Vinosmith offers a "lite" mobile-optimized version, which is accessible on both iPhone and Android.

To access Vinosmith go to Vinosmith.com in the browser on your phone - scroll down to the bottom of the home page and you will see a button to "View Mobile Site". Click on that button. It is recommended to bookmark the subsequent sign-in page.

If you have trouble signing in on an iPhone then check the following settings:

1) Ensure that "Private Mode" is NOT enabled in Safari. You can check this opening up Safari and clicking on the "tabs" icon in the bottom-right of the toolbar. On the next screen in the bottom-left is a "Private" flag, ensure this is not selected.

2) If you are still cannot sign-in then check that Cookies are enabled. You can check this by going to the general iPhone settings app, scroll down to "Safari", then in the "Privacy & Security" section you will see an option to "Block Cookies". Ensure that the "Always" option is NOT enabled. You can safely choose either "From third parties and advertisers" or "Never".

Finally, if neither of these options work and you still cannot sign-in using Safari then its recommended to download the Google Chrome app from the Apple App Store and use that app instead of Safari.