Over the next two years, the cost of maintaining an app typically accounts for 35 percent of the total budget spent on original app creation. Please keep in mind that the amount will not be less than $5,000 to $10,000 per year. According to recent estimates, around 50% of the app development cost will be spent on maintenance in the first year, 25% in the second, and 15% – 25% in each subsequent year.