Learn Ways to add and customize themes in your online store. With Builderfly, you can seamlessly set higher business goals and sell your products to the targeted customers with the right marketing strategies. Some major advantages of creating your business with Builderfly are that there is No Transaction Fee and you get an iOS and Android mobile application. Builderfly is professionally designed for sellers of all ages. You can build a brand new online store as well as integrate data from an already existing online store.