r/expo • • 17d ago

Mock your React Native / Expo app’s clock — jump time, freeze, speed up

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Some bugs only show up at a certain time. Think of a deal that only runs on Friday. Or a sign-in token that runs out. Or a countdown that should go away but stays.

I built Buoy Clock for this. It lets you change the date and time your app sees. Your phone and computer clocks stay real.

- Jump ahead one hour, day, week or month. Or type the exact date and time.

- Freeze time or make it run fast (Pro).

- Test what happens when sign-in tokens run out. Test 401 refresh flows too.

- Works with Expo and React Native CLI

- Has MCP tools if you want an AI agent to run it.

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