How to install community created smart app

with a basic question like that I’m obviously new to the community…about 2 weeks. I have “searched” the above topic and cannot find a document or tutorial that appears to address this…maybe I missed something?

I have my hub running as a basic security system and am pleased with the outcome. Now I am looking to use a Minimote as a FOB to arm and disarm, maybe using Buttons +, or something. However the first step is to figure out how to install one of the community created smart apps onto my iPhone Smartapp.

I have enjoyed reading and learning the varying uses and creative solutions to the Smartthing device and hope that I have posted this question in the correct area.

Thanks

Welcome to the community! This should help: