AnkiMobile is a native client for Apple devices that allows you to use your desktop decks on the go. It supports offline media and editing features, and is being actively developed.
AnkiMobile is available on the App Store.
Surprised by the price? Please see this page.
Please have a look at the online manual.
There’s a dedicated support site for questions, suggestions and bug reports. I monitor the site on a daily basis, and also employ someone to help answer questions.
Please have a look at the dedicated changes page.