Takashi Fujisaki

It is a WordPress plugin that generates iTunes affiliate links such as iPhone, iPad, Mac apps and music, movies etc.
It is very easy because you can search the application on the article creation screen and paste the Shortcode or HTML tag of the affiliate link (below Applink) .
Applink displays icons, titles, categories, prices, compatible devices, link buttons to stores, and so on.
Also, you can specify the number of screenshots and display it.
Please see the plugin page for details.
<a href="http://e-joint.jp/works/wp-applink/" rel="nofollow ugc">Plugin page</a>
iPhone, iPad, Macのアプリや音楽、映画などiTunes PHGのアフィリエイトリンクを生成するWordPressプラグインです｡
記事作成画面でアプリを検索し､選択したアプリのアフィリエイトリンク（以下Applink）のショートコードまたはHTMLタグをそのまま貼り付けることができますので､非常に簡単です｡
Applinkにはアイコン､タイトル､カテゴリー､価格､対応デバイス､ストアへのリンクボタンなどが表示されます｡
また､スクリーンショットの数も指定して表示させることができます｡
詳しくはプラグインページをご覧ください｡
<a href="http://e-joint.jp/works/wp-applink/" rel="nofollow ugc">プラグインページ</a>
<h3>Arbitrary section 1</h3>

WP Applink

It is a WordPress plugin that generates iTunes PHG affiliate links such as iPhone, iPad, Mac apps and music, movies etc.

mjar81

This is a simple WordPress plugin that you can modify to fit your own needs. Use your iOS’s application id and it will spit out some basic HTML that you can then apply your own styling to.
Why?
I wanted to make sure that I had accurate descriptions and current pricing information for all my apps wherever I display this data on my personal websites. This was the natural thing to do.
Check out the example of what it produces here: http://www.mohawkapps.com/checkout-helper/
<h3>Advanced Usage</h3>
You can also use the following shortcodes to pull only parts of the application’s data. Please note that you must also pass the id to these shortcodes as well of the plugin won’t know what application you want the data for.
<ul>
<li>name</li>
<li>icon</li>
<li>icon_url</li>
<li>version</li>
<li>price</li>
<li>release_notes</li>
<li>description</li>
<li>rating</li>
<li>iphoness</li>
<li>ipadss</li>
<li>itunes_link</li>
</ul>
This plugin will cache the data from your application in the WordPress database for 24 hours. Application icons and screenshots are cached on your server by default but if you’d like to pull those images directly from Apple’s CDN servers (usually faster), change the value of IOS_APP_PAGE_CACHE_IMAGES to false

App Display Page

Adds a shortcode to display information about iOS apps from Apple's App Store.

WP Applink vs App Display Page