Language Learning App – Offline Reading, Listening & Quiz

Looking for a ready-made Android language learning app that’s modern, offline, and easy to customize? This complete Language Learning App combines reading, listening, note-taking, and quizzes into one elegant platform. Built with clean Java + XML code, it delivers an engaging experience with full offline functionality and smart ad control via Firebase.

The app offers a smooth and organized layout with a beautiful home screen and a side navigation menu for easy access to all options. Learners can read, listen, highlight words, write notes, adjust text size, and control audio playback speed. Each lesson includes a short quiz to test understanding and boost retention.

Main Features

• Offline learning – all content works without Wi-Fi
• Reading and listening combined in one screen
• Dialog popup for word highlighting and adding notes
• Adjustable text size for better readability
• Highlight any word and add personal notes
• Audio playback with speed control (slow down or speed up)
• Interactive quiz after each lesson
• Daily reminders and Firebase push notifications
• Dynamic ad control from Firebase Remote Config
• Switch between AdMob, Unity Ads, or Start.io remotely
• Light and dark mode toggle from the side menu
• Option to share lessons or the app with others

Support Feature

The app includes a built-in Support section in the side menu that allows users to send feedback or report issues directly via Gmail. This provides an easy and direct communication channel with users without leaving the app.

Technology

• Developed using Android Studio (Java + XML)
• Firebase Remote Config for real-time ad control
• Firebase Cloud Messaging for notifications

Ad Networks

Ad Networks

• AdMob (Banner, Interstitial, Rewarded)
• Unity Ads (Banner, Interstitial, Rewarded)
• Start.io (Banner, Interstitial, Rewarded)
• All ad networks can be switched remotely from Firebase

What You Get

• Full Android Source Code (Java + XML)
• Firebase Remote Config setup for ad management
• Documentation (setup, customization, and publishing guide)
• All assets and configuration instructions

Demo & Preview

Google Play link: View on Play Store
YouTube preview: Watch the demo video

Why Choose This App

This project is ideal for developers or entrepreneurs who want to launch a complete offline language learning app with elegant design, smooth performance, and built-in monetization. Save time, reduce costs, and start publishing right away with this fully functional template.