Google’s 13 October 2026 update puts Antigravity inside Gemini on macOS. The announced scope is English, age 18+, personal and eligible work accounts in supported Antigravity regions. Open Antigravity in the Mac app and review the proposed plan before it builds. Start with a site small enough to inspect yourself.
“Build me an app” leaves many choices unanswered. A small website is easier to assess when you describe one visitor and one job. Begin with a local draft you can inspect before asking for publication.
Write a short brief
For a fictional neighbourhood reading group, specify a page showing the next meeting, three books and directions. Supply the wording yourself. Say whether the information is public, what should work on a phone and which details are still unknown. Leave unknown facts unset rather than asking the assistant to invent them.
Ask for editable files and instructions for opening the preview. Products differ in how they build and host sites, so follow the workflow documented for the tool you actually use.
Check the visitor’s path
Open the page at desktop and phone widths. Can a visitor find the meeting date, follow a book link and return to the home page? Check actual destinations and readable text, not just whether a build command finished. Ask for a focused correction when one step fails.
Make publication a separate decision
Keep the source and a recoverable previous version. Review content, forms, connected services and hosting costs before making the site public. A polished screenshot does not establish that buttons work or that private notes stayed private. Add more features only after the small first version behaves as intended.