This listing offers a premium startup app that is currently active and operational. After a temporary dip in sales due to a 50% price reduction on its subscription model in early 2019, prices have returned to normal since August 2019, coinciding with a rebranding and UI/UX redesign. The app boasts 32,000 registered users and a 4.7-star rating on the App Store. It operates with minimal overhead, approximately $70-80 per month, and requires no marketing or advertising, relying solely on organic sales. The app processes an average of 1,200 transactions monthly, generating significant invoice values across the USA, Canada, Europe, and the UK. The business has a lean operational setup with just a designer and software engineer and has been self-funded with no external investors. It also turned down a $750,000 acquisition offer in 2017. The sale includes the user base, Apple Developer Account, premium domain name, source codes for both the app and web app, backend systems, and three months of handover support. The app generates revenue through monthly and yearly subscriptions and incurs expenses like web hosting and Sendgrid email storage. Despite limited marketing initiatives in the past year, the app has been featured by Stripe and Apple across various platforms. The potential for future growth lies in marketing and PR activities, as the product is considered complete and ready for expansion. The sale is prompted by the current owner's health concerns, preventing further product development.