Its hard to Setup Tcs app as compared to normal Apps, specially for the new members but once done successfully then its good to go. (PROS)
*No need to book manually you can book all shipment at once.
*Easy to use. (CONS)
* It doesn't fulfill order automatically and update Tracking info.
*Once order shipped you can't Track through order# (you have to go to Tcs shopify app to get the Tracking info, even Old E-Connect Tcs app was better for auto Fulfilling and updating Tracking Info) *(Error BUG) when you try to track from order# like click on TCS TRACK there will always be an error bug.
* No option to download PDF or Print directly from Shopify (You've to go to your Tcs portal to download PDF file or to Print. To Official Tcs Courier app (Please Update or make a better app and easy to setup and please focus on the cons). 4 Stars just because i need to book multiple orders at once and now its really easy for me. I've personally used many Courier Companies but i highly recommend people to use TCS Courier. (Good Pricing, Ensure timely payment directly to Bank Account, Faster, Staff very helpful, always respond to your email)