Restler!

Restler is an elegant and simple REST client for iPad, iPhone and iPod touch* Presents information in overview, detailed request and response views* Easily add request headers* Pretty printing for JSON and XML documents* Image and HTML preview* Search response text and highlight matches* Easily make new requests using URLs in response text* Share request and response to other apps in your workflow including Safari and Chrome* Save requests (including headers and body) to replay later* Pasteboard and URL scheme support