First many thanks for the amazing app, it is simple and clean.
These are some suggestions and bugs reports:
1- Login username is case sensitive.
2- In the (Sale Report) the (Profit) is NOT calculated correctly if you sell more than one unit.
3- Ability to export reports to Excel or so.
4- Ability to export the database to Excel or so.
5- Printing receipt could be improved.
6- A bug in the (Reports) section, that duplicates (Sale Report & Purchase Report) in the drop down list.
7- The ability to schedule backing up the database.
8- Instead of the searching field there should be a drop down list with the existing items for (Category) or (Product name) etc..,
9- Ability to filter (Sale Report) & (Purchase Report) by (Product).
Thanks for you great work.