Notes on building.
Guides on mobile apps, web platforms and AI products. Cost breakdowns, stack comparisons and how we ship.
How to Build a Healthcare App (HIPAA Compliant) in 2026
Building a healthcare app means navigating HIPAA regulations, locking down patient data, and integrating with legacy clinical systems. This guide breaks down every phase, from compliance planning to launch, so you can ship a product that actually works in the real world of medicine.
How to build · Feb 3, 2026 · 16 min read
How to Build an E-Commerce App from Scratch in 2026
Template stores plateau fast. Custom e-commerce apps convert 3x better, retain more customers, and let you build experiences no competitor can copy. Here is the full blueprint.
How to build · Feb 3, 2026 · 16 min read
How to Build a Fintech App: Payments, Banking & More
Fintech is booming, but building a financial app means navigating compliance, security, and complex integrations. This guide breaks it all down, including lessons from building POSH ($350M+ in transactions).
How to build · Feb 2, 2026 · 18 min read
How to Build a Fitness & Wellness App in 2026
The fitness app market has crossed $15B and shows no signs of slowing. Whether you want to build a workout tracker, meditation app, or AI coaching platform, this guide covers every decision you need to make before writing a single line of code.
How to build · Feb 2, 2026 · 14 min read
How to Build a Food Delivery App in 2026
Food delivery is a $300B market, and the winners aren't always the biggest players. They're the ones who nail the three-sided coordination problem between customers, restaurants, and drivers. Here's how to build it right.
How to build · Feb 2, 2026 · 16 min read
How to Build a Marketplace App Like Uber or Airbnb
Marketplaces are some of the most valuable businesses ever built. They're also some of the hardest to get right. Here's exactly how to build one that works.
How to build · Feb 2, 2026 · 15 min read
How to Build a Real Estate App in 2026
The best real estate apps solve one problem better than anyone else. Here is exactly how to build one, from MLS data pipelines to AI-powered search, without burning through your budget.
How to build · Feb 2, 2026 · 14 min read
How to Build a SaaS Platform from Scratch in 2026
Recurring revenue. Near-zero marginal costs. Compounding customer value. SaaS is the best business model in software, and this is exactly how you build one.
How to build · Feb 2, 2026 · 16 min read
How to Build a Social Media App in 2026
You don't need to beat Instagram. You need to own a niche. Here's how to build a social platform that attracts a loyal community and keeps them coming back.
How to build · Feb 2, 2026 · 15 min read
How to Build an AI Chatbot for Your Business in 2026
AI chatbots went from frustrating phone trees to genuinely useful assistants in two years. Here's how to build one that actually helps your customers instead of annoying them.
How to build · Feb 2, 2026 · 14 min read
How to Build a Custom CRM System in 2026
Off-the-shelf CRMs drain your budget and force you into rigid workflows. A custom CRM built around your sales process cuts costs, boosts close rates, and gives your team exactly what it needs.
How to build · Feb 1, 2026 · 14 min read
How to Build a Link-in-Bio Platform for Creators in 2026
The creator economy crossed $250B. Link-in-bio platforms sit at the center of it. We have shipped creator tools at scale with sub-100ms load times. Here is exactly how.
How to build · Feb 1, 2026 · 13 min read