Dev ToolBox icon

Dev ToolBox


Krystal info
1.0.0
  • Mar 19, 2026
    Update date
  • Security
  • Everyone
  • Android 7.0+
    Android OS

About Dev ToolBox

The ultimate offline developer multitool: 35+ fast coding & debugging utilities

Supercharge Your Development Workflow!

Say goodbye to bookmarking dozens of websites for simple formatting, encoding, or generating tasks. Dev ToolBox is the ultimate all-in-one utility app built for coders, testers, and designers.

Whether you need to quickly format JSON, decode a JWT, test a Regex pattern, or generate a UUID, this app brings over 35 essential developer tools straight to your pocket. The best part? It works 100% offline, meaning your data stays secure on your device and you get lightning-fast results without needing an internet connection.

🛠️ Included Tools & Utilities:

Formatters & Parsers

JSON Formatter: Beautify or minify JSON strings instantly.

SQL Formatter: Clean up complex SQL queries.

XML Formatter: Format and validate XML data.

YAML to JSON: Seamlessly convert YAML files into JSON format.

Encoders & Decoders

Base64 Encoder/Decoder: Safely encode or decode text and data.

URL Encoder/Decoder: Prepare URLs for safe web transmission.

HTML Entity Coder: Encode or decode HTML entities safely.

JWT Decoder: Inspect JSON Web Tokens without pasting them online.

Generators & Security

SHA Hash Generator: Generate secure SHA-1, SHA-256, SHA-512 hashes.

UUID Generator: Create unique version 4 UUIDs on the fly.

QR Generator: Convert text, links, or data into scannable QR codes.

Lorem Ipsum Generator: Generate placeholder text for your UI designs.

Web & Design Tools

Color Converter: Convert seamlessly between HEX, RGB, HSL, and more.

CSS Unit Converter: Translate PX to REM, EM, VW, and VH effortlessly.

Aspect Ratio Calculator: Calculate exact dimensions for images and video.

Case Converter: Switch text between camelCase, snake_case, PascalCase, etc.

Text & Code Utilities

Regex Tester: Test and debug your regular expressions in real-time.

Text Diff Checker: Compare two blocks of text or code to find changes.

Markdown Preview: Write and preview Markdown files instantly.

String Inspector: Count characters, words, bytes, and analyze text.

System & Time

Unix Timestamp: Convert epochs to human-readable dates and vice versa.

Cron Expression: Parse and understand complex cron schedules.

Base Converter: Convert numbers between binary, octal, decimal, and hex.

Display Info: Check your device's screen resolution, density, and refresh rate.

...plus 10+ more tools designed to make your daily coding tasks easier!

🔒 Why Choose Dev ToolBox?

100% Offline & Private: No server calls. Your code and data never leave your device.

Blazing Fast: Native performance means no waiting for web pages to load.

Lightweight: Packed with features but takes up minimal space on your phone.

No Distractions: A clean, developer-focused UI designed for getting things done.

Simplify your workflow and carry your essential tools wherever you go. Download Dev ToolBox today!

Show More

Additional APP Information

Latest Version

1.0.0

Uploaded by

Teetotaller Lucas

Requires Android

Android 7.0+

License Required

Content Rating

Everyone

Security Report

What's New in the Latest Version 1.0.0

Last updated on Mar 19, 2026

Dev tool box with 35+ offline tools.

Show More
Security Check Completed
No Virus
No Spyware
No Malware
No Virus
No Spyware
No Malware
Package Name:com.krystalinfo.developertool
SHA-256:1cb1b16d6d37a10743366625ee960a102b157432d8f26622b8fb5f5aa8a20204
SHA-1:f5a9c978170d11859144dfead552d70f1ca82ca3
Show More
Verified by: APKPURE

Dev ToolBox Screenshots

Dev ToolBox posterDev ToolBox screenshot 1Dev ToolBox screenshot 2Dev ToolBox screenshot 3Dev ToolBox screenshot 4Dev ToolBox screenshot 5Dev ToolBox screenshot 6Dev ToolBox screenshot 7

Related Tags

Popular Articles In Last 24 Hours

Searching...
Subscribe to APKPure
Be the first to get access to the early release, news, and guides of the best Android games and apps.
No thanks
Sign Up
Subscribed Successfully!
You're now subscribed to APKPure.