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FastParty works wherever you are. Use the web app from any browser, the mobile app on your phone, or manage your events directly from Claude — no app required.

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Web app

Go to app.fastparty.ai in any modern browser. No installation needed. The full FastParty feature set is available on web, including Antsy, the AI concierge.

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iOS

Download FastParty from the App Store:

Download on the App Store

Available on iPhone and iPad running iOS 16 or later.

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Android

Download FastParty from Google Play:

Get it on Google Play

Available on Android 10 or later.

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Claude AI

FastParty is available as an official connector in the Claude Connector Store. Once connected, you can create events, invite guests, manage agendas, and more — directly from Claude, without opening the FastParty app.

Set up the Claude integration

Manage your events from inside Claude AI.

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Everything stays in sync

All platforms share the same account. An event you create on your phone is instantly available on the web app and in Claude. RSVP updates, potluck sign-ups, and task changes appear everywhere in real time.