... recently built DigitHelm ( digithelm.com ) - a collection of 300+ free online math, science, and finance calculators. No sign-up, no paywalls, no downloads. Everything runs directly in your browser. Tools cover everything from basic arithmetic to compound interest, BMI, quadratic equations, statistics, physics, and chemistry. Built it because most calculator sites are either too cluttered or hide results behind paywalls. I wanted something fast, clean, and genuinely free. Happy to connect with other indie makers here. What are you all building ...

... first, what is MCP? MCP Servers, often called the USB-C of AI systems, have had a meteoric rise in 2025. And the reason is plain to see. Without MCP, the complexity of integrating AI with external systems rises quadratically (esp. with the proliferation of AI agents). With MCP, it only increases linearly. Practically, what this means is that you can connect your AI agents with any external data/tool source that exposes its functionality as per the standards ...

... actually performed better in one key area. While 3.7 is more advanced in many ways, I've found it to be too docile - it rarely pushes back on questionable requests. Claude 3.5, on the other hand, would often suggest alternative (and frankly better) approaches when my initial idea wasn't optimal. This constructive resistance from 3.5 led to better outcomes in my development process. I value an AI assistant that acts as a thoughtful collaborator rather than just following instructions ... ... more complete structure. On the other hand, 3.5 tends to be simpler and more bare-bones. Comment from Victoria Wu(@victoria_wu): @timoteolapa  Yeah. It's super cool! Comment from Christian Safka(@christian_safka): From testing 3.7 vs