The exact amount depends on how complex your application is going to be, but, in general, the price will be approximately 30% lower than the market average. We advise you to

• Find 5-7 software development companies with good reviews
• Ask them to estimate the cost of creating your project
• Remove the outliers (the most expensive and the cheapest quotes, those are likely unrealistic)
• Calculate the average of what you got
• Our price tag will be approximately 70% of that number