Unfortunately it can not use the GPS on the Curve. Don't get me started...it unfuriates me that Verizon considers the GPS unlocked but the ONLY app I've found that works is Blackberry Maps.
BUT...POYNT is awesome and I use it on my Curve all the time. I love the calendar and contact integration. I love the movie lookup. You can lookup a movie and when you find one you want to see, have it added directly to your calendar. This app will only be better once I have a device that it can use the GPS. But it's totally worthy even without the ability on the Curve. Just take some time to set up locations that you frequent and know you would be doing searches from.