After delaying several years Google at last released a native GMail application of iPhone, iPad & iPod touch. In a blog post, Google says
We’ve combined your favorite features from the Gmail mobile web app and iOS into one app so you can be more productive on the go.It’s designed to be fast, efficient and take full advantage of the touchscreen and notification capabilities of your device.
The iOS App includes almost all the features that are found on Android version of GMail app - users can star, label, archive, access the Priority Inbox and push notifications for new mail alerts. It also includes standard touchscreen commands like pull down to refresh and swipe to scroll emails.
Go and grab the GMail App from iTunes