Notes on building.
Guides on mobile apps, web platforms and AI products. Cost breakdowns, stack comparisons and how we ship.
How to Build an AI Shopping Agent With Agentic Checkout 2026
AI shopping agents that browse, compare, and purchase autonomously are replacing traditional cart-based flows. This guide walks through the full architecture: LLM orchestrator, tool-use layer, product APIs, payment rails, and the trust and safety systems that make agentic checkout production-ready.
How to build · Aug 14, 2026 · 15 min read
How to Build Apps for Foldable Devices: Adaptive UI Guide
Foldable devices like the Galaxy Z Fold and Pixel Fold are no longer niche. This guide covers the APIs, design patterns, and testing strategies you need to build adaptive UI that works seamlessly across folded, unfolded, and table-top postures.
How to build · Aug 14, 2026 · 14 min read
How to Embed AI Features Into Your Existing SaaS Product
Your SaaS product does not need a ground-up rebuild to deliver AI-powered experiences. This guide covers which AI features to add first, how to architect them alongside your existing codebase, and how to roll them out without breaking what already works.
How to build · Aug 14, 2026 · 15 min read
How to Build a Reverse Marketplace App (Buyers Post Needs)
In a reverse marketplace, buyers describe what they need and sellers compete to win the job. Platforms like Thumbtack, Bark, and Upwork have proven this model works. Here is exactly how to build one from scratch.
How to build · Aug 14, 2026 · 14 min read
AI for Product Discovery and User Research Automation 2026
Product teams are drowning in research data they never fully analyze. AI-powered discovery tools now extract themes from dozens of interviews, detect friction in session recordings, and score opportunities automatically.
AI & strategy · Aug 13, 2026 · 14 min read
How Much Does It Cost to Build an App for Foldable Devices?
Building for foldable devices adds 20 to 40% to standard mobile app costs. This guide covers adaptive UI, hinge-aware APIs, multi-screen layouts, and realistic budgets from $50K to $200K+.
Cost & planning · Aug 13, 2026 · 14 min read
How Much Does a Product Redesign Sprint Cost for Startups?
A product redesign sprint can cost anywhere from $15,000 for a focused five-day engagement to $80,000+ for a comprehensive two-week sprint with user research and validated prototyping. Here is what drives the price and how to get the most value from every dollar.
Cost & planning · Aug 13, 2026 · 13 min read
How Much Does It Cost to Build an AI Shopping Agent in 2026?
Building an AI shopping agent that browses, compares, and buys products on behalf of your users costs $80K to $300K+ depending on scope. This guide breaks down every cost layer, from LLM inference to payment orchestration, so you can budget accurately.
Cost & planning · Aug 13, 2026 · 14 min read
How Much Does Adaptive Multi-Device UI Development Cost?
Building a UI that works beautifully on phones, tablets, desktops, foldables, and wearables costs $30K to $150K+ depending on device coverage and design system maturity. This guide breaks down where your money goes and how to budget wisely.
Cost & planning · Aug 13, 2026 · 13 min read
Composio vs Toolhouse vs Arcade AI: Agent Tool Platforms 2026
Your AI agents need to call real APIs, but building and maintaining hundreds of tool integrations yourself is a losing game. Here is how Composio, Toolhouse, and Arcade AI stack up as managed tool platforms for production agent systems.
Technology · Aug 12, 2026 · 14 min read
Post-MVP Scaling: The Startup Playbook for Growing Past V1
Your MVP proved the idea works. Now comes the harder part: scaling it without burning cash, breaking what works, or losing the speed that got you here.
Technology · Aug 12, 2026 · 15 min read
Infrastructure as Code for Startups: Terraform and Pulumi Guide
Clicking through the AWS console to recreate your production environment is not a strategy. Infrastructure as code turns your cloud setup into version-controlled, reviewable, repeatable configuration that any engineer on the team can understand and modify.
Technology · Aug 12, 2026 · 14 min read