HEX
Developer multi-tool for your iPhone, iPad & Android phone. 21 utilities, zero network, $2.99.

// WHAT IT DOES
Hex puts 21 developer utilities in your pocket — the tools you reach for daily but shouldn't need a laptop to use. Format JSON, decode JWTs, generate UUIDs, test regex, convert timestamps, check diffs, hash strings, and more.
Everything runs on-device. No network, no accounts, no subscriptions. Clipboard auto-detection suggests the right tool when you copy something. Deep links let you jump straight to any tool via hex://json URLs.
// 21 TOOLS
- -Base64 Encode/Decode
- -URL Encode/Decode
- -HTML Entities
- -JWT Decode
- -Hash Generator (MD5, SHA-1, SHA-256, SHA-512)
- -JSON Formatter & Validator
- -XML Formatter
- -SQL Formatter
- -Markdown Preview
- -HTML Preview
- -UUID Generator (batch mode)
- -Lorem Ipsum Generator
- -Password Generator (with strength meter)
- -Color Converter (HEX / RGB / HSL)
- -File Checksum
- -Unix Timestamp Converter
- -Cron Expression Parser
- -Timezone Converter
- -Diff Checker
- -Regex Tester (live match highlighting)
- -Text Inspector (char/word/line count)
// TECHNICAL
// PRIVACY
Hex collects no personal data. No analytics, no crash reporting, no accounts, no network access — the Android app doesn't even request the internet permission. The only data stored is your recent tools list, which never leaves your device.
READ FULL PRIVACY POLICY →