Cost of any app is depends on various factors like complexity, time of completion, developers and also what features you want to include in it. It can be vary from different requirements. So, cost structure is as follows:

• Cost of Andriod or iOS App - $1000 to $30000
• Simple medium complex $1,000 to $50,000
• Simple, table based app – $1,000-3,000
• Database App (native) – $4,000-$50,000

So, generally cost of mobile app is starts from $1000 to $30000. As we discussed above it can be vary from different requirements.

Here i suggest Top Mobile App Development Company in USA

It depends on features, but the average will be $50

Hi, the price completely depends on your business requirements and the custom features that you look for in the app.
I suggest you consult one of the companies  by nameFortunesof IT Innovations, one of the best mobile app development company in Australia
(https://www.fortunesoftit.com/au/mobile-app-development-company-australia/).
 

Here is a blog that will answer this in detail:
https://www.aumadi.com/blog/how-much-does-it-cost-to-develop-a-web-or-mobile-application

This really depends on the software developer. We use Flutter, but React Native will also mean you can write the code once and deploy on both iOS and Android. 

We typically do both but can also do a web app, so people on computers, or ones who want to use it on a phone in Safari/Chrome and not download your app at all can still use the app.

So the cost if your developer is using Flutter or React should be the same for both, maybe a slight additional cost to add web app as the layout is a bit different on a larger screen.