Receipt Maker is a simple tool for creating signed PDF receipts on an iPhone or iPad, with a web form for the browser. Add items, totals and a signature, then download or share the receipt in seconds with no complicated setup.
The free plan includes 3 receipts a month with a watermark, and Pro is billed through the App Store. An Android app is listed as coming soon. The site asks users not to create false documents.
I built it because small businesses and freelancers need a quick way to issue clean, signed receipts without heavy accounting software.