Shopify api doesn't match with dashboard

[profitrackinapp]

Hi, we're developing a shopify app for profit tracking and we have checked the Shopify Api's but did not find any method to get the analytics directly from the API's.
We have used the order API to get the Total Sales Revenue but it doesn't match with the correct sales using order API.
Shopify Dashboard : http://prntscr.com/s4pf1x
Our Api Data : http://prntscr.com/s4ph2h
Please check both the screenshot and see the difference in sales price
If we subtracted the Total_discounts from the Total price we getting difference with $10
We have checked all the possibility but did not find any way so they calculating the sales price
But in some dates we get the correct data as well. Please check in screenshot:
Shopify Dashboard : http://prntscr.com/s4pku3
Our Api Data : http://prntscr.com/s4plmq
Please give me advice on it

[ECI_EXCLUSIVE]

Hi,

Has this been looked into? I am having the same issue.