1. You prepare and send an ESTIMATE / QUOTE ,
2. Convert that Estimate to an INVOICE (or create a new one)
3. Record PAYMENT for that invoice
4. and finally send signed RECEIPT for the payment

Simple Invoice has been designed to have a simple interface and yet has all the features of professional invoicing solution. First few invoices are free for trial, after which you need to purchase a subscription.

Application Features
- Multiple measurement units.
- Multiple currencies and currency names such as USD, NZD, etc.
- Different Tax Rates for individual products
- No Internet Connection Required for generating PDF invoices
- Generate PDF and mail to your clients directly
- Choose from multiple templates for generating PDF invoice
- Home Screen provides quick access to recent invoices and payments

Invoices & Estimates
- Generate Invoices and Estimates Quickly
- See all invoices of a particular client at the same place
- Easily convert Estimates to Invoices

Payments
- Lumpsum payments are automatically assigned to invoices.
- Partial payments for an invoice
- Combined payment for multiple invoices

Charts and Graphs
- Analyse Invoice / Payment data
- Cleintwise Receivable History over past few weeks / months
- Which Products generate maximum revenue
- Which Clients generate maximum revenue

Backup and Restore
- Link your Dropbox account
- Backup your data on Dropbox
- Invoice PDF can be uploaded on Dropbox automatically.
This makes it easy for you to access them on your desktop when needed
- Backup all the Invoice in .SIM format on your Dropbox.
- Backup all the Invoice in .SIM format on your SD Card

Export Data
- Export details of invoice and payments as CSV and open it in Microsoft Excel

Add Products / Clients Easily
- Upload hundreds of products and clients easily using excel based template
- Import contacts from phonebook to quickly invoice those customers
- Create and manage product portfolio for generating invoices
- Store contact details of your clients for invoices

Outstanding
- See outstanding invoices and payments
- Graphs show you how outstanding payments has varied across time

Currency
- Allows using ANY currency by denoting it as 3 characters e.g.
CHF - Swiss Francs
ZAR - South African Rand
THB - Thai Baht
AFN - Afghanistan Afghani