okay found it, a bathroom diary app for those who have IBS. It was in a foot note at the very bottom.

appreciatorBus 3 hours ago | parent | next [-]

Yeah it was also oddly hidden away.

> Based on an agentic market research campaign, we vibe coded an app called GutCheck, a bathroom diary for people with IBS. We chose this app for its minimal yet helpful functionality: an iOS app live on the App Store with the RevenueCat MCP and App Store Connect CLI. Saul has full write access to the codebase. We set up the App Store account permissions beforehand to ensure Saul wouldn’t get blocked by Apple human compliance checks. We sourced this idea from Reddit.

	▲	ianburrell 3 hours ago \| parent \| next [-]
		I think this shows the flaws in doing agentic designed apps. This is a really specific market that would be hard to make money from. Many people aren't going to think of using diary, most will use generic tracking app or even just notebook. Those that do won't spend money on it. Another is that they don't have enthusiasm for the idea. Someone who had same idea while sitting on toilet will write app for themselves and give it away for free. They will have connection with IBS groups for promotion. They won't give up after weeks.
	▲	debo_ 3 hours ago \| parent \| prev [-]
		Maybe they were embarrassed that a bathroom tracker was kind of a shit idea

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a34729t 3 hours ago | parent | prev [-]

"in the bottom of a locked filing cabinet stuck in a disused lavatory with a sign on the door saying Beware of the Leopard"