All In One Calculator – Android (Kotlin)

Launch Your Own Powerful Android App in Record Time

Are you an Android developer looking to launch a high-quality utility app without spending months on development? The All In One Calculator – Android (Kotlin) source code is your perfect solution. This isn’t just a simple calculator; it’s a comprehensive suite of tools designed to solve everyday problems for your users, all packaged in a clean, modern interface.

Building a feature-rich application from scratch is a massive undertaking, requiring expertise in UI/UX design, complex logic, and monetization strategies. This premium app template provides a solid, professional foundation built with modern Kotlin, allowing you to bypass the most time-consuming development phases. You can focus on customizing, branding, and launching your app on the Google Play Store to start generating revenue quickly.

Key Features of the All In One Calculator App Template

This Android app template is packed with features designed for user engagement and easy monetization. Here’s a glimpse of what you get right out of the box:

• Massive Collection of Calculators: Includes over 75+ calculators and unit converters, covering everything from standard math to complex financial and health calculations.
• Built-in Monetization: Seamlessly integrated with Google AdMob (Banner, Interstitial, Native ads) and In-App Purchases (IAP) for a ‘Remove Ads’ feature.
• Modern Technology Stack: Developed with Kotlin, the official language for Android, ensuring performance, security, and future compatibility.
• Clean, Professional UI/UX: A user-friendly interface with both Light and Dark mode options to enhance user experience and retention.
• Easy to Reskin & Customize: The code is well-organized and documented, making it incredibly simple to change colors, branding, and add your unique touch.
• Firebase Integration: Leverages Firebase for robust analytics, crash reporting, and remote configuration, giving you deep insights into your app’s performance.
• No Server Required: The app operates entirely offline, reducing complexity and operational costs.

In-Depth Feature Analysis

Let’s dive deeper into the three core pillars that make this Android source code an invaluable asset for any developer.

A Monetization Powerhouse: AdMob & In-App Purchases

Profitability is built directly into the core of this app template. You don’t need to spend weeks integrating and testing ad networks. The All In One Calculator – Android (Kotlin) comes pre-configured with Google AdMob, the industry standard for mobile advertising.

• Multiple Ad Formats: Strategically placed Banner, Interstitial, and Native ads are already implemented to maximize your revenue potential without being overly intrusive to the user.
• Simple Configuration: All you need to do is add your own AdMob IDs into the configuration file, and you’re ready to start earning. The documentation makes this process a breeze.
• Premium User Option: Offer your users an ad-free experience through a simple one-time In-App Purchase. This provides a recurring revenue stream and caters to users who prefer a premium, uninterrupted experience.

Unmatched Functionality: 75+ Calculators & Converters

The primary value of this app lies in its immense utility. It’s not just one tool; it’s a digital toolbox that users will return to again and again. This high utility translates directly to higher user retention and more opportunities for ad impressions.

The app includes a vast range of modules, such as:

• Standard & Scientific Calculators: For all basic and advanced mathematical needs.
• Unit Converters: Length, Area, Weight, Volume, Temperature, Time, Speed, and more.
• Financial Calculators: Loan, Interest, Discount, GST/VAT, and even a Stock Market calculator.
• Health Calculators: BMI, BMR, and Body Fat calculators to appeal to the health-conscious market.
• Date & Time Calculators: Age Calculator, Date Difference, and Time Adder/Subtractor.

Modern, Clean & Customizable Codebase

This isn’t an outdated or messy project. It’s built for the future of Android development. Written entirely in Kotlin, it follows modern architecture principles, making the code clean, readable, and easy to maintain.

For developers, this means:

• Fast Customization: Easily change the app’s theme, colors, logo, and package name to create a unique, branded product. The clean structure ensures you won’t get lost in a maze of confusing code.
• Future-Proof: Using Kotlin and modern Android Jetpack components ensures your app will be compatible with future Android versions and Google Play policies.
• Excellent Learning Tool: If you’re looking to improve your Kotlin and Android skills, this source code serves as a perfect real-world example of a high-quality, production-ready application.

Who Is This Android App Template For?

This versatile source code is the perfect asset for a wide range of individuals and businesses.

• Indie Developers: Launch your own app on the Google Play Store with a minimal budget and timeline. This template is your shortcut to a passive income stream.
• Entrepreneurs: Have a great app idea but lack the time for development from scratch? Use this as a foundation to quickly build and test your concept.
• Development Agencies: Drastically cut down on development time for client projects. Use this boilerplate to deliver a high-quality utility app faster and more profitably.
• Students and Learners: Deconstruct and study a professional, real-world Android application. It’s an invaluable tool for learning modern development practices, monetization, and app architecture.

Why Choose Our GPL Version? Freedom and Value

You might find this product elsewhere, but our version offers a unique combination of value and freedom that is simply unmatched.

The Smart Choice for Your Budget

Why pay a premium for a single-use license? Our offering provides the exact same high-quality code—originally developed by top-tier creators—at a fraction of the cost. This allows you to allocate your budget towards marketing and other essential business activities.

The Freedom of the GPL License

Our products are distributed under the GNU General Public License (GPL). This doesn’t just save you money; it gives you freedom. You have the liberty to use the code on unlimited projects, modify it as you see fit, and learn from its professional structure without any restrictive licensing getting in your way. It’s an investment in a long-term asset, not a one-time rental.

Frequently Asked Questions (FAQ)

What version of Android Studio is required for this calculator app template?

This source code is designed for modern Android development. It is fully compatible with the latest stable versions of Android Studio. We always recommend using the most recent release to ensure full compatibility with all Gradle plugins and Android Jetpack libraries used in the project.

How do I change the app’s branding and color scheme?

Customization is straightforward. The project includes well-organized resource files (XML) for colors, strings, and themes. You can easily change the primary and accent colors, app name, and logo by modifying these files. The provided documentation walks you through the exact steps for reskinning the app.

Does the All In One Calculator source code include documentation for AdMob setup?

Yes, absolutely. The original developer has included clear documentation that guides you through the entire setup process, including how to integrate your own AdMob Ad Unit IDs. You’ll find instructions on where to place your Banner, Interstitial, and Native Ad IDs to start monetizing your app immediately.

Are updates included with my purchase?

Yes. When you purchase from us, you get access to our secure repository where we provide updates as they become available. We ensure you have the latest version, incorporating new features, bug fixes, and compatibility updates released by the original author, all under the freedom of the GPL.

Is the code in this Android app template safe and authentic?

Safety and authenticity are our top priorities. The All In One Calculator source code we provide is 100% original and has not been altered or modified from the developer’s release. We simply redistribute it under the GPL, giving you access to premium, safe code without the premium price tag.

Can I add or remove specific calculators from the app?

Yes. The project’s modular design makes it possible for an experienced Android developer to add new calculators or remove existing ones. Each calculator is often contained within its own activity or fragment, allowing you to customize the feature set to better suit your target audience or app vision.

Why is this so much cheaper than the official CodeCanyon price?

Our business model is based on the redistribution of software under the GPL. The original developers are paid for their hard work when they sell their products on marketplaces. We purchase the item and, because it’s licensed under the GPL, we are free to share it with others. This model allows us to offer premium products at a significantly lower cost, passing the savings and the freedom of the license directly to you.