ios app development

We have a working prototype of an app we want built for i0s only. The purpose of the app is to allow people to enter a financial balance details over 3 'overlay screens', then the app saves them, and allows the user to edit the details and the app updates the balance according to user input. In the prototype, the values entered in the text fields are not fully showing and look like they're being 'masked' a little. They should not do this in the real thing! Please have a look at the prototype and make sure you're going to be able to get the same level of detail in the design as is in the prototype. This is vital and must be stuck to. For example, notice the underline that follows each character as it's typed. There is quite a lot of functionality in this app, as seen in the prototype. Please ensure you are able to code to the level required before offering a proposal for this job. We may have the files for a small part of the app thats already been built, or you may prefer to start the build again from scratch. We would require you to be able to upload the app to app store connect (ours) and talk us through the submission process and also address any issues if it's not accepted straight away into the app store. We use Zeplin for the wireframes, so you can have everything you need to get started straight away. We use slack to communicate and share updates. There will be ongoing monthly work for the right person, with updates to this app as well as future builds. We are are on a very tight time scale for this app, so please give approximate times for completion. Thanks very much!