All apps & connectors
Sigil
ChatGPTby Sigil
Sigil critiques a company’s brand from its public website and an optional public document. The brand review covers positioning, visual identity, voice, a brand score, and the changes to make first. The plugin returns the critique and a link to the full brand review. It does not design logos, generate brand briefs, or access private company systems.
Details
Lifecycle
- First seenOct 21, 2026created Oct 3, 2026
- PublishedLive in ChatGPTlast changed Oct 21, 2026
- Visible in app store•
- Featured•

