This study will compare two smartphone apps to help adults quit smoking cigarettes. This study is conducted by scientists at Seattle's Fred Hutchinson Cancer Center so we can learn how to best help people quit smoking.

Join the study now, and if you're eligible to participate, you'll get access to a smartphone app that offers 24/7 expert guidance, including:

• Guidance for starting and maintaining a smoke-free life
• Step by step guide to help with cravings, withdrawal and slips
• Tools that help you track your progress
• Suggestions to help you stay motivated and for handling difficult moods

Be paid up to $124 for participating in this study.