The essential developer toolkit for iPhone, iPad, and Mac — chmod, cron, regex, JWT, DNS, and more. Beautifully crafted with Liquid Glass.
Download on the App StoreCompletely free · No ads · No in-app purchases · iOS 26.0+
10 essential developer tools, beautifully crafted with Apple's Liquid Glass design.
Unix file permissions calculator with interactive checkbox grid, octal and symbolic output, and common presets.
Build cron expressions visually with field editors, quick presets, human-readable descriptions, and next-run previews.
Convert between Unix timestamps and human-readable dates with a live ticker, bidirectional conversion, and timezone picker.
Encode and decode Base64 with support for URL-safe variants and automatic input detection.
IP subnet calculator with CIDR slider, network/broadcast addresses, usable host range, and binary view.
Query DNS records via DNS-over-HTTPS using Cloudflare or Google resolvers. Supports A, AAAA, MX, CNAME, TXT, and more.
Searchable HTTP status code reference grouped by category — 1xx through 5xx with descriptions and usage notes.
Format, validate, and minify JSON with syntax highlighting and a collapsible tree view.
Test regex patterns with live matching, capture group extraction, flag toggles, and a library of common examples.
Decode and inspect JWT tokens — view header, payload, signature, algorithm, and expiry status at a glance.
All 10 tools. Every feature. No paywalls, no ads, no in-app purchases.
Save as many calculations, conversions, and results as you need. No limits.
Access your complete history across all tools. Everything is kept on your device.
Export results as formatted text to share with your team, paste into docs, or save for later reference.
No subscriptions, no one-time purchases, no hidden fees. Just download and use.
Free forever. No strings attached.
BoltKit runs entirely on your device. Your data never leaves your iPhone, iPad, or Mac. No accounts, no tracking, no analytics.
No accounts. No tracking. No data collection.