Notes on building.
Guides on mobile apps, web platforms and AI products. Cost breakdowns, stack comparisons and how we ship.
How to Build a Sports Coaching App With AI Video Analysis
AI video analysis is the feature that separates the coaching apps athletes pay for from the ones they delete after a week. Here is how to build the real thing, from pose estimation pipelines to sport-specific models and the infrastructure that keeps video processing costs from eating your margins.
How to build · Jun 21, 2026 · 14 min read
How to Build Agent-Native Software: APIs, Auth, and Payments
Most software is built for humans. Agent-native software is built for AI agents to consume directly. Here is how to design APIs, auth, billing, and observability that agents can actually use.
How to build · Jun 21, 2026 · 14 min read
How to Build an AI ERP System to Replace SAP or NetSuite
SAP and NetSuite are losing ground to AI-native ERP alternatives that move faster, cost less, and actually fit how modern businesses operate. Here is how to build one.
How to build · Jun 21, 2026 · 14 min read
How Much Does It Cost to Build a Recipe and Meal Planning App?
Recipe and meal planning apps are a proven consumer category with real monetization potential. Here is what you will actually spend to build one, from a bare-bones MVP to a full-featured nutrition platform.
Cost & planning · Jun 20, 2026 · 14 min read
How Much Does It Cost to Replace Your ERP With AI Agents?
Replacing your ERP with purpose-built AI agents is no longer a moonshot. Here is what it actually costs, module by module, and why the math often works out better than another five-year SAP contract.
Cost & planning · Jun 20, 2026 · 14 min read
App Development Cost Calculator: Estimate Your 2026 Budget
Stop guessing what your app will cost. This guide gives you a practical framework to estimate app development costs by type, complexity, region, and feature set, with real numbers from 2026 projects.
Cost & planning · Jun 20, 2026 · 14 min read
How to Build a Stablecoin Payments App for Your Platform
Stablecoins are quietly becoming the default rails for B2B payments, cross-border transfers, and high-volume fintech platforms. Here is a complete technical guide to building stablecoin payment infrastructure from wallet architecture to compliance.
How to build · Jun 20, 2026 · 14 min read
How to Build a Smart Ring Companion App From Scratch in 2026
Smart rings are one of the most technically demanding categories in wearable hardware. The companion app is where users live, and building it well requires mastering BLE communication, health data APIs, sleep algorithm design, and mobile performance. Here is the complete playbook.
How to build · Jun 20, 2026 · 14 min read
How to Build a Car Wash Booking App With Route Optimization
Mobile car wash is a high-margin, repeat-purchase business that maps perfectly onto an on-demand app model. Here is how to build the booking flow, washer dispatch system, and route optimization engine that powers a scalable mobile car wash platform.
How to build · Jun 20, 2026 · 14 min read
How to Build a Digital Detox and Screen Time Management App
Screen time apps like Opal and One Sec have proven that people will pay to use their phones less. Here is how to build a digital detox app that actually changes behavior.
How to build · Jun 19, 2026 · 13 min read
AI Company Brain: Building a Knowledge OS for Your Startup
Your startup's most valuable asset is not code or customers. It is the collective knowledge trapped in Slack threads, Notion pages, and the heads of senior employees. An AI company brain turns all of that into a searchable, queryable operating system for your entire organization.
AI & strategy · Jun 19, 2026 · 14 min read
How to Build Software for AI Agents: APIs and Machine-Readable Docs
AI agents are becoming the primary consumers of your APIs. This guide covers everything from structured responses and machine-readable documentation to authentication, rate limiting, and testing with real agents.
AI & strategy · Jun 19, 2026 · 14 min read