# DevKit: JSON, JWT & Dev Tools > JSON formatter, JWT debugger, regex tester + 27 more. All offline, all local. Canonical page: [https://chrome-stats.com/d/app.devkitpro.android](https://chrome-stats.com/d/app.devkitpro.android) ## Overview - **ID:** `app.devkitpro.android` - **Platform:** Android - **Type:** Android app - **Status:** Available - **Publisher:** DevKitApps - **Category:** TOOLS - **Downloads:** 33 - **Version:** 1.0.7 - **Last updated:** 2026-07-17 - **First published:** 2025-12-12 - **Publisher country:** US - **Size:** 90 MB - **Data as of:** 2026-09-08 - **Store listing:** [Google Play Store](https://play.google.com/store/apps/details?id=app.devkitpro.android) - **Privacy policy:** [https://devkitpro.app/privacy](https://devkitpro.app/privacy) ## Description DevKit puts 30 developer utilities in your pocket — and every one runs entirely on your device.

Stop juggling browser tabs. Stop pasting production tokens into random websites. Format JSON, decode a JWT, test a regex, or convert a timestamp on a train, on a plane, or inside a locked-down corporate network.

YOUR WORK STAYS ON YOUR DEVICE
> Every tool runs locally. The JSON you paste, the token you decode, the certificate you inspect — none of it is uploaded to a server, and none of it is visible to us.
> All 30 tools work with no internet connection.
> No account, no sign-up, no email required.

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 epoch 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 to JSON: Convert between YAML and JSON with tree view
> Number Base: Convert between Binary, Octal, Decimal, Hexadecimal
> Hex to Text: Convert between hex and ASCII
> CSV to 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

TEXT & COMPARISON
> 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, stored only on your device
> 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

WHO IT'S FOR
> Software engineers debugging away from a desk
> Site reliability engineers checking cron schedules and certificates during an incident
> Backend developers inspecting tokens and payloads
> Engineering managers reviewing a diff or a config between meetings
> Anyone who needs dev tools without a network

PRICING
Pro: $9.99/month or $39.99/year (save 67%)
3-day free trial. Cancel anytime.

WHY DEVKIT
> Works with no connection
> Your work never leaves the device
> Fast, native performance
> Regular updates with new tools
> No ads, ever
> Built by a developer, for developers

Download DevKit and take your tools anywhere. ## Rankings - #2,396,108 — Overall ## Permissions and access ### Permissions - `android.permission.ACCESS_ADSERVICES_AD_ID` - `android.permission.ACCESS_ADSERVICES_ATTRIBUTION` - `android.permission.ACCESS_NETWORK_STATE` - `android.permission.CAMERA` - `android.permission.INTERNET` - `android.permission.READ_EXTERNAL_STORAGE` - `android.permission.RECORD_AUDIO` - `android.permission.SYSTEM_ALERT_WINDOW` - `android.permission.VIBRATE` - `android.permission.WAKE_LOCK` - `android.permission.WRITE_EXTERNAL_STORAGE` - `app.devkitpro.android.DYNAMIC_RECEIVER_NOT_EXPORTED_PERMISSION` - `com.android.vending.BILLING` - `com.android.vending.CHECK_LICENSE` - `com.google.android.finsky.permission.BIND_GET_INSTALL_REFERRER_SERVICE` - `com.google.android.gms.permission.AD_ID` ## Similar extensions and apps - [DevToolKit: Developer Tools](https://chrome-stats.com/d/com.ilyas.ilyasapps.devtoolkit) — 35 users - [JSON Formatter & Dev Tools](https://chrome-stats.com/d/ts.hexabytes.devtoolkit) — 43 users - [Dev Tools: JSON, JWT, Regex](https://chrome-stats.com/d/com.mm.toolbox.dev.tools) — 21 users - [DevKit Mobile: Developer Tools](https://chrome-stats.com/d/com.devkit.mobile) — 6 users - [JSON Formatter, API Tester Kit](https://chrome-stats.com/d/com.devtools.jsonformatter) — 46 users - [Dev ToolBox](https://chrome-stats.com/d/com.krystalinfo.developertool) — 27 users - [Dev Tools: JSON, JWT & Regex](https://chrome-stats.com/d/com.zakariae1995.Devtools) — 156 users - [DevBuddy: Offline Dev Toolkit](https://chrome-stats.com/d/com.cosmovex.devbuddy) — 469 users - [Developer Tools & JSON Editor](https://chrome-stats.com/d/com.developertools.jsonvalidator) — 123 users - [Dev Tools: JWT, JSON, Regex](https://chrome-stats.com/d/com.devtools.app) — 16 users - [Dev Toolbox](https://chrome-stats.com/d/com.debugentity.devtoolbox) — 2 users - [DevSuite - Developer Tools Kit](https://chrome-stats.com/d/com.vk.timemachine) — 171 users --- Source: [Chrome-Stats](https://chrome-stats.com/d/app.devkitpro.android)