Hi everyone, I'm one of the Causal founders — we actually launched a super barebones MVP here on HN in 2019[1], back when we were still tinkering around on nights and weekends, and the reception + signups from that gave us the confidence to quit our jobs and go full-time on this, so thanks for the early support!

The product has come a long way since that first HN launch. The best way to think about it is as a 'multidimensional spreadsheet' — instead of writing formulas that operate on single cells, Causal formulas operate on "variables" that span lots of cells (e.g. multiple 'months', or multiple 'products', or multiple 'countries'), so you can express any kind of model with 100–1000x fewer formulas. Lot of other important functionality like live data integrations, dashboards, etc. but the multi-dimensional modelling system is really the secret sauce :)

Sounds super abstract, but the main use-case today is financial planning/reporting for early-stage companies, although some of our users have actually replaced their BI tools with Causal as well.

Anyway, thanks for the support and keen to hear feedback :)

1: https://news.ycombinator.com/item?id=19704418