The Purchase Order App - PO Builder, developed by IWTech Mobile, is a free Android app that allows you to create professional purchase orders, invoices, and estimates quickly and easily. With this app, you can easily prepare digital purchase orders and email them directly to your suppliers in PDF format. You can also track outstanding orders and accounts payable for your business by viewing the status at any time.

One of the most impressive features of this app is the ability to build professional purchase orders, invoices, and estimates with customizable templates and unlimited theme colors. You can also add your company logo for custom branding. The app includes a menu of all your inventory items and rates, which you can easily apply when creating POs to save time. Additionally, it has a virtual signature pad that allows you to authorize POs quickly on the spot or remotely, speeding up PO approvals.

Overall, Purchase Order App - PO Builder is a powerful app that offers a range of useful features for businesses. It provides multi-currency support, customizable templates, and lets you add tax, discounts, shipping and handling, and amounts already paid information to your purchase orders. The app also includes an audit log to keep track of who does what with the POs and custom user permissions to limit access.