We make apps what are simple to use. What we can do is a solution that is cost effective. All Websites are mobile friendly, and they will work on small phones too. So the way a lot of apps work is they simply go to your mobile friendly website. A good example of this is the FaceBook App when you use it you just go to the website and that is mobile friendly so you only have to build a site and just a simple app that simply goes to your website. We do this on Google Play  and the cost is just $200 per app. Here is an example if a website where we did this you can test it out and see how it works. Click this link or on the image below and see the app on the Google Playstore