20 seconds is an extremely simple app whose only purpose is to delay you by 20 seconds.
Why, one might ask, would you want to be delayed by 20 seconds? Well, there is a theory that says that 20 seconds could help you build a habit, or help you break one.
For example, if your goal is to go to gym first thing in the morning, you are much more likely to actually go if you packed your bag the night before and in the morning all you have to do is get dressed, take the bag and leave for the gym.
If, on the other hand, you wake up and think: "Where are my shoes? Did I wash my kit? I need to find my water bottle? I need to find my bag and pack all this." All that feels like it's going to take longer than twenty seconds and although you are still facing only a few very simple tasks, it feels like too much and that it's much easier to stay in bed.
So, if you start your activity within twenty seconds you are more likely to do it. If you don't you are more likely not to.
This is true for negative habits as well. If, for example, you find yourself attempting to check your favourite news site for the 37th time instead of studying or writing that report that is due tomorrow. Or you see yourself reaching out for a cigarette lighter due to stress in the day three after you've stopped for good... The theory says that delaying these for twenty seconds may make it easier not to succumb.
20 seconds app helps with that - it makes you pause for 20 seconds before starting an unwanted or time-waisting activity.
Simply start it when you feel the urge, the app will start counting down to zero. That's it. There is no stop button. At the end of 20 seconds, you get a satisfying crowd cheer and/or a high five. See how you feel about your habit at that moment.
Repeat a few times and you may end up changing it.