App comparison

Add up to 4 apps below to see how they compare. You can also use the "Compare" buttons while browsing.

Software categories Blog & research About us

GetApp offers objective, independent research and verified user reviews. We may earn a referral fee when you visit a vendor through our links.

Our commitment

Independent research methodology

Our researchers use a mix of verified reviews, independent research, and objective methodologies to bring you selection and ranking information you can trust. While we may earn a referral fee when you visit a provider through our links or speak to an advisor, this has no influence on our research or methodology.

Learn more

Verified user reviews

GetApp maintains a proprietary database of millions of in-depth, verified user reviews across thousands of products in hundreds of software categories. Our data scientists apply advanced modeling techniques to identify key insights about products based on those reviews. We may also share aggregated ratings and select excerpts from those reviews throughout our site.

Our human moderators verify that reviewers are real people and that reviews are authentic. They use leading tech to analyze text quality and to detect plagiarism and generative AI.

Learn more

How GetApp ensures transparency

GetApp lists all providers across its website—not just those that pay us—so that users can make informed purchase decisions. GetApp is free for users. Software providers pay us for sponsored profiles to receive web traffic and sales opportunities. Sponsored profiles include a link-out icon that takes users to the provider’s website.

Learn more

Billing and Invoicing Software with API (2026)

Last updated: March 2026

Get free expert advice+1 (888) 216-6745

Call now for a one-to-one consultation in under 15 mins.

Key features of Billing and Invoicing Software

Based on GetApp's analysis of verified user reviews collected between July 2021 and August 2024.

Invoice Processing: Reviewers value the ease of creating, sending, and tracking invoices, with features like OCR for data capture, automatic updates, and streamlined workflows for efficiency. 94% of reviewers rated this feature as important or highly important.
Invoice Creation: Users highlight the ability to customize invoices, automate creation from tracked time and expenses, and use templates for a professional look. 94% of reviewers rated this feature as important or highly important.
Online Invoicing: Reviewers appreciate the convenience of sending and tracking invoices online, the ability to accept various payment methods, and automated notifications for clients. 91% of reviewers rated this feature as important or highly important.
Invoice History: Users find tracking past invoices useful for managing finances, auditing, and providing transparency, with features for filtering and searching historical data. 91% of reviewers rated this feature as important or highly important.
Payment Processing: Reviewers emphasize the importance of secure and flexible payment processing, with features for handling various payment methods and automating transactions. 90% of reviewers rated this feature as important or highly important.
Mobile Payments: Users highlight the convenience of managing payments on the go, with mobile apps providing quick and secure transactions from anywhere. 83% of reviewers rated this feature as important or highly important.