Notes on building.
Guides on mobile apps, web platforms and AI products. Cost breakdowns, stack comparisons and how we ship.
When to Rewrite vs Refactor Your Startup's Codebase in 2026
Every founding team eventually stares at their codebase and wonders: should we fix what we have or burn it down and start over? The wrong choice can cost you six figures and a year of runway.
AI & strategy · May 19, 2026 · 14 min read
How Much Does It Cost to Build a Logistics Platform in 2026?
Building a logistics platform means stitching together real-time tracking, route optimization, warehouse management, and carrier APIs into one system. Here is what it actually costs.
Cost & planning · May 19, 2026 · 14 min read
How Much Does It Cost to Build a Quiz and Assessment Platform?
Quiz and assessment platforms power everything from corporate training to standardized testing. Here is what it actually costs to build one, from a simple quiz tool to an enterprise-grade assessment engine.
Cost & planning · May 19, 2026 · 13 min read
How Much Does It Cost to Build a Sports Coaching App in 2026?
A sports coaching app can range from $50K for a basic drill library and scheduling tool to $450K+ for a platform with AI-powered video analysis, athlete performance tracking, and real-time communication. Here is what drives those numbers and how to budget wisely.
Cost & planning · May 19, 2026 · 13 min read
How to Build an Android XR App for Smart Glasses From Scratch
Android XR is Google's bet on spatial computing for lightweight wearables. If you want to reach the largest possible audience with a smart glasses app, this open ecosystem is the place to build.
How to build · May 18, 2026 · 15 min read
How to Build a Voice Commerce App With Conversational AI 2026
Voice commerce is moving from novelty to necessity as consumers expect to shop, reorder, and check out entirely by speaking. This guide breaks down exactly how to build a conversational AI shopping app that actually converts.
How to build · May 18, 2026 · 14 min read
How to Build an AI Contract Negotiation and Redlining Tool
Enterprise legal teams spend 8 to 14 hours manually redlining a single contract, and 83% of in-house counsel say contract review is their biggest bottleneck. An AI contract negotiation and redlining tool can cut that cycle from days to minutes while catching risks human reviewers miss.
How to build · May 18, 2026 · 15 min read
How to Build an AI-Powered Waitlist and Launch Page Platform
A great waitlist page does more than collect emails. Built right, an AI-powered launch platform qualifies leads, personalizes messaging, and builds momentum before you ship a single feature.
How to build · May 18, 2026 · 13 min read
How to Build a Vertical AI Writing Tool for Regulated Industries
Horizontal AI writing tools fall apart in regulated industries. If you want to build something that legal, healthcare, or financial services teams actually trust, you need compliance baked into the architecture from day one.
How to build · May 18, 2026 · 14 min read
How to Build an AI-Powered A/B Testing and Experimentation Engine
Traditional A/B testing wastes traffic on losing variants for weeks. An AI-powered experimentation engine reallocates traffic in real time, finds winners faster, and compounds growth gains automatically.
How to build · May 18, 2026 · 14 min read
How to Build an AI Agent for Enterprise Procurement Approvals
Enterprise procurement approvals are drowning in manual bottlenecks, delayed POs, and inconsistent policy enforcement. Here is how to build an AI agent that handles the entire workflow from request to signed approval.
How to build · May 18, 2026 · 14 min read
Cursor vs Windsurf vs Claude Code: AI Coding Agents Mid-2026
Six months changed everything. Cursor shipped background agents, Claude Code added hooks and sub-agents, and Windsurf rebuilt its engine from scratch. Here is where each tool stands heading into the second half of 2026.
Technology · May 18, 2026 · 16 min read