Need a program that can go on my Mac (PC is acceptable but not preferred) that would allow me to post listings on Mercari (an iOS app) from my computer. It would need to be able to allow me to fill in all the necessary info. Mercari requires easily and all from my computer. I would also like to have a relisting feature that can copy old listings and repost them. Also, I would like to have a bulk listing feature where I can post many of the same items at once. The program should be easy to work and allow me to upload listings very fast.