No..you don't. I have one of those. I'd give it to you if we were closer.

Runs off triple A batteries. Uses them up quickly.

You will be MUCH happier with 2 cards per camera. Swap in field. View at home on computer.

But...it's your $$$.

https://lowdownviewer.com/product/lowdown-trail-cam-viewer/

Lowdown viewer, the best I have found, works excellent in seconds, not minutes, only does SD cards, not a computer, hook to a tv in town or at the cabin. I take it into the tree stand and check what was there while I'm hunting. You can blow up the pictures, scan through them fast, save them to another smaller sd card, or just delete them and put the card back in the camera when your done looking at them. Works excellent and I use it remotely in Alaska, just needs to be charged first. Last for days too. 9 inch screen so you can see the pictures really well, then you can blow them up and also zoom in if you really want to know if it's a legal or not. We hook it up to a tv. at the cabin and share it with everyone after the hunt at night.

Swamp wolf is exactly right on the viewer. I have a tablet I bought from wally world that I carry with me to read cards .You can them for about a croaker at wallys.

100 dollars..

Been there...done that...

Finally got smart and bought 2 cards for each camera. Now I do a card swap in field and view pics at home on computer instead of the small screen of a card viewer or phone.

Use same cards in same camera. You'll save yourself some aggravation.

Interchanging cards between cameras, especially different brands of cameras, and using card readers to view pics causes glitches on the SD cards that eventually cause them to corrupt.