Invoice Simple is a fast and easy invoice app for sending invoices and estimates to your customers.

Invoice Simple is the perfect invoice maker for small business owners, contractors and freelancers needing a simple and professional mobile invoice app.
Create, send and track invoices and estimates easily on your phone. Manage all of your billing while on the go so you can get paid faster.
Send the estimate or invoice before you even leave the customer!

you can use it for inventory management and as an accounting app. This bill book app helps you to manage and grow your business.

Features:

• Estimate, invoice and bill for any product or service
• Send estimates to customers, then convert them to invoices later
• Customize your invoice template as much or as little as you want
• Customize invoice fields: quantity, rate, and item number
• Include invoice payment terms: 30 days, 14 days, etc
• Generate receipts with a pre-built receipt template
• Discount on item or total
• Tax on item or total, inclusive or exclusive
• Customize your company logo on your invoice templates
• Create a PDF invoice or estimate with a built-in PDF invoice maker