Let's say you have a typical basic cell plan with unlimited incoming minutes. Let's also assume they give you 100 free outgoing minutes with this plan.
100 minutes / 30 days = ~3 minutes a day per month
Our fee of 10 dollars each month is equivalent to 29 minutes of additional local minutes from your local phone companies. That is about 1 minute each day.
Using the plan above, if you spend four or more minutes on outgoing calls each day, Call Devil will save you money. And the best part is, the more you talk, the more you save.