Default Very Simple Database App

hello, I want to create my own database app. I often have to store my customers and clients data. I want to create an app that allow me to store clients data. Just a simple form type. For example Title, First name. last name, address and contact details and all. I should be able to edit details later on. I don't want many options.
Is there any easiest way to create app like this or any existing app that can allow me to do all this.
I am not a programmer or developer.
Please help me.
Thanks in Advance.