SERPS checker app for iOS

Anyone know any good google serps checker for iPhone? When I used to use android, I've been using SERP Mojo which was free and was really great application to track rankings of keywords in google positions, but when I have made the switch yet I have to find alternative for iOS. I have been looking for a while now but haven't found anything that would be able to check and save multiple keywords at once.

Hi, check this app: serpgun
It is free and very simple