Notes on building.
Guides on mobile apps, web platforms and AI products. Cost breakdowns, stack comparisons and how we ship.
How to Build a Scooter and Bike Sharing App Like Lime in 2026
The micro-mobility market is on track to surpass $215 billion by 2030, and Lime, Bird, and Tier do not own every city. Here is how to build a scooter and bike sharing platform from IoT hardware integration to regulatory launch.
How to build · Apr 4, 2026 · 15 min read
How to Build an AI Coworker Platform for Team Productivity
AI coworkers are not chatbots with fancy names. They are autonomous teammates that remember context, use real tools, and collaborate across your org. Here is how to build a platform that actually works.
How to build · Apr 4, 2026 · 15 min read
How to Build a PropTech Investment and Crowdfunding Platform
Platforms like Fundrise make real estate investing look effortless. Behind the scenes, it's a tangle of securities law, waterfall math, and tax documents. Here's how to actually build one.
How to build · Apr 4, 2026 · 15 min read
How to Build a Sports Fan Engagement App with Live Features
Sports fans crave more than just watching the game. They want to predict plays, trash-talk friends, collect digital memorabilia, and feel like they're part of the action. Here's how to build an app that delivers all of that.
How to build · Apr 4, 2026 · 15 min read
How to Build a Renewable Energy Monitoring Dashboard in 2026
Renewable energy operators are drowning in data from inverters, batteries, weather stations, and grid meters. A well-built monitoring dashboard turns that firehose into actionable insight that saves thousands per month.
How to build · Apr 4, 2026 · 14 min read
How to Build a Digital Therapeutics App with FDA Compliance
Building a prescription digital therapeutic means navigating FDA regulatory pathways, designing clinically validated treatment protocols, and integrating with the healthcare systems that prescribe and reimburse your product. Here is how to do it right.
How to build · Apr 3, 2026 · 15 min read
How to Build a 3D Product Configurator for E-Commerce in 2026
3D product configurators increase conversion by 40% and reduce returns by 35%. Here is how to actually build one that performs on mobile and plugs into your commerce stack.
How to build · Apr 3, 2026 · 14 min read
How to Build an AI Tenant Screening and Verification Platform
Fake pay stubs cost landlords thousands per bad tenant. Here is how to build an AI-powered screening platform that catches fraud, automates verification, and stays compliant with Fair Housing and FCRA requirements.
How to build · Apr 2, 2026 · 15 min read
How to Build a Digital Wellness and Screen Time Tracking App
Average screen time hit 7+ hours per day in 2026, and people are finally fed up. Here is how to build a digital wellness app that actually changes behavior instead of just guilt-tripping users.
How to build · Apr 2, 2026 · 15 min read
How to Build a Precision Agriculture App with IoT and AI in 2026
YC just called precision agriculture a generational opportunity, and they are right. Here is how to actually build the IoT and AI stack that delivers 20 to 30% input savings for farmers.
How to build · Apr 2, 2026 · 15 min read
How to Build an AI Agentic App Using MCP and Tool Use in 2026
Forty percent of enterprise apps are expected to feature AI agents by the end of 2026. Here is how to actually build one using MCP, tool calling, and production-grade agentic patterns.
How to build · Apr 2, 2026 · 16 min read
How to Build an EV Fleet Management and Charging App in 2026
EV total cost of ownership just dropped below diesel for most commercial fleets. Here is how to build the software that actually makes electrification work at scale.
How to build · Apr 2, 2026 · 15 min read