APIs, inspect regex, decode JWTs, encode Base64, generate UUIDs, convert timestamps, format SQL, and handle hundreds of other development tasks without jumping between random websites.

FIND THE RIGHT TOOL FAST

• Search all 496 tools across 29 categories
• Pin favorites and reopen recent tools
• Start with practical examples
• Copy and share results
• Keep supported history, snippets, and API work organized

FORMAT AND CONVERT

• JSON formatter, validator, minifier, tree view, sort, and escape
• JSON to YAML, CSV, XML, TypeScript, and Java
• XML, YAML, TOML, CSV, Markdown, SQL, and text utilities

DECODE AND INSPECT

• JWT decoder and analysis tools
• Base64 encoder and decoder
• URL, HTML, Unicode, hexadecimal, and character encoding tools
• Hash, HMAC, password, certificate, header, and security helpers
• Timestamp, timezone, cron, MIME type, port, and HTTP status references

BUILD AND TEST

• API tester and REST, GraphQL, cURL, header, and WebSocket helpers
• Regex tester, match highlighter, replace, and reference tools
• UUID, random data, mock payload, barcode, and QR generators
• Git, CSS, React Native, testing, documentation, file, and log utilities

LOCAL-FIRST BY DESIGN Most tools process directly on your device. Tools that need a network connection are clearly identified. Nothing you enter is sent anywhere unless the selected tool requires a network request.

NO ACCOUNT REQUIRED Open the app and start working. A useful selection of tools is free. DevTools+ Pro unlocks the complete toolkit and removes ads.

Built for developers, QA engineers, API testers, students, and technical teams who want a focused utility on their phone.

Terms of Use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/