Let's list the remaining key apps missing from Windows Phone

Hey guys. I went and comparing my Windows Phone to my iPhone recently and was pleasantly surprised by the progress WP has made in recent months. The vast majority of apps I use on my iPhone are now on my Windows Phone and many are often more pleasing to use (although some are worse as well). That said, there are still some gaps, so let's try to list the remaining apps WP needs for at least key app parity and to dispel the notion the platform doesn't have apps.

Note: Let's exclude games from this - that is one place we know WP still has some catching up to do.

Missing apps:

American Express

Vanguard

Uber

Lyft

Tinder

Key Ring

Dropbox

Snapchat (6snap an unofficial alternative)

Yahoo Fantasy apps

Google apps (multiple unofficial alternatives)

Facebook Messenger (somewhat integrated into OS)

Duolingo

Lumosity

???