eBay listing with IPad

[Idmcg]

I am a complete novice with an IPad Air. I was fully conversant with Turbolister on my PC but now have only An IPad Air.
Please could anyone suggest an app / programme which I can use to create eBay listings.
I have subscribed to GarageSale, about 7 $ but can only view the example shown, a multicoloured elephant. I can go no further with it.

Help please. I'm tearing my hair out!!!