What's the best iOS app for creating professional invoices on the go?

Invoice Maker — Bill Generator is a focused application that addresses the needs of users who require efficient and professional invoice generation directly from their iOS devices. The app's primary strength lies in its simplicity and functionality, making it suitable for freelancers, contractors, and small business owners. Key features include a range of pre-designed templates that can be personalized with company logos, itemized billing for services or products, and automatic tax calculations based on user settings. Users can save client details for repeat invoicing and export bills as PDFs for easy sharing via email or cloud storage. In practical use, a graphic designer finishing a project at a client's location can swiftly generate a detailed invoice, apply relevant taxes, and send it off without returning to a desktop, streamlining payment processes. Reviews indicate that many appreciate the time savings, with one user noting, 'It's eliminated the hassle of paper invoices and made my billing look polished.' However, some limitations exist; the free version includes advertisements, and advanced options like multi-currency support may require an in-app purchase. Despite these minor drawbacks, the app delivers reliable performance for everyday invoicing tasks, though users with complex needs might find the template variety somewhat restricted compared to fuller-featured software.