Norynth Neural

Domain-specific AI for engineers with 9 intelligence contexts (Robotics, Blockchain, AI/ML, Coding, Medical, Crypto, Research, Infrastructure, General). Built from scratch in PHP 8.3 — no frameworks, no chat SDKs. Features Stripe subscriptions ($9.99/mo Pro), Google OAuth, Groq (Llama 3.3 70B) + OpenRouter fallback, viral referral loops via shared conversations, session persistence, and a performance-optimized UI with <1% CPU idle. Free tier: 50 messages/day, no credit card needed.