You can record 100 samples into it up to 30 seconds each and then trigger them like you would with a novation launchpad.
It could use some feature tweaks but it works great as is.
Audiobus compatible.
I found it while browsing through the newest apps listed on the Audiobus in fact.
This thing triggers really great could easily be set up with drum loops and synth phrases ect.
The pro version which I have not tried yet is only $3.99 but I so far can't find out what the pro version offers. It appears to be some sort of looping feature.
I can not wait to play with this some more.

It is free and if you are looking for an extremely easy to use sampler, this is your app to try..