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. 2015 Oct 22;4(4):e125. doi: 10.2196/resprot.4600

Table 2.

Ph.o.S app: examples of database content.

Category Examples Behavior change techniques
Introductory messages Researchers have found 70 poisonous chemicals in cigarettes which cause cancer. Stay healthy! Provide information on consequences of behavior in general

Your shortness of breath when using stairs is much less now! Provide information on consequences of behavior to the individual

Ex-smokers have less than two cravings a day. You can manage this craving! Provide normative information about others’ behavior

You are a good example to others every day you stay away from smoking! Prompt identification as role model/position advocate

Is it worth giving up what you’ve worked so hard for? Definitely not! Prompt anticipated regret

Walk proudly! You are doing an amazing job quitting! Prompt rewards contingent on effort or progress toward behavior


Physical activities Walking: Walk and every 10 steps say: You can make it! Behavioral substitution + Prompt self-talk

Brisk walking: Walk briskly and every 15 steps say: You can do this! Behavioral substitution + Prompt self-talk

Stairs: Find a stairway to go up and down! Behavioral substitution

Breathing: Inhale for a count of 4, then exhale for a count of 4. Behavioral substitution

Tension release: Grab a ball and squeeze it with your right hand and then with your left hand. Behavioral substitution

Stretching: Stretch your upper arms. Hold for 10 seconds. Behavioral substitution

Balance: Balance on your right leg and then on your left leg for 5 seconds. Behavioral substitution

Strength: Do as many push-ups as you can in a row. Behavioral substitution

Isometric: Hold the superman position for 5 seconds. Behavioral substitution

Dance: Listen to your favorite song and dance! Behavioral substitution

Gardening, cleaning home physical activities: Do some housework! Behavioral substitution


Motivational messages Pain is temporary. Quitting is forever! Facilitate relapse prevention and coping

I can keep going! Enhance self-regulation

Never be a slave to cigarettes again! Motivation to remain abstinent

Do not go back! You are a permanent ex-smoker now!/You are a healthy ex-smoker! Motivation to remain abstinent

Concentrate on your goal! Maintain engagement

It’s not the situation; it’s your reaction to the situation! Provide information on withdrawal symptoms

I want to feel like a winner, not miserable after 3 minutes! Prompt anticipated regret

My actions are always within my control. Self-regulation/self-control