Live iOS invoicing app (XOWE) on the App Store: invoices, estimates, Stripe card payments. Earns from subscriptions + 1% fee on each payment. Full source code.
A completed invoicing application is available for acquisition, designed for freelancers and small businesses using iPhones. This app allows users to create invoices and estimates, share them as links, and receive card payments via an integrated payment platform. The system automatically manages invoice tracking and payment reminders. The application has a comprehensive tech stack including a SwiftUI iOS app, TypeScript backend, and a web payment page, and the entire setup has been documented meticulously for transfer to a new owner. Although the app has been live since 2026, it hasn't yet generated revenue or engaged in marketing efforts. Income potential lies in premium subscriptions and a 1% transaction fee on card payments. Its creator is seeking a buyer due to a conflict of interest with full-time employment. For purchase, the offer includes application source code, brand assets, and post-sale support, but not the current company's domain or server. The app is equipped with features to handle invoicing processes seamlessly, including offline usage, client notifications, and robust income reporting. Future growth opportunities include developing a corresponding Android app, offering localization beyond English, and extending payment and invoicing functionalities. This sale could interest developers, marketers, or financial tech companies looking for a ready-to-market invoicing application with an established product structure and potential for expansion.
Flippa’s platform is free for buyers. Here are our tips for first-time buyers:
Before making an offer
1. Look for verified sellers. Sellers should verify their email, phone, and government ID. When a seller has completed all verifications, we identify them with a checkmark like this:
2. Review financials. Financials are seller-provided inputs. Always ask for verified financials. Ask for a tax return or request access to their dashboard. if it’s an ecommerce store get a transaction report.
3. Review traffic. Sellers can grant you access to Google Analytics. Ask for read-only access to verify site traffic.
4. Schedule a call. Communication is key. The best way to find out more is to speak directly with the seller. For your protection, keep all communication within Flippa.
5. Make the offer on Flippa. We’re here to help. Flippa does not charge buyers and by making an offer on Flippa you’ll get access to our post-sales support team.
1. Agreements & Contracts.
Connect with a US-based lawyer or purchase asset-specific template legal documents via Flippa Legal.
2. Conduct Due Diligence.
You can conduct this yourself or use our trusted network of industry-leading due diligence partners. They can provide in-depth analysis, identify hidden risks, and independently assess the value of the business. Learn More