SmartChat AI – Android App with OCR Image-to-Text, TTS & Custom API Keys

SmartChat AI is a premium, ready-to-publish Android application that puts the power of multiple state-of-the-art AI models directly in the hands of your users. Designed with a gorgeous, high-end user interface and packed with essential features like OCR image text extraction and Text-to-Speech (TTS), this app provides a private, fast, and completely customizable AI experience.

Unlike standard AI chat apps that lock users into expensive subscriptions, SmartChat AI allows users to input their own custom API keys for OpenAI, Google Gemini, Anthropic Claude, and OpenRouter. It is the ultimate templates solution for developers, agencies, or entrepreneurs looking to launch a highly desirable, monetizable AI app on the Google Play Store.

Supported AI Providers & Models

• OpenAI: Supports GPT-4o, GPT-4, GPT-3.5-Turbo and custom models.
• Google Gemini: Fast, smart response generation using official Gemini models.
• Anthropic Claude: Highly precise reasoning and text generation with Claude keys.
• OpenRouter: Connects users to over 100+ open-source and proprietary models (including Llama, Mistral, DeepSeek) through a single API platform.

Key Premium Features

• OCR (Optical Character Recognition): Users can capture images using the camera or import them from the gallery to extract text instantly and feed it directly into the AI chat.
• Text-to-Speech (TTS): High-fidelity audio playback allows users to listen to AI responses, making the app highly accessible and hands-free.
• Custom API Key System: Protects your backend expenses. Users can choose to use their own credentials, securely stored locally inside the Android Room Database.
• Premium UI/UX Theme: Styled with the Electric Indigo and Cyber Cyan palette. Features smooth animations, clean typography, responsive sidebar navigation, and a modern Ice White light mode.
• AdMob Integration: Ready for monetization with pre-configured Banner, Interstitial, and App Open ads. Turn free users into revenue.
• Room Database: Keeps all conversation histories, private keys, and saved settings saved securely on-device.

Technical Information & Architecture

• Native Android: Developed using Java/Kotlin with Android SDK targeting Android 14 and 15 (Target SDK 34/35).
• Retrofit 2: Clean and efficient REST API calls to OpenAI, Gemini, Claude, and OpenRouter endpoints.
• Android Data Binding: Modern architectural binding pattern for clean UI layout interaction.
• RTL Support: Fully optimized layout support for Right-to-Left languages.
• Fully Documented: Includes an elite, single-page interactive HTML user manual for rapid setup and custom rebranding.

What is Included in the Download Package?

• Complete Android Studio Source Code Project (Ready to import and compile).
• Premium, responsive HTML Documentation with step-by-step customization guides.
• Dummy config files (including google-services.json) to quickly test out compilation.

Easy Customization & Rebranding Steps

1. Import the project into Android Studio.
2. Change the application namespace and package name to your own branding.
3. Replace the dummy AdMob IDs with your official AdMob credentials in strings.xml and AndroidManifest.xml.
4. Export your final signed APK or Android App Bundle (AAB) and publish it directly to the Google Play Store.