WhatTemp

The temperature layer for the physical world.

Know the temperature inside a place before you walk in — and learn what temperature your body actually prefers.

Investor Presentation · Confidential · 2026

The problem

“Will I need a sweater?” is the most-asked, least-answerable question before you leave the house.

Indoor temperature is the most-felt, least-published fact about a venue. It’s folklore, not data — no one owns the answer, so no one can show it to you at the moment you’re deciding what to wear.

The product

Open it, and it just knows.

Geolocates you, shows nearby venues’ live indoor temps with a plain-language verdict, and lets you search any place. Free, forever, for the consumer.

64°

live, not guessed

3 sources

sensor · crowd · estimate

The distribution unlock

The temperature shows up where people already look.

A venue opts in once and its reading flows into its Google panel, Maps, and any geo search — not just our app. We own the data pipe and the “Indoor temperature” schema feeding it.

google.com/search?q=o+cinema+south+beach

The supply side

One toggle. Public everywhere.

Venues connect a thermostat they already own (Nest, ecobee, Honeywell, SmartThings), read-only, and flip it public. No smart thermostat? We ship a $29 Wi-Fi sensor that does the same in two minutes — so every space can join. Free to publish; coverage is the whole asset.

The expansion · the data company

From “what’s the temperature” to “what the body prefers.”

Opt-in wearable signals (WHOOP, Garmin, Apple Health, Oura) let us learn each person’s comfort range — and, in aggregate, the temperature a real human body actually likes in a given space. Anonymized. Never individual. The first comfort dataset that joins climate to physiology.

WHOOPGarminApple HealthOura

Plan-ahead · the daily hook

It checks the venue before you even leave.

Sync calendar and tickets and WhatTemp gets ahead of you: “Beyoncé tonight at the Fillmore — it’s 67° inside, bring a sweater.” The temperature, surfaced the moment it’s useful. This is the reason to open the app every day.

Apple CalendarGoogle CalendarTicketmaster

Market size

A market measured in millions of rooms.

~5.9M

TAM · U.S. commercial buildings with HVAC

~1.4M

SAM · public, comfort-sensitive venues

~28K

SOM · beachhead across 10 hot & tourist metros

749K

Restaurants

370K

Places of worship

70K

Bars & nightclubs

64K

Hotels

55K

Gyms & studios

35K

Museums

15K

Live-music venues

5.5K

Cinemas

Only ~5% of U.S. commercial buildings have a connected thermostat. The other 95% are exactly who the $29 WhatTemp Sensor is for — so the addressable market expands instead of being capped by who already owns a Nest. At just 10% of the SAM on Venue Pro, that’s ~$15M ARR — before hardware, API, or analytics.

Sources: EIA CBECS 2018 · National Restaurant Assn · IBISWorld · Health & Fitness Assn · AHLA · IMLS · NATO/Comscore · Hartford Institute. Figures rounded.

Business model

Free for everyone who creates coverage. Paid for everyone who wants the insight.

Consumers

Free

Forever. Demand is the wedge and the moat.

Venue Pro

$9/mo

Trends, “comfort-verified” badge, multi-site, HVAC-efficiency insights.

Hardware

$29

The WhatTemp Sensor for spaces with no smart thermostat — and a fully-owned, unrestricted data source.

Licensed API

Platform

Maps & search platforms ingest the verified Indoor-Temperature feed.

Comfort analytics

Enterprise

Anonymized comfort + physiology trends for chains, retail, and HVAC.

The defensible IP

Four assets no thermostat maker and no map will build neutrally.

1
The cross-vendor aggregation layer.
One normalized reading out of many incompatible thermostat APIs.
2
The “Indoor Temperature” schema & canonical dataset.
Own the format search engines ingest, and the verified data that fills it.
3
Confidence & verification scoring.
Sensor vs. crowd vs. estimate, scored for trust.
4
The comfort model.
What the human body prefers in a space — from opt-in wearable signals. Patent-pending territory.

Who needs this

Everyone who sells comfort, dresses bodies, or owns the map.

Distribution / acquirers

Google & Apple Maps — local discovery needs the layer. Nest / ecobee — a public-comfort feature, built neutrally for them.

Demand partners

Ticketmaster, AXS — “the venue runs cool, dress warm” on every ticket. WHOOP, Garmin, Apple, Oura — comfort as a new health signal.

Retail / apparel

Gap, Lululemon, Uniqlo — “it’s 64° where you’re headed” → the right layer, recommended and sold in-context.

Turn-key · the next 90 days

Protect it, pilot it, raise on it.

Legal

Delaware C-corp, IP assignment, founder vesting, biometric-data counsel (BIPA/GDPR/CCPA).

Patent

Provisional on the cross-vendor pipeline + comfort-from-physiology model. ~$3–5k, locks priority for 12 months.

Trademark

“WhatTemp” word + logo, Classes 9, 42, 35. Clearance search → intent-to-use filing.

Pilot

One metro, 25 venues, real thermostat OAuth live (already scaffolded). Prove density and the Google surface.

The ask: a pre-seed to fund the pilot, the patent, and the first cross-vendor integrations — the position that gets acquired, not licensed around.

WhatTemp

Dress for the room.

The temperature layer for the physical world — consumer love on top, a defensible data company underneath.

Jonathan Lewis · jonathan@whattemp.app