https://community.squareup.com/t5/Payments-Troubleshooting/Best-way-to-develop-and-sell-an-app-for-Square/m-p/841141#M67368 <P>We are a development company looking to produce an app that extends Square's default interface and functionality. In general, we want to:</P><P>&nbsp;</P><OL><LI>Create a custom customer-facing interface</LI><LI>Possibly add some custom backend UI components</LI><LI>Ensure data integration between our custom interface/components and the base platform</LI></OL><P>&nbsp;</P><P>To be clear: We are not seeking platform integration with our own existing, separate product or service. Instead, our aim is to develop a brand-new, custom enhancement to Square's native interface/functionality.&nbsp;</P><P>&nbsp;</P><P>Given these <EM>very general goals</EM>, we then want to sell the resulting application in Square's app marketplace.</P><P>&nbsp;</P><P>What would be the best way to get started? I assume there is some app development, review, and sales process or protocol that we need to follow, and we'd welcome any tips and/or references to corresponding resources.</P><P>&nbsp;</P><P>Thanks!</P> Sun, 19 Apr 2026 14:41:05 GMT jagg317 2026-04-19T14:41:05Z https://community.squareup.com/t5/Payments-Troubleshooting/Best-way-to-develop-and-sell-an-app-for-Square/m-p/841141#M67368 <P>We are a development company looking to produce an app that extends Square's default interface and functionality. In general, we want to:</P><P>&nbsp;</P><OL><LI>Create a custom customer-facing interface</LI><LI>Possibly add some custom backend UI components</LI><LI>Ensure data integration between our custom interface/components and the base platform</LI></OL><P>&nbsp;</P><P>To be clear: We are not seeking platform integration with our own existing, separate product or service. Instead, our aim is to develop a brand-new, custom enhancement to Square's native interface/functionality.&nbsp;</P><P>&nbsp;</P><P>Given these <EM>very general goals</EM>, we then want to sell the resulting application in Square's app marketplace.</P><P>&nbsp;</P><P>What would be the best way to get started? I assume there is some app development, review, and sales process or protocol that we need to follow, and we'd welcome any tips and/or references to corresponding resources.</P><P>&nbsp;</P><P>Thanks!</P> Sun, 19 Apr 2026 14:41:05 GMT https://community.squareup.com/t5/Payments-Troubleshooting/Best-way-to-develop-and-sell-an-app-for-Square/m-p/841141#M67368 jagg317 2026-04-19T14:41:05Z