Hello, please send me your project, and the exact instructions, in few days, I can evaluate how much time will this take me, and how much I'll charge for it.
We play the long term game, we move fast, but I want to know if we're in the same page regarding the budget.
How much are you looking to invest in this database setup and configuration? I'm obsessed with security and it should be major in this project, even if you're not publishing on app store.
You also mention you don't want a login everytime, but that's exactly what you need in order to prevent intruders and sabotage your internal database, "remember password" function could be a possibility but that's another conversation.
If all above sounds good to you, let's get in touch.