Notes on building.
Guides on mobile apps, web platforms and AI products. Cost breakdowns, stack comparisons and how we ship.
How to Build a Femtech Women's Health Tracking App in 2026
The femtech market is projected to reach $60B by 2027 and represents one of the strongest growth categories in mobile health. Here is how to build a women's health tracking app that actually serves your users well.
How to build · Apr 27, 2026 · 15 min read
The PM's Guide to Shipping AI Features That Users Actually Want
Most AI features die quietly. Users try them once and never come back. The problem is not the model. It is the product thinking behind it. Here is what separates AI features that stick from the ones gathering dust in your analytics.
AI & strategy · Apr 26, 2026 · 14 min read
How to Build an AI Spreadsheet and Data Analysis Tool in 2026
Spreadsheets are still the backbone of business analysis, but they are brutal at scale. Here is how to build an AI-powered spreadsheet tool that lets users analyze data with natural language instead of wrestling with VLOOKUP formulas.
How to build · Apr 26, 2026 · 15 min read
How to Build a Real-Time AI Translation and Localization App
Real-time translation used to require million-dollar budgets and dedicated ML teams. In 2026, you can ship a production-grade multilingual app in 8 to 12 weeks with the right architecture and vendor stack.
How to build · Apr 26, 2026 · 15 min read
How to Build an AI-Powered Code Review Pipeline for Dev Teams
Manual code reviews are slow, inconsistent, and drain your senior engineers. Here is how to build an AI-powered code review pipeline that catches real bugs, enforces standards, and ships faster.
How to build · Apr 26, 2026 · 15 min read
How to Build an AI-Powered Photo and Video Editing App in 2026
AI editing tools are eating Adobe's lunch. Here is how to build a production-grade photo and video editing app with generative AI, from model selection to GPU infrastructure to monetization.
How to build · Apr 26, 2026 · 15 min read
How to Build a Real-Time Collaboration Whiteboard App in 2026
Whiteboard apps sit at the intersection of real-time sync, canvas rendering, and spatial data structures. Here is how to build one without reinventing Figma from scratch.
How to build · Apr 26, 2026 · 15 min read
Helicone vs Portkey vs LiteLLM: LLM Proxy Gateways Compared
Choosing the wrong LLM proxy gateway costs you months of migration pain and thousands in avoidable spend. Here is how Helicone, Portkey, and LiteLLM actually compare on the dimensions that matter.
Technology · Apr 26, 2026 · 14 min read
Mastra vs CrewAI vs LangGraph: Multi-Agent AI Frameworks 2026
Three frameworks dominate multi-agent AI development in 2026. Here is a practical, opinionated comparison of Mastra, CrewAI, and LangGraph for teams shipping agent systems to production.
Technology · Apr 26, 2026 · 14 min read
Mintlify vs Readme vs GitBook: API Documentation for Startups
Choosing the wrong docs platform costs you months and frustrates developers. Here is a direct comparison of Mintlify, Readme, and GitBook so you can pick the right one for your API.
Technology · Apr 26, 2026 · 14 min read
Multi-Region Deployment Architecture for Global Startups 2026
Your users in Tokyo are waiting 400ms for every API call because your servers sit in us-east-1. Here is how to architect a multi-region deployment that actually works without burning through your runway.
Technology · Apr 26, 2026 · 14 min read
Streaming AI Responses: SSE, WebSockets, and AI SDK Patterns 2026
Streaming is not a nice-to-have for AI products. It is the difference between a UI that feels alive and one that feels broken. Here is how to implement it correctly with SSE, WebSockets, and the Vercel AI SDK.
Technology · Apr 25, 2026 · 14 min read