Dev Tool box - Developer Tools is made and published by Gonigon. AppBrain is an independent app data site and isn't affiliated with Gonigon. The app name, icon, screenshots and description belong to Gonigon and are shown as published on Google Play.

About Dev Tool box - Developer Tools

Dev Tool box - Developer Tools is a tools app developed by Gonigon.

Install Statistics

Dev Tool box - Developer Tools has been installed 120 times. In the last 30 days, the app was installed 9 times.

User Ratings

The app has no ratings yet.

App Information

Dev Tool box - Developer Tools is freely available from Google Play. The app size is 35.49 MB. The latest version available is 1.0.1. The last update was on September 13, 2026.

Technical Requirements

The app has a content rating of Everyone. The app has been available on Google Play since March 2026.

Description by Gonigon (from Google Play)

Dev Toolbox is a fast, lightweight developer utility app for your mobile device 🛠️

Format JSON, encode URLs, decode Base64, inspect JWT tokens, and more -- all without opening your laptop ⚡

📋 Features

🔸 JSON Formatter — Pretty-print and validate JSON strings instantly.
🔸 URL Encode/Decode — Encode and decode URLs with RFC 3986 compliance.
🔸 Base64 Encode/Decode — Convert text to and from Base64. Supports URL-safe format.
🔸 JWT Decoder — Decode JWT tokens into Header, Payload, and Signature.
🔸 Text Case Converter — Convert between 9 text cases including camelCase, snake_case, kebab-case, PascalCase, and more.
🔸 Hash Generator — Generate MD5, SHA-1, SHA-256, and SHA-512 hashes at once.
🔸 Unix Timestamp Converter — Convert between Unix timestamps and human-readable dates.
🔸 Number Base Converter — Auto-detect and convert between decimal, binary, octal, and hexadecimal.
🔸 String Escape/Unescape — Handle escape sequences in strings.
🔸 Color Converter — Convert between HEX, RGB, and HSL with a live color preview.

✨ Highlights
💾 Auto-save — Your input is saved and restored automatically.
🌙 Dark mode support
📋 One-tap copy to clipboard
📱 On-device — every conversion runs locally and your input is never uploaded.

Recent changes:
Fixed the tool list not showing on iPad.
The tool list is now visible as soon as the app opens.
Fixed the ad consent notice and the tracking prompt appearing at the same time.

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App Performance Report

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Screenshots

Dev Tool box - Developer Tools Screenshot 1 of 3

Dev Tool box - Developer Tools Screenshot 2 of 3

Dev Tool box - Developer Tools Screenshot 3 of 3

Screenshots by Gonigon, from the Google Play listing

Official page on Google Play Also on the App Store

Also available on the App Store

Dev Tool box - Developer Tools

Seonggon Sim

0.0

Free

Alternatives to Dev Tool box - Developer Tools

Installs over time

Dev Tool box - Developer Tools has been installed 120 times. Over the past 30 days, it has been installed 9 times.

Changelog of Dev Tool box - Developer Tools

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Developer information for Gonigon

Gonigon

tjdrhs90@gmail.com

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Comments on Dev Tool box - Developer Tools for Android

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Google Play Rankings for Dev Tool box - Developer Tools

This app is not ranked

Technologies used by Dev Tool box - Developer Tools

14 permissions

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Frequently asked questions about Dev Tool box - Developer Tools

Is Dev Tool box - Developer Tools free?

Yes. Dev Tool box - Developer Tools is free on Google Play.

Is Dev Tool box - Developer Tools still available?

Yes. Dev Tool box - Developer Tools is on Google Play, and the last update we saw was on September 13, 2026.

Does Dev Tool box - Developer Tools contain ads?

Yes. Google Play lists Dev Tool box - Developer Tools as containing ads.

How large is Dev Tool box - Developer Tools?

Dev Tool box - Developer Tools is 35.49 MB.

Is Dev Tool box - Developer Tools suitable for children?

Google Play rates the content of Dev Tool box - Developer Tools as suitable for everyone.

How many times has Dev Tool box - Developer Tools been installed?

Google Play lists 100+ installs for Dev Tool box - Developer Tools.

Who made Dev Tool box - Developer Tools?

Dev Tool box - Developer Tools was developed by Gonigon. It is listed in the tools category on Google Play.

What are the best alternatives to Dev Tool box - Developer Tools?

People looking at Dev Tool box - Developer Tools also look at these tools apps: Base64 Encoder Decoder, Text Converter: Encode, Decode, Universal Encoding Tool, Barcode Data Decoder Verifier, JWT Checker.

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