I just love the Mantano Cloud feature! I was reluctant to try it because it cost a little extra and I had a Kindle Fire so I mainly used my Kindles to sync back and forth. After buying a non Kindle android device I started using Mantano again as the Kindle For Android app is just pretty watered down when you are use to a Kindle Fire.
I love Mantano! It just keeps getting better and better. I decided to give the 10 day trial a run. I think by day two I was hooked and the bought the basic plan for $10/yr. I can't see me ever needing more.
Not only does it upload my books to the Cloud and then adds to all my devices. I can access the cloud on my web browser and edit collections or download my books. It also imports collections just like a Kindle.
You can delete a book from all devices too! How I wish my Kindles did this! It also syncs last page read, bookmarks...etc from the app. I am on cloud 9! WTG Mantano!
I really hope Mantano gets the Kindle Fire fix. I'd love to have the latest version although older versions work okay with the cloud. I am using 3 different ones and they all sync fine together. I do wish there was a search feature on the Cloud's website but the $10 a year to me is well worth it.
I am noticing selecting text seems to be harder on the latest version.
I hope they get all the kinks worked out.