Thresho v1 · US
Privacy

Privacy Policy

Last updated 21 July 2026

Thresho is a product of House of May LLC. It runs on your iPhone and works without an account. It does not know who you are, and it never collects your home or precise location. To keep the alert timing accurate, it does collect a little anonymous usage, which you can turn off in Settings at any time. The short version: no account required, no location, anonymous usage only, never sold. The detail is below.

Your location

Thresho uses your device location to do one thing: look up the weather forecast and air quality for where you are. Your approximate location is sent to the data providers below so they can return your local conditions. We do not store your location on a server, and it is never attached to the anonymous usage described below. We do not use it to identify, profile, or track you across apps or the web.

What stays on your device

  • The window rules and comfort thresholds you set.
  • Your notification preferences.
  • The forecast data Thresho fetches to schedule your alerts.

Your alerts are scheduled locally on your iPhone. If you delete the app, this information is removed with it.

Data providers we rely on

To give you accurate, local information, Thresho sends your approximate location to:

  • Apple WeatherKit for the hourly forecast. Apple's handling of this request is governed by Apple's own privacy policy.
  • AirNow, the U.S. air quality service operated by the EPA and partner agencies, for local air quality.
  • Open-Meteo, as a fallback forecast source. If Apple WeatherKit is unavailable, Thresho requests the hourly forecast directly from Open-Meteo, sending your approximate coordinates to return local conditions. The request goes straight from your device; we never receive or store it. Open-Meteo requires no account and uses no cookies or tracking. Per its published policy it may retain standard webserver logs, including IP address, for up to 90 days for technical purposes. Weather data is provided under the CC BY 4.0 license.

We share only what is needed to retrieve your local conditions, and only when the app needs fresh data.

Anonymous usage to improve timing

To keep alerts accurate, Thresho collects a small amount of anonymous usage: which windows of time people act on, whether alerts fired and were acted on, and which forecast source served the data, along with crash and performance diagnostics from Apple's built-in tools. This helps us make the timing better for everyone.

This data is anonymous. It carries no location and no personal information, it is not linked to you, and it is never sold. It is on by default, and you can turn it off in Settings at any time. The app keeps working exactly the same when you do. We record when you change this setting, whether you turn it off or back on. If you turn it off, that record is the last thing we collect, and that includes crash and performance diagnostics. Knowing how many people opt out is the only way we can be honest about what our numbers cover.

One honest technical note

Thresho stores this data in Apple's iCloud (CloudKit). As part of how CloudKit works, Apple attaches an account-scoped identifier to every record, and we cannot turn that off. We do not use it, and our own tooling discards it before the data reaches our analysis. We would rather tell you it is there than let you assume it is not.

Events are grouped by a random per-install identifier so we can tell one install from another and count how many people a change helped. That identifier is not your name, your account, or your device ID, it is not tied to your identity, and it resets if you reinstall the app. Each event carries a timestamp, the app build number, and a schema version alongside that identifier, plus the event detail described above. No other identifier is attached. The usage data is stored in Apple's iCloud (CloudKit) in a database House of May LLC owns. We use no third-party analytics service, and diagnostics come from Apple's built-in MetricKit tools.

We never collect your home location, the names of your rules, or anything that identifies you.

What we do not do

  • No advertising, and no ad networks.
  • No selling or renting of your data, ever.
  • No third-party analytics tools in the app, and no cross-app tracking or profiling.

This website

The sections above describe the Thresho app. This website is separate. It does not set cookies, does not run advertising, and does not track you across the web.

To understand how the site is used, we rely on Cloudflare Web Analytics, which counts page views in aggregate, without cookies and without collecting personal information. Nothing here identifies individual visitors.

The site is served by Cloudflare, which processes requests, including IP addresses, as any host must in order to deliver a page and keep it secure. We do not receive or keep that information.

Children

Thresho is not directed at children and does not knowingly collect information from anyone under 13.

Changes

If we change how Thresho handles data, we will update this page and revise the date above. Material changes will be reflected here before they take effect.

Contact

Questions about privacy, or anything else, reach us at [email protected].