Moon Invoice adequate

Moon Invoice does a relatively simple job of producing business forms for the price, though there’s room for improvements. I’d suggest the developer stop using the Apple App Store as it is convaluted and redundant in its requests to confirm your Apple ID, making it difficult to purchase applications. Sell your app on your own site and make more money.

Wizard of Cupertino about Invoice Generator: InvoiceAir, v1.5.3