Program concerning data entry. Accessable database.

Well i have a Macbook. And I'd like to create a program that can run on Mac.In a nutshell it's a data entry program ultimately a database program. I plan on learning Swift but am not sure if it is only for mobile iOS apps. I would also like it to be able use it on IOS. *** my current workflow I have database of items I keep track of (pretty much like an inventory). Am continuously adding more to the list. Just like an inventory there categories and sub-categories, brands and some repetitive key tag words. Am currently using Evernote whenever I need to lookup something I have to use search list to find anything. I also use a lot of images. Am attracted to Swift because am getting a Mac again and I understand Swift is fairly easy to learn for a beginner. Side note in a previous life I started learning c++ so I have a super basic of programming concept. Thank you for any help. #swift