Learnmate AI | Flutter AI Language Learning & Tutor App with Voice Call & RevenueCat Paywall

Learnmate AI is a modern mobile platform built for interactive, conversational language study. Utilizing fast LLM inference alongside intelligent conversational fallbacks, the app empowers users to practice spoken dialogue, engage in simulated voice calls, master regional accents, and retain essential vocabulary through structured repetition tools.Developed with Clean Architecture and Riverpod State Management, Learnmate AI comes pre-integrated with RevenueCat In-App Subscriptions (Weekly, Monthly, Yearly), enabling publishers to deploy a fully monetized Free vs. Pro tier business immediately.Important Note on Third-Party API Services & Costs: Learnmate product integrates external APIs from Groq and OpenAI for LLM inference, as well as RevenueCat for managing purchase receipts. Buyers must register their own developer accounts with these service providers. Using these external third-party services is subject to their individual pricing models and will generate ongoing operational API costs based on your active user volume and token usage.Key Features & FunctionalityDual Intelligence Engine: High-performance chat responses leveraging Llama 3 via Groq with an automated GPT-4o-mini fallback layer.Interactive Voice Calling: Real-time spoken dialogue practice with native speaker personas via integrated Text-to-Speech (TTS).Localized Speaker Personas: Targeted cultural and regional dialogue practice for Spanish, French, German, Japanese, Italian, Mandarin, Korean, and English.RevenueCat Paywall Ready: Pre-built subscription UI with flexible Weekly, Monthly, and Annual payment setups.Smart Vocabulary Vault: Daily curated terms, audio playback, custom study decks, and spaced repetition tracking.Instant Translation & Grammar Notes: Tap-to-translate functionality with immediate grammar and syntax breakdowns.Dark Glassmorphism Interface: High-retention UI crafted for clarity, smooth navigation, and immersion.Monetization & In-App Subscriptions (RevenueCat Pre-Integrated) Deploy a recurring subscription revenue model instantly. Learnmate AI includes a built-in paywall gating system:Feature Free Tier Pro TierDaily Chat Interactions 3 Messages / Day Unlimited AccessSpoken Voice Calling Locked Unlimited Voice CallsLanguage Personas 1 Base Persona Unlock All PersonasSaved Vocabulary Vault Max 3 Saved Words Unlimited FlashcardsSupported Languages & Dialect PersonasSpanish: Castilian, Mexican & AndalusianFrench: Parisian, Bordeaux Sommelier & RivieraGerman: Standard Hochdeutsch & BavarianJapanese: Tokyo Standard & Kyoto Tea HouseItalian: Roman Chef & Milan Fashion StylistMandarin: Standard Putonghua & ShanghaiKorean: Seoul K-Pop & Busan BaristaEnglish: British RP & American AccentTechnical Specifications & StackFlutter Framework (v3.29+): Single unified codebase for iOS & Android.Architecture: Riverpod state management adhering to MVVM design principles.Configuration Management: Secure externalized .env file setup for API keys and service endpoints.Local Storage: Fast local caching powered by Hive and SharedPreferences for offline speed.Speech Synthesis: Native multi-language Text-to-Speech (TTS) integration.Package ContentsComplete Flutter Source Code (Dart) Step-by-Step HTML Documentation & Setup Guide Sample .env Configuration File Complete UI Asset Library & IconsSupport & Assistance Need assistance or have pre-sale questions? Reach out directly via our Envato Author profile contact form for dedicated support.AI Technology Disclosure This application utilizes Artificial Intelligence (AI) technologies to power its core interactive features:OpenAI (GPT-4o-mini): Generates contextual conversational dialogues, grammar corrections, and language translations.Groq AI (LLaMA 3.3 70B): Delivers ultra-low latency real-time AI tutor interactions and vocabulary discovery.Server-Side Proxy Architecture: All AI requests are routed through a secure, included backend proxy to protect buyer API keys.Note: Buyers are responsible for maintaining their own OpenAI and Groq API keys and any associated usage billing.