Depending on which browser you are using to surf the web, you may or may not be able to download extensions to change it's behavior. Chrome on Android does not appear to support extensions, but you can always favorite Feathermarks to have it ready to open from your New Tab page. For Firefox on Android, New Tab Override appears to be a popular and trusted extension.
Once you have picked an extension for your Android browser, you'll want to set the new tab url to https://feathermarks.com/home to have it instantly open to your account dashboard.