Announcing the Galaxy Zoo iPhone App

Help us explore the universe from the park, the train, or the bath*.
Main Screen - Features

Following a number of requests we are today releasing the first mobile Zooniverse application: the Galaxy Zoo iPhone app.

The app, which will run on iPhones, iPod Touches, and iPads, lets you classify galaxies from our Hubble Galaxy Zoo project from anywhere. It has a slick and simple iPhone interface and will challenge you with the same huge galaxy database as the galaxy zoo website.

If you have a long journey ahead and want to pass the time classifying, you can download a stockpile of galaxies via WiFi to keep you going the whole way. And if you run out you can download some more over the 3G or Edge networks.

You can find the app on iTunes, by searching for “Galaxy Zoo”, or with this direct link. You can find background information on the help page.

The app was developed by Oxford cosmologist Joe Zuntz, along with Arfon Smith and Stuart Lynn. They have a bet with Chris that you’ll be able to classify 1 million galaxies with it, and hope you’ll help them win it.

*Please don’t drop your phone in the tub.

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About The Zooniverse

Online citizen science projects. The Zooniverse is doing real science online,.

38 responses to “Announcing the Galaxy Zoo iPhone App”

  1. Graham Anderson says :

    A link to the app in the iTMS might be a good idea.

    Try this for size!

  2. Graham Anderson says :

    Stupid me – but your colour scheme made the link very hard to spot.

  3. Joseph K. H. Cheng says :

    What an exciting application for travelling Zooites ! Thanks for this additional feature in the ZOO.


  4. Mark OConnell says :

    Do one for Android 2.1 OS please.

  5. du.plex says :

    Why only for iPhones ?

  6. Uwe Hauck says :

    Yes please, do one for Android 2.1 too. Would be great!

  7. Chris says :

    Hi all

    Requests for Android apps noted. I’m not sure we’ll get there quickly, but we’d love to one day. Most of the development for the iPhone app was done by Joe Zuntz for fun, but if it demonstrates that there is demand for the Zoo on mobile devices I’m sure it will become a priority.



  8. CMitchell says :

    Maybe I missed something but my Touch doesn’t,
    seem to be uploading my classifications. Or is it just that seamless/invisible??
    Thanks for the app. Too cool’

  9. arfon says :

    Hi CMitchell. The app will only start sending classifications once you have classified 10 or more galaxies. If you’ve done this can you please email me on and I’ll see what I can do to help?


  10. Nathaniel Gray says :

    Hi – If you’d like help with the Galaxy Zoo port to Android, please email me. I’d love to aid this project.

  11. Lee Andrews says :

    I think this is a great looking app, very intuitive to use and navigate around – it will definitely keep me busy on my long train journeys home each day.

  12. Lewis Docherty says :

    Absolutely for mobile apps! the commute is an ideal time to do some spotting. trouble is…i have a blackberry so yet another platform to develop!!!! 🙂

  13. Chris says :

    Build for android 2.x please!

  14. Kaustav says :

    I’ve got an Android phone. Would love to get this app ported to Android.

  15. ashkan irandust says :

    like others :
    please build for android !
    please !

  16. Bindu S says :

    great app!! thanks!!

  17. Uilliam MacGiolla Mhártain says :

    I’d really like this on my Android. In the absence of an app, does anyone know if the main site is usable in the native browser on Android phones?

    Android is set to explode in the next 2 years, Galaxy Zoo should be on it

  18. Free Beachler says :

    I’ve started an Android application but need help with web-service/API calls.

  19. Bob says :

    Some Android love please 🙂

  20. James says :

    I’d also like to add my voice to the requests for an Android application. As Uilliam MacGiolla Mhártain noted, Android is growing rapidly. I’ve read predictions that it will soon overtake the iOS (if it hasn’t already), and it with Symbian will dominate the markety by 2014. I would love to see Zooniverse projects be available on Android — with how fast it’s growing, I think there needs to be an Android app in addition to the iPhone one. I’d probably be able to do more classifications if I could work on my phone, any time, anywhere. Please consider making an Android app for Zooniverse, the sooner, the better. 😉 Thanks!

  21. slawek says :

    Android version please.

  22. rickard says :

    …and don’t forget wp7 too…

  23. Pete says :

    An iPhone app! Excellent idea 🙂

  24. silkenpaw says :

    Whenever I stockpile galaxies the total number increases by 20. I’m currently up to 340 but can see it going up higher and higher, at which point it will be a problem to download them all in a reasonable time. Is this a bug or a feature?

  25. Rob says :

    great app really love being able to get a zoo fix on the move or when I get a few spare moments out and about 🙂

    Please expand though to cover other zoo projects – would love to see a milky way or moon addition to the app

  26. Heather says :

    Galaxy Zoo app. on iPhone has stopped working suddenly. Can’t get it back or the update.

  27. chrislintott says :

    Hi Heather

    The updated site doesn’t work with the existing iPhone or Android app – we’re in the process of submitting updates to the relevant app stores but this might take a while to be approved. Once all of that’s done and you update the app it’ll start working again. Sorry for the lack of galaxies in the meantime.



    PS We did try to email those using the app – sorry you were missed out.

  28. Rob says :

    Can you have the app posted into the Australian App Store. I can’t seem to download it

    • Brooke Simmons says :

      Hi Rob,

      Actually, with the new release of Galaxy Zoo a standalone app is no longer needed — you can just go to from your mobile browser and it should work beautifully, especially in full-screen mode!


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