If you want to give your iPad a great approximation of Android's Voice Search, Dragon has a program for that, too: Dragon Search lets you use your voice to search Google, the iTunes Store, Twitter, Wikipedia, and YouTube, all on separate tabs, and all at once.
When you're having trouble buckling down and focusing on a task, setting a timer can be helpful. Doing so gives you a clear block of time to spend concentrating on the chore, and offers a bright light at the end of the tunnel. My favorite timer technique, known as Pomodoro, involves setting a timer for 25 minutes and then working feverishly on just one task until the clock runs out. The specific time setting is less significant than the act of setting the timer in the first place, however, so you can use any interval you like.
My favorite iPad timer is Minima Timer+, a freebie that lets you quickly set any interval and runs multiple timers simultaneously. On Android, I love the free Ultimate Stopwatch & Timer, which includes a nifty stopwatch interface that's just plain fun.
If you're interested in the Pomodoro Technique specifically, some attractive tablet options are available. On Android, I recommend Pomodroido, which makes good use of the tablet screen to include task lists and track multiple sessions. On the iPad, the $6 Pomodoro App for iPad offers the same functionality as Pomodroido, but with a more elegant interface.