Setting up a tablet at an open house might make you look like a tech-savvy agent, but it's all flash and no substance without the right information-gathering app. Using your iPad, you can gather contact information onsite from house hunters using the Open Home Pro app. After determining whether they are represented by an agent or are preapproved, you can jot notes as you tour the listing with them. Using the app on your iPhone, spread the word about open houses, too. You can take photos and add details about the listing, and the app will help you create and send HTML e-mails from your phone and post Facebook updates about the listing. Finally, each listing gets its own mobile-optimized landing page. $14.99. Open Home Pro; San Francisco; www.openhomepro.com.