I have used this app for my store for about 2 months now. $425 spend, and $12,500 in return. GREAT ROI right? Well, if this was accurate, that would be the case. However, I know from crunching the numbers that this is not correct. I thought maybe this was measuring Click Through AND View Through Conversions (the app never specifies anywhere on the site which attribution model it uses, which can be misleading). I decided to message the founder of the app.
He messaged me and said RetargetApp only measures Click Through Conversions. Now this is where I KNOW this is off. I can see the UTM campaign on my Shopify store, and this means that 1% of my traffic is bringing almost 20% of my revenue. (So basically I was either lied to, or the maker of the app himself is also misled, which I struggle to believe)
The oversimplification of the app causes me some distress. As a numbers guy, there is no way to measure this in the slightest, and test different variations or cross examine different retarget platforms. Also, since the revenue/profit it gives you is not accurate, the numbers yield relatively useless. If the owner knows that the numbers are not 100% accurate (which based off other reviews, he apparently does), this needs to be stated clearly in the app, or maybe taken off the store until it is fixed.
TL;DR :: Developer is not up front about the accuracy of the "revenue" metric within the app. Interface is over simplified. No way to really measure anything useful. Good if you are new to retargeting, but pay no attention to the numbers except the "spend" metric, because it means very little,