ClearFax

ClearFax sends faxes from your iPhone, iPad or Android phone, without a fax machine. Scan the paperwork with the camera or pick a PDF, enter the fax number, and send. You pay per fax. One purchase covers one fax of up to 50 pages, and you see the price before you pay: it goes by page count and is the same whatever country you're faxing to. There's no subscription and no account. Each fax that goes through gets a receipt PDF with the destination, page count, time and result. If the fax network reports a failed send, your purchase isn't used up and you can resend. ClearFax only sends faxes; it can't receive them.