Need very simple, an ios app & an android app to develop & publish on Stores

We need a ios app & android app developed & published. It's a simple calculator,what should calculate "Zakat" ...All we want is the features of this page [login to view URL] N.B: If you don't know about "Zakat" then search on Google & read the wiki page. So, we require a single app to be published on two platform iOS app store & on Google Play App store. We will pay for the publishing of the apps like $25 for Google play. Our budget is $150 for the apps to be developed & published. We will make the fund to escrow, when we see that, apps has been published we will release the fund . We will not release fund not seeing the apps live on Google Play & iOS apps store for. The App should compatible with the latest iphone,ipad & android devices. You have to make sure that our Apps doesn't get removed. You have to be accounted for that. Thanks