difference between ArcSWAT and AVSWAT

[Hidemi]

Dear All,

I have been working latelly with ArcSWAT and I was wondering what the
difference is between ArcSWAT and AVSWAT. Althought I haven´t worked
with AVSWAT, the only difference I found is the output map at the
AVSWAT. Am I right? Is there any other difference?
Can anyone help me with that doubt?

Thanks

Hidemi