Is there any way for me to scan tickets and check people in on the day of my event? (iPhone app)

Yes, there is!

We have a mobile app that works on any iOS device (iPhone, iPad, or iPod Touch) and lets you:

• Scan people's tickets at the door
• Search for customers by name or confirmation code and then check them in
• View your updated guest list and sales in real time

Not only that, you can have multiple people using the app on multiple devices at the same time, to get attendees into your event quicker.

It's available for download in the App Store: 

https://itunes.apple.com/us/app/launchtrack/id747593909