The latest articles on DEV Community by 孔张 (@_9044a89663ae428addd41d). https://dev.to/_9044a89663ae428addd41d https://media2.dev.to/dynamic/image/width=90,height=90,fit=cover,gravity=auto,format=auto/https:%2F%2Fdev-to-uploads.s3.us-east-2.amazonaws.com%2Fuploads%2Fuser%2Fprofile_image%2F3949183%2Fcd257776-6457-4b52-aaff-280a5f404f67.png https://dev.to/_9044a89663ae428addd41d en 孔张 Sun, 24 May 2026 14:55:24 +0000 https://dev.to/_9044a89663ae428addd41d/i-built-an-ai-palm-reader-based-on-100-year-old-books-heres-what-happened-139k https://dev.to/_9044a89663ae428addd41d/i-built-an-ai-palm-reader-based-on-100-year-old-books-heres-what-happened-139k <h1> I built an AI palm reader based on 100-year-old books — here's what happened </h1> <p>Hey everyone 👋</p> <p>I've been fascinated by palmistry for years, but every AI palm reader I tried was just ChatGPT making stuff up. So I built something different.</p> <h2> What is Palmlines? </h2> <p>An AI palm reader that's actually trained on classical sources:</p> <ul> <li><p>Cheiro's "Palmistry for All" (1916)</p></li> <li><p>Indian Palmistry by Mrs. J.B. Dale (1895)</p></li> </ul> <p>Not generic LLM guesses. Real palmistry frameworks that have been used for over a century.</p> <h2> How it works </h2> <ol> <li><p>Upload a photo of your palm</p></li> <li><p>AI analyzes the major lines (Heart, Head, Life, Fate)</p></li> <li><p>You get a detailed reading with source citations</p></li> </ol> <p>The AI doesn't just guess — it references actual passages from these books to explain what it sees.</p> <h2> Why I built this </h2> <p>Every other AI palm reader I tested gave vague, generic answers like "you're a creative person" regardless of the photo. I wanted to build something that would:</p> <ul> <li><p>Actually analyze the specific lines on YOUR palm</p></li> <li><p>Reference real palmistry knowledge (not made up)</p></li> <li><p>Explain the reasoning behind each interpretation</p></li> </ul> <h2> Tech stack </h2> <ul> <li><p>Next.js (App Router) with SSR</p></li> <li><p>OpenAI Vision API for palm analysis</p></li> <li><p>Vercel deployment</p></li> <li><p>Stripe for payments</p></li> </ul> <h2> Results so far </h2> <ul> <li><p>Launched 3 weeks ago</p></li> <li><p>5 free readings per day (freemium model)</p></li> <li><p>Working on SEO content to target long-tail keywords like "marriage line meaning" and "how to read palm lines"</p></li> </ul> <h2> What I learned </h2> <ol> <li><p><strong>AI + domain expertise &gt; generic AI</strong> — Training on specific sources gives much better results than generic prompts</p></li> <li><p><strong>Free tier is essential</strong> — People won't pay $1.99 without trying it first</p></li> <li><p><strong>Content is king</strong> — My biggest bottleneck is content, not code</p></li> </ol> <h2> Feedback wanted </h2> <ul> <li><p>Would you use this? Why or why not?</p></li> <li><p>Any suggestions for getting traffic without paid ads?</p></li> </ul> <p>Try it out: <a href="https://palmlines.co/" rel="noopener noreferrer">palmlines.co</a></p> <p>Happy to answer any questions about the tech, the business model, or palmistry in general!</p> ai webdev