Hi, have you heard of Appzio, it's a platform that only costs 400 dollars/month to use. It has coding already developed to build apps (depending on complexity of app), and you pay month per month, so if you finish the app in 1 month, you don't have to pay more than 400 dollars.
What kind of app are you looking to develop? If it's an app to display content, this is the best solution. It's being used by companies such as Time Inc., BBC, Fashion industries, and many other media and tech companies.
We can have a quick chat to hear your thoughts, before you invest additionla money.
Thanks,
Marco