16. Fotopedia Heritage (free)
Rather like The Guardian Eyewitness, Fotopedia Heritage is perfect for anyone who enjoys awe-inspiring photography. The app enables you to browse tens of thousands of photos of beautiful locations worldwide. It also provides information about each location, and can be used for travel planning through favourites and links to TripAdvisor.
17. GarageBand (free)
Apple's GarageBand turns your iPad into a recording studio. Previously a paid app, GarageBand now has a freemium model. For no charge, you get full access to its features, including a range of smart instruments, MIDI editing and song arrangement. The only limitation is that relatively few instruments are included, but more are available via IAP.
18. GoodReader 4 ($6.99, £4.99)
GoodReader 4 is the latest incarnation of the iPad's best PDF reader. You can annotate documents, extract text, and now also rearrange, split and combine documents. The app previews various other files as well, can create and extract ZIP archives, and is capable of connecting to a wide range of online services. Alongside Dropbox, it makes a great surrogate Finder/Preview combination — a must-have for iPad power users.
19. iBooks (free)
Going head-to-head with Kindle, iBooks is a decent ebook reader, backed by the iBookstore. As you'd expect from Apple, the interface is polished and usable, with handy cross-device bookmark syncing, highlighting, and various display options. It's also a capable PDF reader, for your digital magazine collection.
20. IM+ (free)
Although the iPad enables a certain amount of basic multi-tasking, anyone who constantly juggles a number of instant messaging services will soon be tired of leaping between apps. IM+ is a good solution, enabling you to run a number of IM services in a single app, and there's also a built-in web browser for checking out links.
21. iMovie (free with new device or $4.99, £2.99)
You're not going to make the next Hollywood hit on your iPad, but iMovie's more than capable of dealing with home movies. The interface resembles its desktop cousin and is easy to get to grips with. Clips can be browsed, arranged and cut, and you can then add titles, transitions and music. For the added professional touch, there are 'trailer templates' to base your movie on, rather than starting from scratch.
22. iPhoto (free with new device or $4.99, £2.99)
The iPad version of iPhoto is curious for an Apple app in that it's not terribly intuitive. The interface is quite opaque, and you'll initially need quite a bit of help from the '?' button. But after a short while, the app reveals its secrets and becomes an immersive and natural way to adjust and tweak your photos, fully taking advantage of the iPad's multitouch display.
23. iStopMotion ($9.99, £6.99)
There's something fascinating about animation, and iStopMotion is a powerful and usable app for unleashing your inner Aardman, enabling you to create frame-by-frame stories. There's also time-lapse functionality built-in, and the means to use the free iStopMotion Remote Camera with an iPhone on the same network.
24. iTunes U (free)
If you're still convinced the iPad is only a device for staring brain-dead at TV shows and not a practical tool for education, check out iTunes U. The app enables you to access many thousands of free lectures and courses taught by universities and colleges, thereby learning far more than what bizarre schemes current soap characters are hatching.
25. Journeys of Invention ($9.99, £6.99)
Touch Press somewhat cornered the market in amazing iOS books with The Elements, but Journeys of Invention takes things a step further. In partnership with the Science Museum, it leads you through many of science's greatest discoveries, weaving them into a compelling mesh of stories. Many objects can be explored in detail, and some are more fully interactive, such as the Enigma machine, which you can use to share coded messages with friends.
26. Kindle (free)
Amazon's Kindle iPad app for reading myriad books available at the Kindle Store is a little workmanlike, and doesn't match the coherence of iBooks (you buy titles in Safari and 'sync' purchases via Kindle). However, Kindle's fine for reading, and you get options to optimise your experience (including the ability to kill the naff page-turn animation and amend the page background to a pleasant sepia tone).
27. Korg Gadget ($38.99, £27.49)
Korg Gadget bills itself as the "ultimate mobile synth collection on your iPad" and it's hard to argue. You get 15 varied synths in all, ranging from drum machines through to ear-splitting electro monsters, and an intuitive piano roll for laying down notes. A scene/loop arranger enables you to craft entire compositions in the app, which can then be shared via the Soundcloud-powered GadgetCloud or sent to Dropbox. This is a more expensive app than most, but if you're a keen electronic-music-oriented songwriter with an iPad, it's hard to find a product that's better value.
28. Launch Center Pro ($7.99, £5.49)
The idea behind Launch Center Pro is to take certain complex actions and turn them into tappable items — a kind of speed-dial for tasks such as adding items to Clear, opening a URL in 1Password, or opening a specific view in Google Maps. Although the list of supported apps isn't huge, it's full of popular productivity apps; and should you use any of them on a regular basis, Launch Center Pro will be a massive time-saver and is well worth the outlay.
29. Microsoft Word for iPad (free/subscription-based)
It was a very long time in coming, and there were fears Microsoft would make a half-hearted effort to get Word on to the iPad. In the end, we actually got a surprisingly powerful, touch-optimised, high-quality word processor and layout app. The subset of tools you get from the PC version is more than sufficient, and for free you can use the app as a viewer. For editing, you'll need an Office 365 subscription (from $6.99/£5.99 monthly), and this will also give you access to Excel and Powerpoint, along with office apps on other platforms.