I've downloaded and bought every astronomy app I could find. And I'll get any more suggested!
However, it's hard to argue against the consensus that Sky Safari Pro is the best all round app. It's easily the most useful for actually getting things done with a telescope.
That said, other apps have their own specialities...
Here's what I have tried:
Sky Safari Pro
Yes... this is the best single app out there. It's got pretty much everything you want and a decent interface.
This isn't a planetarium app, but it's my favourite space app. All the Kepler information laid out in a 3d map of the galaxy that you can fly around... All the systems rendered in 3d using the new data... And if you buy the add ons, you can fly around the entire known universe. It's awesome.
Useful for checking out what's going to be in the sky. More of a technical tool, and it doesn't seem to have been updated for the newest iPhone screens. But it's mainly text, so that doesn't matter so much.
Star Walk 2
Prettier and less technical than Sky Safari, and useful for just exploring constellations.
Even prettier and even less technical than Star Walk 2, but it's good with Iridium flares and fun to look up random stars for information. It brings up a nice render of what they might look like.
Red Shift Pro
This used to be better than Sky Safari, but it seems to have stagnated. Technically good, huge catalog and a fun fly through tour of objects. If you want to fly to DSO's and rotate round them in 3d to see what they'd look like in space, this does that better than SkySafari
It's slightly annoying to move around in, but it does have the prettiest pictures of DSOs placed in the sky. So it's good for a bit of an explore.
The best thing is the simplicity. You can figure out star magnitude and navigate around easily. I use this if I want to quickly double check want a star is that I'm looking at using my naked eye.
Night Sky 4
It can look quite good, but it has an annoying non 1:1 touch interface (move a little, the screen moves a lot). It does have easy to access, nicely laid out information about a lot of objects.
This is an Augmented Reality app, so it overlays the constellations over what your camera sees. Hold it up to the sky and it should overlay correctly. It never really does so it can be fun, I've found it useful once or twice, but it's a mainly novelty. The graphic design layout isn't that good.
Not that great - I don't like the planetarium features in it. But there is a what's in the sky tonight feature that's pretty fun.
Solar Walk 2
If you like flying through the galaxy or the solar system, this is the best app for that (apart from Exoplanet).
Another good bit of planetarium sofware. This one is very quick to read, which can be helpful if you want a quick check. It has lots of options and depth to explore too.
No longer updated -- it's been folded into the main NASA app.
A must have, it's NASA isn't it... interesting news to dip into. You can watch NASA TV through this.
It shows you all the satellites orbiting the earth. Interesting, but it's not been updated to work with the latest iOS versions, so it looks old and can slow up.
If you're interested in Sattelites, this is the app. It looks good and has lots of information.
Quite nice planetarium software, which looks a little different from the rest, instead of tapping on things, you can move the eye piece and it shows a close up on the object you pass over as a photo. The main issue I have with it is that the frame rate can drop when trying to render a small number of objects on the screen -- I'm using an iPhone 7 Plus.
Quite a good stargazing weather app. It looks nice and gives you some useful widgets. Though I quite like the stargazing options on the main WeatherUnderground app. It's not quite as technical as...
The best app to show you if the weather is going to be any good for stargazing. Unfortunately, the interface is a little confusing and irritating.
If you have NASA you should have ESA... well not unless they update this to work with new iOS versions...
Wonders of the Universe
To go along with the BBC TV series, this is pretty fun. Like an glossy animated book.
Quick way of seeing what's in the sky and what's brightest. Text/Menu driven which is good for speed.
Useful astronomy forecasting app, with additional useful info such as projected seeing conditions.
See where the ISS is and who's on board. Fun, and if you want to spot the ISS overhead, useful to plan with...
Doesn't work any more
It's a nice idea to give you star tours like a GoTo handset, but I found it too clunky.
It is what it says it is. It looks nice and is fun to play with for a bit but it's not been updated to work properly with the latest iOS. It doesn't seem too buggy though. The only thing is I'm not sure what the point is.
Another AR app. It's okay. But old and not updated.
An app for helping along your EQ mount. I've not used it to actually do this. But it seems to be the thing you use if you have an EQ mount and want an app to assist aligning it.
I've tried more, but those are the ones I reinstalled when I got a new phone at the end of last year.
While I use SkySafari if I'm doing something serious. I do have Red Shift, Stellararium, Star Walk, Luminos and Pocket Universe set up at different magnitudes, so if I want to gauge what is in the sky quickly instead of resetting the magnitude limits, I jump between apps. I also like to compare the information, because picking out the right star can sometimes be tricky.
That said, I could probably get rid of all of them except: Exoplanet, SkySafari, ScopeNights. I like playing with the others, but those three I'd really miss.
Edited by CityObserver, 07 March 2017 - 08:06 PM.