Hello, my name is John and I am a Swedish Mac & iOS Developer residing in Berlin, Germany.
Well, wow, very detailed. There's quite a bit of data to enter via per player. This is all doable in a iPhone/iPad app. But there might be quite a few screens to achieve it, at least on the phone. It's also a lot more work to do both.
This is why you're getting higher bids from some of the better developers.
If you want to keep the cost down, I suggest you go with an iPad app, with as much data entry as possible crammed into as few screens as possible.
Another thing I need to ask about is the central database and submitting to it. What kind of database is this?
Could you expand on how you see yourself using the app.
Do you want to sell it, or is it only for your own use?
I can definitely make this happen for you, but it's not easy to estimate (time & cost) without having more information.
Please feel free to reach out over the chat with more information so that we can discuss further.
Best,
John Grönlund