The essential developer toolkit for iOS — chmod, cron, regex, JWT, DNS, and more. Beautifully crafted with Liquid Glass.
Download on the App StoreRequires iOS 26.0 or later · iPhone and iPad
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.
Unlock the full power of BoltKit with unlimited saves, full history, and export.
Save as many calculations, conversions, and results as you need. Free tier is limited to 3 saves per tool.
Access your complete history across all tools. Free tier keeps only the last 10 entries per tool.
Export results as formatted text to share with your team, paste into docs, or save for later reference.
Help fund ongoing development and new tools. BoltKit has zero third-party dependencies and no ads.
One-time purchase. Yours forever.
BoltKit runs entirely on your device. Your data never leaves your iPhone or iPad. No accounts, no tracking, no analytics.
No accounts. No tracking. No data collection.