Notes on building.
Guides on mobile apps, web platforms and AI products. Cost breakdowns, stack comparisons and how we ship.
How to Build an On-Demand Home Cleaning App Like Handy in 2026
On-demand home cleaning is a $10B+ market growing at 18% annually. Here is how to build the customer booking flow, cleaner dispatch system, and marketplace infrastructure.
How to build · Mar 10, 2026 · 15 min read
How to Build a Childcare and Daycare Booking App in 2026
The childcare market exceeds $500B globally with massive digitization demand. Here is how to build a booking app that daycare providers and parents actually want to use.
How to build · Mar 10, 2026 · 14 min read
How to Build a Project Management Tool Like Linear in 2026
Linear proved that project management tools do not have to be bloated. Here is how to build a fast, focused PM tool with real-time collaboration and modern architecture.
How to build · Mar 10, 2026 · 15 min read
How to Build an AI-Powered Sales Development Rep (SDR) in 2026
AI SDRs like 11x, Artisan, and Clay raised half a billion dollars in 2025, and they are replacing manual outbound at 30% of B2B SaaS companies. Here is exactly how to build one.
How to build · Mar 8, 2026 · 15 min read
How to Build a Notion Alternative with Real-Time Collaboration in 2026
Notion built a $10B company by combining a block editor with flexible databases. Here is exactly how to build your own version that handles real-time collaboration without breaking.
How to build · Mar 8, 2026 · 15 min read
How to Build a Workforce Management App for Deskless Workers in 2026
Deskless workers are 2.7 billion people still stuck managing shifts over group texts. Here is how to build a workforce management platform that actually fixes that problem.
How to build · Mar 8, 2026 · 14 min read
How to Build a Customer Data Platform (CDP) for B2B SaaS in 2026
Segment and mParticle built a $20B category, but founders with warehouse-native stacks and privacy requirements are building their own CDPs. Here is how to architect one that actually scales.
How to build · Mar 8, 2026 · 15 min read
How to Build an Ambient AI Medical Scribe for Healthcare in 2026
Abridge, Ambience, and Nuance DAX are eating the clinical documentation market. Here is the full architecture for building your own ambient AI scribe in 2026.
How to build · Mar 8, 2026 · 15 min read
How to Build an AI-Powered Social Media Scheduler Like Buffer in 2026
Buffer and Hootsuite built a $3B category that AI-native tools like Typefully, Postwise, and Taplio are now disrupting. Here is how to build your own AI social scheduler that wins.
How to build · Mar 8, 2026 · 14 min read
How to Build a Loom Alternative for Async Video Messaging in 2026
Loom sold to Atlassian for $975M, proving async video messaging is a real category. Here is how to build a competing product that actually works at scale.
How to build · Mar 8, 2026 · 14 min read
How to Build a Bookkeeping and Accounting SaaS Like QuickBooks
A complete engineering playbook for building a QuickBooks or Xero alternative that accountants actually trust. Covers ledgers, bank feeds, AI categorization, OCR, tax logic, and reporting.
How to build · Mar 7, 2026 · 15 min read
How to Build a Meditation and Mindfulness App in 2026
Calm and Headspace made meditation apps feel like a solved category. They are not. The Apple Watch era, AI-personalized content, and biometric integration have reset the bar. Here is how to build one that competes.
How to build · Mar 6, 2026 · 12 min read