Independent product
Topotronics
An independent app for road engineering calculations, with accounts, store release and subscriptions.
Problem
The product had to be more than a calculator: precision, store release and a subscription flow the user can complete. As a solo product, maintenance and billing are part of the same design.
My role
End-to-end development: app, Firebase, Asaas subscriptions and store publishing.
Solution
React Native with Firebase on the backend and Asaas for recurring payment. Subscription and access states are part of the product, not a later extra.
Impact
A published product under continuous maintenance, with an operational subscription flow. I do not disclose revenue or subscriber counts.