IOS developer for making a simple Iphone app (only front end)

Hi. I would like to surprise my 5 co-graduates. We met each other almost 20 years ago - and still meet 6-8 times a year to play cards (a card game called whist). I have constructed the formulas in Excel (it's not beautiful) - and next step is to develop an IOS app. The app is quite/relatively simple. I need to be able to (1) create a new card game event; (2) I need to be able to identify the participants (who are attending) including info in each card games (who are playing, who are not playing, if four are attending, who are "oversidder"); (3) I need the yellow columns to be entered each game; (4) I need to present the account each evening (column C:J in the spreadsheet); and (5) I need to be able to export all card games from an evening to Excel (thinking a .csv file will do it) Pls have a look at the spreadsheet and the visualisations, ask questions - and give an price estimate