Leslie Mathys

currently: learning how to write AI evals

@lesliemathys 163 X followersFirst product launched 2y ago

100% full-depth creator dossier open: complete product portfolio, 12-month combined traffic & MRR curves, shipping cadence, and timeline events.

Revenue

Portfolio · Last 12 months

Verified monthly revenueBuildOnDomains revenue feed stopped at 2026-10-03

Apr 2026

Products and research metrics
Product	Tagline	Category	Visits · Oct	MoM	Launched	Revenue	Actions
BuildOnDomainsbuildondomains.comStop hunting for ideas. Start with the domain name.	Stop hunting for ideas. Start with the domain name.	Marketplaces & Classifieds	<5K	Prev <5K	2026-03	$236
Prompt Formatterpromptformatter.comFree tool for AI users of all skill levels. Structure your prompts in a way that makes them easier for AI to read. Better prompts.	Free tool for AI users of all skill levels. Structure your prompts in a way that makes them easier for AI to read. Better prompts.	Prompts, Evals & LLM Observability	—	—	2024-09	Undisclosed

Launches, marketing, revenue milestones, and pricing/plan/positioning changes across products