Nikonomics - The Economics of Small Business 271 - Best of 2025! How to Build and Sell Apps with No Code with Billy Howell
Jan 20, 2026
Billy Howell, founder of Stupid Simple Apps and a no-code aficionado, shares insights on building AI-driven apps. He discusses practical uses of chatbots for small businesses, like streamlining HR and onboarding processes. Key topics include cost-effective methods to create custom chatbots using Replit and OpenAI, managing large data sets with techniques like embeddings, and crafting a Product Requirements Document (PRD) to guide app development. The conversation also touches on innovative ideas for AI-powered consumer games and strategies for monitoring API costs.
AI Snips
Chapters
Transcript
Episode notes
Cheap, Fast Chatbots With Replit
- Use Replit plus an OpenAI key to spin up a custom chatbot quickly and cheaply.
- Offer this as a one-time build or monthly service to local businesses for recurring revenue.
Context Window Is The Real Constraint
- The core bottleneck for document chatbots is the model's context window, not the chat interface.
- Managing which content reaches the model is the critical engineering challenge.
Use Embeddings For Large Corpora
- Use embeddings (RAG) to index large document sets for fast semantic search and cheaper context retrieval.
- Beware: embedding large corpora can be slow and costly if done inefficiently.