1 dollar
Every app varies in cost, from free, to $1, to $20 or more.
$50,000 to $150,000 would be how much an app like Practo costs.
FREE!!
free
Once you buy an app, you can use it as much as you want.
About one dollar each
This question needs more information.
depending on your app, some are free though
$99/yr for Itunes
It is free to update the app.
£17.95 from their website.
wood+warter=boat