Dust off that Telescope and get out there - with StarCaster's astronomy forecasts no guesswork is required!

"This app's creators have invested countless hours into making it what it is today, a reliable companion for my star gazing outings. And it gives you the weather as well!!!" - Pilar (5/5)

"I’ve now got about 6 months of use under my belt. I love it, it’s my go to place to see if I’ll be observing tonight..even if your just a casual observer or someone deep into Astrophotography, or someone in the middle like me. You owe it to yourself to try it." - Dave (5/5)

"This has been my go to app whenever I plan on an observing session. A nice bonus has been the chat rooms where we can chat with other stargazers. As far as I know, this is the only iOS app that has this type of chat room for astronomers. Well done!!" - KTYL (5/5)

Help make frustrating cloudy nights a thing of the past!

StarCaster is an intelligent forecasting app that helps you plan the perfect times for stargazing and night photography.

Accuracy: Tried and tested with 100's of users worldwide before our first launch - we challenge you to find a more accurate stargazing forecast app. Our custom prediction algorithms rely on multiple sources and are globally available.

Traveling: StarCaster has got you covered with our global network of weather observatories and the ability to add locations you'll be visiting for a personalized forecast.

Alerts: StarCaster can alert you to when stargazing times will be optimal taking the guess work out of impromptu sessions and letting you focus on stargazing instead!

Chat: A first for astronomy apps - our in app chat with our amazing community allows you to discuss Stargazing and Astronomy with a beginners and pro's alike.

Premium: A StarCaster premium subscription adds another layer of awesome by extending our usual 3 day forecast window to 7 days of predictions and adds 168 high quality personalized forecast per week!

Note: A StarCaster Premium subscription is billed against your iTunes Account. The subscription automatically renews on the same day each month until you cancel it under your Apple ID in iTunes. Cancellations must occur at least 24 hours prior to renewal to avoid being billed for an additional month. Any unused portion of a free trial period (if applicable) will be forfeited when a subscription purchase is made.

Terms of Use & Privacy Policy:

What’s New

Version 1.52

At StarCaster HQ we're incredibly thankful for our loyal users and their ongoing input to help us make the app more useful.

Help your stargazing outings be the very best they can with StarCaster!

This version is jam packed with more features and bug fixes than a Tupperware container of your favourite eyepieces:

- Enhancement: Introducing "Dark Mode" - The ability to hide astronomy backgrounds throughout the app for a clean dark look.
- Enhancement: Astronomy Forecast Speed Optimizations - Get those forecasts ready blazingly fast with our new optimized processing!
- Bugfixes across the app.

We can't wait for you to try it!

The StarCaster Development Team

Ratings and Reviews

4.2 out of 5
20 Ratings

20 Ratings

Tucson Rick ,

This app has improved

App early on had false reports of my weather conditions. Recently it has proven far more accurate at predicting my weekend stargazing conditions.

Cruikshank2 ,

Love this App

I initially got in on the beta program. But I’ve now got about 6 months of use under my belt. I love it, it’s my go to place to see if I’ll be observing tonight. Unlike other star viewing weather predictors, this one is very easy to interpret. I just look at how they rate visibility for the hours I wish to view. Rated anywhere from excellent to poor and a percentage.

It’s not 100% accurate but your talking about an app that is predicting viewing conditions all over the world. My local weatherman is wrong much more than this app. It takes into account cloud cover, darkness, temp, humidity, and winds.

Even if your just a casual observer or someone deep into Astrophotography, or someone in the middle like me. You owe it to yourself to try it. Also when you do, help make it better for everyone by reporting your actual conditions if they are different from the predictions. Without feedback the programmers can’t tweak it to constantly improve it. Thank you for this valuable tool in my Amateur Astronomy tool box.

AstroGirlBunny ,

Astronomer’s Dream App

Try it, explore it fully, and you will become a loyal user. I promise.
It’s more than weather observing forecasting app. They have multiple forums available on a wide range of topics. Great response from the developer and person who runs the forums. Active and friendly communities.
For the forecasting? I’m blown away by the wealth of information it provides. Yet, they still manage to make it not overwhelming nor unreadable like many others. Every time I explore this app, I find more and more goodies that I have not found anywhere else.
Hands down, this is one of the best astronomy apps I have encountered which is geared towards an actual astronomer.

App Privacy

The developer, Andrew Lombard, indicated that the app’s privacy practices may include handling of data as described below. For more information, see the developer’s privacy policy.

Data Linked to You

The following data may be collected and linked to your identity:

  • Location
  • Contact Info
  • Identifiers
  • Usage Data
  • Diagnostics

Data Not Linked to You

The following data may be collected but it is not linked to your identity:

  • Diagnostics

Privacy practices may vary, for example, based on the features you use or your age. Learn More


  • Family Sharing

    With Family Sharing set up, up to six family members can use this app.

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