A variety of language translators and phrase books are available on the App Store, but Human Japanese ($9.99) offers a more thorough study of the language. It patiently walks the learner through the vocabulary, provides language exercises, and has an essential introduction to Japanese language and culture.
Feeds has the most attractive interface of any of the native readers. There are options to change its default theme colors, but I’m quite happy with how it comes. Its inline browser is fast-loading and easy on the eyes. The app is fairly solid, crashing rarely, and offers you standard choices of actions you can take on a feed item (star, share, etc.).
Doppler is the most solid performer of all the native RSS apps I’ve tried. It has almost never crashed or hung up during operation. It includes a fairly attractive browser that presents individual feed items well. It also has a good range of action buttons for use with feed items, located along the bottom of the screen. These allow you to share or e-mail the item, open it in Safari, share it with a note, star it, or mark it as unread.
BoltReader also has a plain UI with muted colors and a grayscale look in various places. Its sync routine is divided into two parts: feeds and images. The syncing process is fairly slow, but you can view folders that are already updated while syncing is in progress.
Byline was the very first native RSS app I tried on the iPhone. It is among the most stable of all iPhone RSS apps—it very rarely crashes or freezes up—and it usually does what it promises it will do. It offers full two-way sync with Google Reader, allowing you to star and share items, e-mail items, and create and share notes. It also has landscape mode, an inline browser to view full posts, and an offline reading capability.
Despite the fact that Web apps are viewed by some as the ugly stepchild of the iPhone, my most-used app is Google Reader. It’s like Marvelous Marvin Hagler—the fantastic, undisputed middleweight boxing champion back in the 1980s—because it’s so much better than its rivals. Part of the reason it’s such a great app is that Google has regularly and lovingly tweaked it, adding niceties that make it easier to use and features that bring it ever closer to the capabilities of its desktop counterpart.