Make a weather app that tells you when to plug in your car

First prompt

Make me an app that shows the Calgary forecast and tells me which nights are cold enough to plug in my car.

App name

Plug-In Night

Suggested features picked before building

Calendar, Cutoff

The app it made

• The first screen showed “Plug-In Night · Calgary · Plug-in temperature -15 °C.”
• After changing the cutoff to 0 °C and tapping “Get forecast,” it showed a forecast by day with “PLUG IN NIGHT” marks, like “4 nights to plug in · Today 3°/0° Cloudy · Sun 1°/-1° Snow · Mon 5°/-4° Clear.” The forecast comes from the internet.

Change request

Add a reminder tonight at 7 to plug in the car if it's a cold night.

After the change

• In the changed app, the cutoff had gone back to -15 °C, so it was set to 0 °C again. Getting the forecast showed “4 nights to plug in” and a new “Remind me at 7 PM” button.
• After tapping the button and allowing it in the prompt “Plug in the car · Oct 10, 2026 7:00 p.m.,” the message “Reminder set for 7 PM tonight.” appeared.

In the original recording, the change took about 48 sec.

When reopened

When you open it again, the cutoff is back to -15 °C and the forecast is empty, so it starts from the first screen.

Try writing it like this for a similar app

• Show this week’s forecast for my town, and mark the days when the overnight low drops below freezing.
• Let me set my own cutoff temperature, and on days colder than that, set an 8 PM reminder to keep the pipes from freezing.
• On days when the morning temperature is below 40°F, show “Wear a heavy coat” in large text.

These are sample prompts, not real cases. What you get depends on what you ask for.

How to make it

1. Type the app you want in one sentence in the box on the home screen.
2. Answer “Give your app a name.” with the name you want.
3. From the features BYVE AI suggests, pick only the ones you want.
4. Tap “Build for 1 token” to build the app, then tap “Open app” to use it right away.
5. Write what you want to change in the chat, and the same app gets updated. A change also uses 1 token.

Good to know

• Each new app or change uses 1 token. You get 2 tokens when you first install, and you can get up to 3 more every 24 hours by watching ads. There are no in-app purchases.
• The apps you make and what you enter are saved on your phone, and apps you’ve already made open without internet. Features that fetch outside information, like weather and maps, need internet.
• It works on Android 8.0 or later and iOS 17.0 or later, and there’s no sign-up.

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App examples

This example in other languages: 한국어