Hi, I checked out the attached screenshots of the reference app. Before you read any further I am an iOS developer, and only develop apps for hat platform. I am an expert and can design and develop your compound calculator app, something that will be light years ahead of the current design examples provided.
I am more than happy to provide a free demo before you hire, to give you a taste of my skills. A real app you can test on your iPhone. Understandably, I wouldn’t provide the source code for the demo, but would provide a real app you can test out. In the event you like it and would like to hire me for the full iOS app, I will up and running to complete the whole project.
I can do this for $1,000 AUD, ready to work immediately with a strict completion deadline of being completed in 12 days.
I assume that all data (formulas) needed for the valuations will be provided by yourselves and that this data will be local to the device and will not use a cell connection or backend API to determine any results. I will create all the logic needed to run this based on your input in a stand-alone iOS application and will be with your from conception to completion to App Store submission and guaranteed Apple approval.
Hopefully the high standard of quality I set can be adopted into an Android version by a separate Android specialist at a later stage...