For those who still need to check how busy it is in some areas using the uber client app.
ONLY for ANDROID
You can download the old versions from :
http://www.androiddrawer.com/28131/download-uber-app-apk/
And dont forget to disable automatic update from android.
To turn updates on or off, follow these steps:
Open Google Play.
Tap the hamburger icon (three horizontal lines) on the top-left.
Tap Settings.
Tap Auto-update apps.
To disable automatic app updates, select Do not auto-update apps.
or more easy, after you install the new app go to android play, search for uber client app and then use the far right corner and press the hamburger icon ( three vertical dots ) and disable auto-update