Here’s how to get Glass apps onto your device:
1. Click on the install link
2. Sign in if necessary
3. You should see a screen that looks like this. Click on “Allow Access”.
4. Go to the My Glass site.
5. Go to Sharing Contacts.
6. A new card for your app should be in among your contacts. Click to turn it ON.
The Glass Tweet app works just as you’d expect. Go to a photo on Glass, “Share” the photo, and now a new option is available to “Tweet” it. Easy as can be!