This release does not have a Play Store Description, so we grabbed one from version 1.21.1:

Periscope lets you broadcast and explore the world through live video.
See where news is breaking, visit a new place, or meet people and share interests - all in real-time.

Use Periscope to:
• Broadcast live video and interact with people through hearts and comments.
• Discover popular live video streams from around the world or search for broadcasts by location or topic.
• Missed out on a live video? Don't worry - watch the best parts with replay highlights.
• Instantly share your live videos to Twitter and other social networks.
• Broadcast privately to specific followers or friends.
See available APKs
There's a newer version available below!

This release may come in several variants. Consult our handy FAQ to see which download is right for you.

July 30, 2015
Android 4.4+
All Releases
February 28, 2018
February 3, 2018
December 15, 2017
November 28, 2017
November 18, 2017
September 21, 2017