Costblok

The problem

Every number has to be trustworthy.

What shipped

Feasibility Studies (development cost, post-completion revenue, bank-friendly reports) and Project Payment Summaries (monthly spend, contractor payments, category-based financial summaries).

Role

Head developer and client lead. Built the financial engine, feasibility returns (IRR, NPV, cashflow) across seven currencies, Paystack subscription billing and invoicing, and bank-ready PDF reports. Authored about 97% of the current React rebuild. The original product was FlutterFlow; the rebuild is React 19, Supabase/Postgres, Deno edge and Paystack.

Stack