What happened to the URL on file for SEO App?

URL unreachable The URL on file (https://seo.app/) did not respond across three consecutive checks; the streak completed on 2026-10-13. The most recent check that did receive a response was on 2026-09-19.

This reports what that URL did, not a claim that SEO App itself is gone: the address on file does not confidently match SEO App's own domain, so if it turns out to be a marketplace or listing page rather than SEO App's own site, this observation is still accurate about the URL, just not about the product. See the methodology for how the match is made.

The vendor's own description, unedited:
SEO.app is an AI-driven SEO plugin that is available on the ChatGPT store. It provides a personal SEO assistant within ChatGPT, helping users to anticipate SEO trends and achieve unprecedented business growth. The plugin applies the power of patented AI technology to generate highly optimized conten...

Live alternatives

No active same-category alternatives in the registry yet. The tools index carries everything else that is live.

How this was decided

Not an editorial call. The URL on file failed three consecutive checks, with a confirmation re-probe before the streak counted (a bot-wall response never counts as one), and the 3-miss rule marks the listing discontinued automatically. If the URL responds again, the registry restores it on its own: warn first, then active. Both directions are recorded as events.

Spot an error? Tell us. Corrections to the record append, they never rewrite.