Script Editor

This is a super powerful tool! It allows you access to features otherwise inaccessible in Shopify. For those who are complaining you can only run 1 script at a time - you can create multiple "campaigns" within a script. Each campaign is basically a totally different script so you can accomplish different things at once. There is a character limiter on the script editor so you can't have a million scripts running at once, but it's reasonably high + you can use a minifier to reduce the size of your code.

Very good App and can help a lot in your store but there is a bug: you can only run 1 script at a time and that is really really bad...
Check out my store here: http://bit.ly/2nJhgyr
I have a lot of script running at a time because I built them...