Founding Engineer, Y Build

Marcus Tan

Marcus has shipped 40+ production apps with AI tooling and runs the Build Lab experiments — the timed, reproducible head-to-heads behind every Compare and Lab note. Previously built developer platforms at two YC startups.

Follow @marcustan GitHub ↗ Website ↗ Builds on Y Build →

articles

40+

apps built

'24

writing since

Areas of expertise

AI app buildersDeploymentFull-stackBenchmarking

Latest by Marcus

★ Lab 03 · Compare

We built the same app in Bolt, Lovable & Y Build — here's the data

Jun 18, 2026 · 11 min

Read →

01 · Build

Build a booking app with AI in 30 minutes

Jun 12, 2026 · 8 min

Read →

02 · Ship

Deploy an AI-built app to your own domain

Jun 9, 2026 · 6 min

Read →

03 · Compare

Best AI app builders in 2026, ranked

Jun 4, 2026 · 14 min

Read →

01 · Build

Build a mini-CRM for your small business

May 28, 2026 · 10 min

Read →

04 · The Lab

We let 5 AI agents refactor the same codebase

May 24, 2026 · 13 min

Read →

02 · Ship

Custom domains & HTTPS without touching DNS

May 19, 2026 · 5 min

Read →

The expert uses it

Marcus builds every experiment on Y Build

Same tooling, your account. Prompt to a deployed app on your own domain.

Start free →