Investor Carrot requires you to cancel online, and Investor Carrot's own website didn't even work on some browsers, including my mobile browser. 

You can use it on your mobile browser, but we haven't yet built it into the app.  

Okay, I can't get the @ feature to work on my browser (Firefox) or maybe I'm not doing it right.

There is likely more freely developed software powering this website than paid software and that's excluding the free browser you're using to view it.  

Here's the link (I've found this feature does not work with all browsers / browser versions):http://www.biggerpockets.com/forums/25/topics/70678-bp-update-651-biggerpockets-blogs-add-at-mentions-and-threaded-comments

My state has a purchase contract that can be filled out online, but I'm not able to do so using iPhone with safari browser.

My state has a purchase contract that can be filled out online, but I'm not able to do so using iPhone with safari browser.

They are eager enough to sell to open a browser page,  enter a search query, read the SERP's enough to pick my site, click on my website, read it, and enter their info and ask me to please have a chat with me because they need to sell fast.THAT is what I care about and THAT is what matters!

Also, honey is a internet browser extension you can add on.

Storing all data in CSV file locally on my machine.Running script on my local machine in 4 browsers.