You check the weather before you leave. You can’t check the temperature inside the place you’re going. WhatTemp makes the indoor climate of every public space a searchable, trustworthy data point — a free consumer app on top, a defensible data company underneath.
Indoor temperature is the most-felt, least-published fact about a venue. “Bring a sweater” is folklore, not data — and no one owns the answer at the moment you’re deciding what to wear.
Connected thermostats sit in most commercial spaces and expose official read-only APIs. The sensors are already online; the neutral layer that aggregates and publishes them doesn’t exist yet.
Free app: geolocated indoor temps, plain-language verdict, search. Then the expansion — opt-in wearables (WHOOP, Garmin, Apple, Oura) teach us what temperature the human body actually prefers. The first dataset joining climate to physiology.
Free for consumers and for venues to publish (coverage is the asset). Revenue: $9/mo Venue Pro, the $29 WhatTemp Sensor (hardware for spaces with no smart thermostat), a licensed API to maps & search, and anonymized comfort analytics for chains.
Four assets no thermostat maker and no map will build neutrally: (1) the cross-vendor aggregation layer — one normalized reading from many incompatible APIs; (2) the “Indoor Temperature” schema & the verified dataset that fills it — own the standard, own the category; (3) confidence & verification scoring; (4) the comfort model — patent-pending territory. Already built: working multi-surface product, published schema with a live reference API, and pilot-ready thermostat OAuth.
Incorporate · provisional patent + trademark filed · 25-venue pilot live with real thermostat OAuth · Google-panel proof.
One metro at density · 25k+ users · first API/partner LOI · comfort model v1 from opt-in wearables.
100k+ users · paid Venue Pro + first licensed-API revenue · seed/Series-A raise on traction + dataset.