DevKit - Developer Utilities

30+ Dev Tools in Your Pocket

Free · In‑App Purchases · Designed for iPad

DevKit: Essential Developer Tools, 100% Offline Stop juggling browser tabs. DevKit puts 30 powerful development utilities in your pocket—all working completely offline with privacy-first design. PRIVACY-FIRST DESIGN > 100% Offline: Every tool works without internet. Your data never leaves your device. > Local Storage Only: All processing happens on your device. No servers, no tracking. > No Personal Data Collection: We don't collect, store, or transmit any of your work. 30 ESSENTIAL TOOLS FORMATTERS > JSON Formatter: Beautify or minify JSON with error highlighting and tree view > HTML Formatter: Beautify, minify, and preview HTML with live rendering > CSS Formatter: Format and validate CSS with syntax highlighting > JS Formatter: Format and minify JavaScript > XML Formatter: Format and validate XML documents > SQL Formatter: Format and validate SQL queries PARSERS & DEBUGGERS > JWT Debugger: Decode tokens, inspect headers and payloads, verify signatures > Cron Parser: Parse cron expressions with next run calculations > Certificate Decoder: Decode X.509 certificates ENCODERS & DECODERS > Base64: Encode and decode Base64 strings > URL Encoder: Encode, decode, and parse URLs > HTML Encoder: Handle HTML entities > Hash Generator: Generate MD5, SHA-1, SHA-256, SHA-512 hashes > Backslash Escape: Escape and unescape special characters CONVERTERS > Timestamp: Convert Unix timestamps to readable dates > Case Converter: Transform between camelCase, snake_case, UPPER CASE, and more > Color Converter: Convert between HEX, RGB, HSL with live preview > YAML ↔ JSON: Convert between YAML and JSON with tree view > Number Base: Convert between Binary, Octal, Decimal, Hexadecimal > Hex ↔ Text: Convert between hex and ASCII > CSV ↔ JSON: Convert between CSV and JSON GENERATORS > UUID/ULID Generator: Create UUIDs and ULIDs instantly > QR Code: Generate customizable QR codes and export as images > Lorem Ipsum: Generate placeholder text > Random String: Generate secure passwords and API keys PRO-TIER UTILITIES > Diff Checker: Compare text with highlighted differences > RegEx Tester: Test regex with live match highlighting > Markdown Previewer: Preview Markdown with GitHub Flavored support > Line Sort: Sort and deduplicate lines > String Inspector: Analyze string statistics BUILT FOR MOBILE > Smart History: Auto-saves recent work (10 items free, unlimited with Pro) > Instant Paste: Smart clipboard detection > Quick Actions: One-tap copy, clear, share > Native Performance: Blazing fast, no loading screens > Light & Dark Modes: Beautiful design for any environment > Organized by Category: Easy browsing and discovery FLEXIBLE PRICING Free: 5 uses per tool daily (some unlimited) Pro: $9.99/month or $79.99/year (save 33%) 7-Day Free Trial | Cancel anytime PERFECT FOR: > Mobile developers debugging on the go > DevOps engineers managing infrastructure > Web developers formatting data > QA testers generating test data > Anyone needing dev tools without internet WHY DEVKIT? > 100% offline—no Wi-Fi required > Privacy-focused—data stays on device > Fast & reliable native performance > Regular updates with new tools > No ads, ever > Built by developers, for developers Download DevKit and take your essential tools anywhere. Terms of Use: Apple's Standard EULA (https://www.apple.com/legal/internet-services/itunes/dev/stdeula/)

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What's New in Version 1.0.3 > 11 NEW TOOLS ADDED We've added Certificate Decoder, CSV to JSON Converter, CSS Formatter, JS Formatter, XML Formatter, SQL Formatter, and more! DevKit now includes 30 essential tools. > UI/UX ENHANCEMENTS Enhanced visuals, improved navigation, and better overall user experience across the app. Enjoy a more polished and intuitive interface. > PERFORMANCE & BUG FIXES Various performance improvements and bug fixes for a smoother, faster experience. Thanks for using DevKit! If you enjoy the app, please leave us a review. Have feedback? Contact us through the app's profile page.

Version 1.0.3

The developer, Alexander Herdt, indicated that the app’s privacy practices may include handling of data as described below. For more information, see the developer’s privacy policy .

  • Data Not Linked to You

    The following data may be collected but it is not linked to your identity:

    • Purchases
    • Usage Data
    • Diagnostics

Privacy practices may vary, for example, based on the features you use or your age. Learn More

Accessibility

The developer has not yet indicated which accessibility features this app supports. Learn More

Information

  • Seller
    • Alexander Herdt
  • Size
    • 51.3 MB
  • Category
    • Developer Tools
  • Compatibility
    Requires iOS 15.1 or later.
    • iPhone
      Requires iOS 15.1 or later.
    • iPad
      Requires iPadOS 15.1 or later.
    • iPod touch
      Requires iOS 15.1 or later.
    • Mac
      Requires macOS 12.0 or later and a Mac with Apple M1 chip or later.
  • Languages
    • English
  • Age Rating
    4+
  • In-App Purchases
    Yes
  • Copyright
    • © 2025 Alex Herdt
  • Developer Website
  • Privacy Policy