Zero Cigarro is a free Android app developed by Syligo to support people who want to quit smoking. Created by a psychiatrist and a psychologist specialized in chemical dependency, the program is evidence-based and offers motivational messages, practical strategies, perceived benefits, and common symptoms to help quit smoking according to the user's phase and moment.

The app features two programs: one for smokers who want to quit and another for caregivers who want to help a smoker quit. The smoker program has four phases: preparation, reduction, prevention, and maintenance. It includes features such as tracking the number of smoke-free days, money saved, and time saved, as well as a personalized response to the user's daily cigarette count. In case of an emergency, the app also includes a red button to avoid relapse.

The caregiver program has two phases: preparation and prevention. It provides information and practical strategies to motivate the smoker to quit and helps them stay smoke-free. The caregiver can also use the red button to assist the smoker during a relapse. The app is available in Portuguese and based on international scientific research that supports mobile technologies as cost-effective tools for smoking cessation.