Technical deep dives, updates and reflections on building fxEnginehttps://www.fxengine.iohttps://www.fxengine.io/blog/2026-01-04-welcome-to-fxenginehttps://www.fxengine.io/blog/2026-01-04-welcome-to-fxengineIntroducing fxEngine: A statically-typed formula engine extracted from 12 years of Calcapp developmentSun, 04 Jan 2026 00:00:00 GMTNewshttps://www.fxengine.io/blog/2018-04-09-launching-after-15-yearshttps://www.fxengine.io/blog/2018-04-09-launching-after-15-yearsWhen our co-founder David was 21, his father asked him to create an app for the hospital department where he worked. 15 years later, that request has resulted in the Calcapp you know today. In this essay, David chronicles our long history and the road that led us here. Mon, 09 Apr 2018 00:00:00 GMTDavid PolbergerEssays