Legal

Subprocessors

Last updated 17 August 2026.

The short version. Eleven companies, and you can see what each one is for below. Four are unavoidable because they are the app itself — the host, the database, the AI, and the check that your email address is real. The rest only get involved if you switch on the feature that needs them. None of them is an advertiser or a data broker, and none of them is paid in data.

These are every company that can touch data you keep in Chirpy. Anything marked optional is only involved if you switch that feature on. Anything marked sees your IP is contacted by your own browser rather than by our servers, so that company sees the address you are connecting from — all of them are the weather panel, and none of them is told who you are.

Provider	What they do	Where
Vercel	Hosts the app and serves every page	United States
Supabase (on AWS)	Database, authentication and file storage	United States (us-west-1)
Anthropic	Powers every AI feature — receives only what the feature you used needs, and is contractually barred from training on it	United States
Googleoptional	Sign-in; plus Gmail receipt reading and Google Drive file storage if you connect them	United States
apilayer (mailboxlayer)	Checks at signup that the email address you gave is real and not a disposable one — receives the address itself	European Union / United States
apilayer (marketstack)optional	Daily closing share prices. Receives ticker symbols only, batched across all of Chirpy, so they can't be traced to a household	European Union / United States
Open-Meteooptionalsees your IP	The forecast in the weather panel, and turning a town name into map coordinates	Germany
BigDataCloudoptionalsees your IP	Turns coordinates into a town name to label the weather panel	Australia / United States
Aviation Weather Center (NOAA)optional	A real thermometer reading from the nearest airport. We round your location into a wide box before asking	United States
Frankfurter (European Central Bank rates)	Converts between currencies so a multi-currency household gets one total. Receives currency codes only — never an amount, never anything about you	European Union
Apple, Google and Mozilla push servicesoptional	Deliver push notifications to your device	Varies by device

We will add a new provider here before it starts handling your data, and note it in the app's What's New.

One thing that isn't on the list

When you save a shopping link to a wishlist, Chirpy visits that shop page to read the title, picture and price. The shop is not our provider and gets nothing about you — the visit comes from our servers, not your browser, and carries only the address you pasted. If you ask for a price check that needs the AI, Anthropic fetches the page instead, from their systems.

What we don't use

No advertising networks, no analytics trackers, no data brokers. We do not sell or share your personal information, and our agreement with our AI provider forbids training on your content. That is why Chirpy shows no cookie banner — see the cookies section of the Privacy Policy.