Make an app that compares the brightness of two stars with one sentence

First prompt

Make an app for stargazing, I put the magnitude of two stars, and it shows how many times brighter the first star is

App name

Star Ratio

Suggested features picked before building

Result Steps, History

In the original recording, it took about 1 min 12 sec to build.

The app it made

• After entering magnitude 1 for the first star and magnitude 4 for the second and tapping “Compare brightness,” it showed “15.84893× · The first star is 15.84893 times brighter.”
• The result is saved to the history automatically as “First 1 · Second 4 · 15.84893× brightness ratio.”

Change request

Add a line with the faintest magnitude I can see with 50 mm binoculars

After the change

• A new line appeared: “50 mm binoculars: estimated limiting magnitude about 10.5 under ideal dark skies.”
• Comparing again brought the history to 2 entries.

In the original recording, the change took about 28 sec.

When reopened

Save, close, and open it again, and the 2 history entries with 15.84893× are still there.

Try writing it like this for a similar app

• When I enter the magnitudes of two stars, calculate how many times brighter one is.
• Save each calculation to the history with the date.
• When I enter a telescope’s aperture in mm, show a rough limiting magnitude I can see.

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