Maps is just a web app at the moment but there are apps for iOS and Android supposedly in the works: https://kagi.com/maps/
Kagi Translate is a web app and has apps available. You can do quick translations for free but the better models and features like document translation are behind the paywall: https://translate.kagi.com/
As for other features theres a list in the user guide. Mainly search, summarize, news, translate, maps and assistant. All in various stages of development, you can read more here: https://help.kagi.com/kagi/getting-started/