Calcura.
Calcura is a Next.js-powered calculation platform with Firebase persistence. It uses Jotai for reactive state, React Hook Form and Zod for validated computation inputs, and stores calculation history in Firestore — making it more than a calculator, a persistent financial workspace.
Tech Stack
Hosted At
calcura.ferrousapps.com
Standard calculators have no memory, no history, and no way to organise or revisit complex calculations across sessions.
Calcura persists your calculation history in Firebase, validates complex financial inputs with Zod schemas, and gives you a reactive workspace where numbers are tracked across sessions.
Key Features
Case Study
Users lose their calculation history every session and can't organise or refer back to previous computations.
Built on Next.js with Firestore persistence and Jotai state, validated by Zod so every calculation input is type-safe and storable.
A smarter computation workspace that remembers, organises, and validates financial calculations across devices.