Geo-social aggregator The Hotlist has launched a new iPhone app aimed at letting users see the latest on their friends’ present and future social destinations, as well as venues and activities near the user’s current location.

The Hotlist launched last year, claiming to be the first geo-social aggregator. Its platform calculates the popularity of events and venues, offering analytics and ratings for social planning.

The app compiles info from sources like Facebook, Twitter and Yelp, and filters public social activities of over 100 million people worldwide.

"People work and people play. However, planning even the smallest get together can be very time-consuming and frustrating," says The Hotlist CEO Gianni Martire. "Our mobile app allows people to make the most out of their social life by giving friends a place to share their social plans, eliminating the stress of phone tag, endless text messages and disappointing evenings. The Hotlist instantly gives people information that used to take hours to figure out, a one-stop app to organize your social life."

The Hotlist claims to have over 160,000 monthly active users, and the release of an iPhone app should only boost that number significantly. Then, the company will launch Android and BlackBerry apps at some point. No specific dates for these are mentioned, but they said to expect them "shortly."