Notes on building.
Guides on mobile apps, web platforms and AI products. Cost breakdowns, stack comparisons and how we ship.
Sentry vs LogRocket vs FullStory: Session Replay Tools in 2026
Session replay shows you exactly what users experienced before a bug or drop-off. Here is how Sentry, LogRocket, and FullStory compare for debugging, product analytics, and user experience monitoring.
Technology · Mar 21, 2026 · 13 min read
How to Build an AI Research Agent Like Perplexity or Claude 2026
AI research agents that search, synthesize, and cite are redefining how people find information. Here is the technical architecture for building a vertical research tool with agent loops and tool use.
AI & strategy · Mar 21, 2026 · 15 min read
AI Vendor Contracts and SLAs: A 2026 Playbook for Startups
73% of startups report unclear terms in AI vendor contracts. Here is the playbook for negotiating data ownership, model versioning SLAs, price protections, and exit rights with LLM providers.
AI & strategy · Mar 21, 2026 · 13 min read
How to Build a Production-Grade Prompt Management System 2026
Prompt management is the hidden infrastructure challenge for production AI. Here is how to build a system for versioning, testing, evaluating, and deploying prompts at scale.
AI & strategy · Mar 21, 2026 · 14 min read
AI for Legal Operations: Contract Review and eDiscovery 2026
Legal operations teams are using AI to cut contract review time by 60% and eDiscovery costs by 40%. Here is what works, what does not, and how to implement AI in your legal department.
AI & strategy · Mar 21, 2026 · 14 min read
How Much Does It Cost to Build a Second Brain Note App in 2026?
Second brain apps like Reflect, Tana, and Mem are the hottest productivity category in 2026. Here is what it costs to build one with AI-powered linking, graph visualization, and real-time sync.
Cost & planning · Mar 20, 2026 · 13 min read
How to Build an AI Legal Assistant for Contract Review in 2026
AI legal assistants that actually help lawyers need domain-specific RAG, precise citation, and bulletproof compliance. Here is the technical playbook for building one that earns attorney trust.
How to build · Mar 20, 2026 · 15 min read
How to Build a Shopify App and Get Approved by the App Store
Shopify has 4.6 million merchants and a partner ecosystem generating $2B+ in annual revenue. Here is how to build an app that passes review, attracts merchants, and generates recurring revenue.
How to build · Mar 20, 2026 · 15 min read
How to Build a BNPL (Buy Now Pay Later) App Like Affirm in 2026
BNPL apps combine payments, lending, and compliance in one product. Here is the technical playbook for building a buy now, pay later platform that can legally originate loans and scale.
How to build · Mar 20, 2026 · 15 min read
How to Build a Webinar and Live Event Platform Like Zoom 2026
Webinar platforms require solving video delivery, real-time interaction, and recording at scale. Here is the technical architecture for building one that handles thousands of concurrent attendees.
How to build · Mar 20, 2026 · 15 min read
How to Build a Second Brain Note-Taking App Like Reflect 2026
Second brain apps like Reflect, Tana, and Mem combine block-based editing with AI-powered knowledge retrieval. Here is the technical architecture for building one from scratch.
How to build · Mar 20, 2026 · 15 min read
How to Build a Restaurant Reservation App Like OpenTable 2026
OpenTable's dominance is being challenged by Resy, Tock, and SevenRooms. Here is how to build a restaurant reservation platform with modern table management and guest experience features.
How to build · Mar 20, 2026 · 14 min read