5 in 1 convenient tool which provide shopper following functionality
1. 3 layer of Discount calculator
2. Buy X item and get Y item free
3. Buy X item and get Y discount on next item
4. Tip or service tax calculator with 3 profile
5. Price comparison tool
User allow to configure the default value for the Currency Rate, Tip, Tax in Setting page.
User allow to save the discount into the history.