Andrew Pierno
BuildingAcquiring

I like building

hard things.

Robots, drones, AI that touches the physical world. Sold a surveillance AI startup. Currently a dev at Wonderly.

I also buy and fix broken software companies — 11 acquisitions through xo.capital including 3 YC startups.

SaaS is Dead — I rebuild billion-dollar SaaS products as AI skills. One a week.

0
Patents
0
Acquisitions
0
Exit
0
Projects Shipped
Computer Vision·Robotics·Drones·AI / ML·Chemistry·Medical Billing·SaaS·Computer Vision·Robotics·Drones·AI / ML·Chemistry·Medical Billing·SaaS·

Side Project

💧

thewatermap.com

10x cheaper microplastic testing

by munilabs.ai

See what's in your tap water. We use fluorescence microscopy to reveal microplastics invisible to the naked eye.

As seen on Reddit
r/LosAngeles

"I've now tested tap water for microplastics in 20+ locations across West LA. Here's the contamination map."

109k views390 upvotes
r/PlasticFreeLiving

"I refuse to pay $600 to test my tap water for microplastics, so I built a fluorescence scope in my garage"

35k views141 upvotes
Water qualityMicroplasticsPublic healthmunilabs.ai
SampleFilterStainScopeResults

Patents

Auto-segmentation with rule assignment

US20190370559A1 · 2019

Learning to switch, tune, and retrain AI models

US20190373165A1 · 2019

Detecting changes in object size over long time scales

US20190370560A1 · 2019

Billing data aggregation and forecasting system

US20240296485A1 · 2023

xo.capital

11 acquisitions including 3 YC startups

journey.ioCustomer journey platform
onsched.comScheduling platform
xo.capital

The Graveyard

80+ projects. Most didn't make it.

actionchat.io·evallama.com·alpacaqa.com·tryaskit.com·copilot.sh·endlessposts.com·endlessblog.com·endlessstartups.com

Post-Mortems

thecompiler.io

Killing this project

102
Visitors
233
Page Views
72%
Bounce Rate

noco.io — AI App Builder

March 2025 – Nov 2025

110
Users
0
Successful Builds
$5k
Total Cost

Like what you see?

Join 800 readers

Weekly teardowns of billion-dollar SaaS rebuilt as AI skills.