Spark turns your Android phone into a powerful AI chat companion by running Large Language Models directly on your device. Chat privately with no cloud dependencies, and even use it as a local API server for your applications. ⚠️ Early Development Notice: Spark is in active development and things are moving fast! If you encounter any bugs or issues, please help us improve by: 🐛 Opening an issue 💬 Reporting it in our Discord community Your feedback is incredibly valuable in making Spark better for everyone! ✨ Features 💬 Private Chat: Have conversations with AI models running 100% on your device 🤖 Multiple Models: Choose from small (0.5GB) to powerful (4GB+) models 🌐 Local API: Use as a drop-in replacement for OpenAI's API in your apps 🎨 Beautiful UI: Modern Material You design with dark mode 🔄 Easy Updates: One-click model downloads from HuggingFace 🔒 Full Privacy: No data leaves your device 📱 Requirements Android 8.1 or newer 64-bit processor (ARMv8) Storage: 2GB+ free space RAM: Minimum: 3GB free RAM Recommended: 6GB+ for larger models High-end: 8GB+ for multimodal models 🤖 Available Models Multimodal Models Gemma-3n-E2B-it (3.0GB) Vision + Text capabilities 4096 token context Needs 8GB RAM Gemma-3n-E4B-it (4.2GB) Enhanced multimodal model 4096 token context Needs 9GB RAM Text Models Gemma3-1B-IT (0.5GB) ⭐ Fast & lightweight 2048 token context Only needs 4GB RAM Qwen2.5-1.5B (1.5GB) Strong multilingual support 1280 token context Needs 6GB RAM DeepSeek R1 (1.5GB) Best for reasoning tasks 1280 token context Needs 6GB RAM 🚀 Getting Started 1. Install Spark from Latest Release 2. Open app and go to Models tab 3. Download a model (start with Gemma3-1B-IT for best compatibility) 4. Create a new chat and start talking! 🌐 Using the API The API server lets you use Spark models in your own apps as a local alternative to OpenAI's API. 1. In Spark app: Load your chosen model Go to Server tab Start server and note your phone's IP address 2. In your application: Replace localhost with your phone's IP Use standard OpenAI API format: 🔗 Links Discord Community Report Issues Latest Release