I like most about this tool it can be used offline as well so when internet goes down one does not loose any data from his account. The only thing i don't like in bill du is if you have multiple users your invoice will show different things with each user's details which makes billing process very tedious for me. Also, there are some features of bill du (like reporting) which were bit complicated but now they've made them more simple by giving option to customize reports easily. Try out once, as its best app ever! It helps us manage our accounts better & easy too handle all kinds of transactions we do through bills etc. I like how easy it was for me to use this program because I am not very tech savvy at all. It has been great so far! There are many different options you can change if you need too. The only thing I think could be better would maybe have more features. But overall I really do enjoy this app. This helps me keep my business organized by being able to invoice clients quickly with ease. With billdu there isn't anything wrong as of yet but I'm sure some things will pop up in time.