This is a slightly edited version of my answer to the  following Quora question:  Usually, there are many apps in the market, the developer remains blissfully unaware of them, develops a similar app without being cognizant of the other apps, and then wonders what went wrong. Yours is the right question. It’s a pleasure answering it even though I’ve...
                                        
                                        
                                            
                                            
                                                /payments