Cookies
ispollenhigh does not set cookies. We use Vercel Web Analytics and Vercel Speed Insights, both in cookieless mode, and we do not run any other tracking. That is the whole story but the rest of this page exists so you can verify it.
What we store on your device
The only browser storage we use is local storage and a service worker cache. Both stay on your device and are never sent to our servers.
| Name | Where | Why |
|---|---|---|
| iph_visited_at | localStorage | Records the timestamp of your last visit so the install prompt does not appear on a first visit. |
| iph_install_dismissed_at | localStorage | Set when you tap "Not now" so we do not nag you. Cleared after 30 days so you get a fresh chance. |
| iph_geo_dismissed | localStorage | Set if you decline the browser's location prompt, so we don't ask again on the next visit. |
| shell-* and runtime-* caches | Service worker | Hold the page shell, your last reading and an offline fallback. They make the site usable when you are offline. |
Clearing the data
You can clear local storage and the service worker cache from your browser's site settings. Doing so resets the install prompt and removes any offline copies.
Third parties
We do not embed third-party widgets, ads or trackers. The only external network calls the site makes are to the pollen data provider (server side, on the edge function) and to Vercel Web Analytics and Speed Insights. Both Vercel products are cookieless and proxy through paths on this domain rather than calling third-party hosts directly.