lustar

lustar

Star gazing forecast

9 ratings
5 reviews
Free

Details

  • Released
  • Updated
  • June 30, 2018
  • May 19, 2026

Features

lustar screenshot #1 for iPhone
lustar screenshot #2 for iPhone
lustar screenshot #3 for iPhone
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About

This app provides hourly stargazing forecasts by combining local weather predictions with light pollution data. It features a searchable global map to help users find optimal viewing locations.

Hourly stargazing forecasts
Light pollution data integration
Searchable world map
Local weather forecasts
Optimal viewing location finder
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What's New in lustar

3

May 19, 2026

I finally had some time to migrate the DarkSky (weather) api which was bought by apple to Apple WeatherKit system. Migrated the app to support new iPhones.

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User reviews

Good idea, poorly made

When I saw this app I was very excited. I am an amateur stargazer and do this as my hobby. It’s hard to know when the conditions are good. I had a trip planed to a local dark sky zone. I checked this app and it said the conditions were poor. As this to me sounded rather strange for the place I was going to. I then checked an app I regularly use for stargazing and it said the conditions were excellent and I went ahead with the trip. When I arrived the sky was so clear! I could see many planets and constellations. I think this app could be something good if it had more up to date and more accurate reports. So I do hope that the developers take this advice into consideration and change the app for the better.
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Helps you find aliens.

This app is great for anyone looking for aliens in the sky. Aliens are invading and this app can help you find them. It’ll show you the very best places to look for aliens. Aliens hate light so the app shows you where the light pollution is. Aliens also hate clouds so it has a handy feature that shows you if there will be clouds. Lustar is the ultimate app for avoiding abduction and yes it can help you find the perfect stargazing spot too.
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A big help

When I moved to a bigger city I was upset about never seeing the stars anymore (I grew up in a rural area). This makes planning stargazing a lot easier. I’ve been telling everyone about it.

A stargazer’s best friend

So glad to have an app that puts all the necessary pieces into one place. Makes stargazing so much more enjoyable, especially during the rainy season.

Great app!

Tons of potential here. I use this app for planning my astrophotography sessions when camping and traveling.

FAQ

What is lustar?

lustar is a free weather app that provides hourly stargazing forecasts by integrating local weather predictions with light pollution data. It helps users find the best locations for viewing the night sky.

Is lustar free to use?

Yes, lustar is completely free to download and use. It does not have any in-app purchases or advertisements, making it a purely free experience for users.

What devices does lustar support?

lustar is available for iPhone and iPod devices. It is designed to provide a seamless experience on Apple's mobile platforms.

How accurate are lustar's forecasts?

lustar combines local weather forecasts with light pollution data to provide hourly stargazing predictions. While specific accuracy metrics are not detailed, the app aims to offer the most optimal viewing conditions.

Does lustar have ads?

No, lustar does not contain any advertisements. The app is ad-free, ensuring an uninterrupted stargazing experience for its users.

What is the age rating for lustar?

lustar has an age rating of 4+, making it suitable for users of all ages. This indicates it contains no mature content.

When was lustar last updated?

The latest version of lustar, 1.2.45, was released on June 30, 2018. The app was initially released on the same date.

What do users like about lustar?

Users appreciate lustar's ability to combine weather and light pollution data for stargazing. Its searchable map feature is also a key highlight for finding optimal viewing spots.