Billdu: Invoice Estimate Maker is a free business and productivity app designed for Android devices by Billdu LTD. The app combines the features of a PDF receipt maker, bill payment organizer, and easy invoice maker. It offers a ready-to-use template, which saves time and is easy to use. The app allows you to accept card payments, track and upload expenses, and share or print PDF receipts. Billdu can also be used as a business tool for online booking, online store, and to communicate with clients. With Billdu, you can create professional invoices, estimates, and purchase orders in just a few seconds.

The app offers an invoice generator with five templates, estimate generator, and receipt maker. You can add your company logo, signature, and choose a color to customize your templates. With Billdu, you can scan bills, track expenses, and manage your inventory. The app also offers a Pay Now button on your invoice, which helps you get paid up to 9 days earlier. Additionally, you can create an online store, schedule appointments, and accept price requests from customers. Billdu offers a 30-day free trial with all features unlocked.