18+ Dev Tools in One App – Full Source Code

Android Studio source code of a fully functional offline developer toolkit with 15+ essential tools for mobile development.

Unlock the potential of the Developer Toolkit with this complete source code. This app features 15+ essential developer tools that work offline, making it the perfect solution for developers, programmers, testers, and engineers who need quick, reliable utilities without relying on internet access.

Included Tools:

JSON Formatter: Beautify and validate JSON data.
XML Beautifier: Format XML data for better readability.
HTML Viewer: View HTML content.
Base64 Encoder/Decoder: Encode and decode Base64 strings.
Hash Generator: Generate MD5, SHA-1, SHA-256, and SHA-512 hashes.
URL Encoder/Decoder: Encode and decode URLs.
Regex Tester: Test regular expressions against text.
Text Diff: Compare two texts to find differences.
UUID Generator: Generate universally unique identifiers.
Color Converter: Convert color codes between different formats (e.g., RGB, Hex).
Log Viewer: View application logs.
Clipboard Manager: Manage clipboard history.
App Info Viewer: View detailed information about installed applications.
JavaScript Tester: Execute JavaScript code snippets.
HTTP Header Viewer: Parse and view HTTP headers.
Network Packet Size Calculator: Calculate network packet sizes.
MAC Address Formatter: Format MAC addresses.
Ping Tools (Local).
Morse Code Converter.
Offline Functionality: All core tools work without an internet connection.

The source code is clean, well-documented, and easy to customize. It is designed to work offline, offering a fast, secure, and seamless experience without the need for APIs or internet connectivity.

Key Features:

Complete source code for 18+ offline developer tools
100% native Android Studio Project (Java/Kotlin)
Works 100% offline – no data or APIs needed
AdMob Integration ready
Easy to modify and integrate into your projects
Detailed documentation included

Requirements:

Android Studio (latest stable version recommended)
Gradle (configured automatically with Android Studio)
Minimum SDK 24 (Android 7.0 – Nougat) or higher
50 MB free storage space

Setup Instructions:

1. Download & Open Project

Download or clone the source code from your Codester purchase.
Open in Android Studio (latest stable version recommended).
Wait for Gradle sync to complete automatically.

2. Run the Project

Select a device or emulator running Android 7.0 – Nougat or higher.
Click Run (Shift + F10) in Android Studio.
The app will build and install automatically.

3. Customize the App

Change branding: Replace app icons in app/src/main/res/mipmap-*. Update splash screen images in app/src/main/res/drawable.
Modify tools: Add, remove, or edit tools in the app module source files.
Enable AdMob: Add your AdMob App ID to AndroidManifest.xml. Add Ad Unit IDs in the code where ads are loaded.
Change app name or package ID: Update in app/src/main/AndroidManifest.xml and build.gradle.

4. Test the App

Use a real device or high-performance emulator.
Ensure all 18+ tools function offline as intended.

5. Build Release APK

Go to Build → Generate Signed Bundle/APK in Android Studio.
Create or use an existing keystore for signing.
Select APK → Release → Finish.
Your signed APK will be generated in app/release/.

6. Publish

Ready to upload on Play Store, Codester, or any app marketplace.
Include screenshots, icons, and banners for a professional listing.

Demo & Resources:

APK: Download APK
Watch Video: YouTube Demo

Developer Toolkit – Complete Source Code for 18+ Mobile Tools