Andrew Pierno
BuildingAcquiring

I like building

hard things.

Especially when they're physical. Sold a computer vision startup. Currently building a microplastics testing kit, writing code at Wonderly, and buying software companies through xo.capital.

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

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Patents
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Acquisitions
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Exits
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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
🤖

Heath Ledger

AI Skill

AI bookkeeping agent for Mercury bank accounts. Every SaaS could be an AI agent skill instead.

Patents

Billing data aggregation and forecasting system

US20240296485A1 · 2023

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

xo.capital

11 acquisitions including 3 YC startups

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

The Graveyard

4 of 83 projects made money.

~5% hit rate. The rest are here.

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Dark Tower
Sold
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supersend.io
Sold
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actionchat.io
†
evallama.com
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alpacaqa.com
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tryaskit.com
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copilot.sh
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endlessposts.com
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endlessblog.com
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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

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