Zastron Labs

CASE STUDIES

Real problems, measured fixes.

One case so far. It is my own product, which means you can check every number in it right now. Client cases appear here when they ship, not before.

Case 01

Cario

Own product · pre-launch

The problem

A used car is the biggest purchase most people make on a guess. Owners of Toyota Corollas in Poland had no honest way to know what service is due, what a fair repair costs in złoty, or what their car is actually worth.

What I built

A mobile app on a measured data engine: a 47-point pre-purchase inspection, indicative repair costs in złoty, a value model by year, engine and mileage, and known-failure data read from hundreds of thousands of real inspections.

How it was done

The same discipline sold on the services page: every figure sourced, every claim checked twice, honest gaps shown as gaps. Built end to end by one person, from the data pipelines to the screens.

45 397Corollas counted in Poland

221 847inspections read

47checks in the inspection

32parts priced, verified twice

258automated tests passing

See the live data The Cario story →

Sources: CEPiK national registry · UK DVSA MOT (Auris platform proxy) · NHTSA · fleet-verified PLN price research

Case 02

Your business

When a client project ships, its case study appears here in the same shape: the problem, what was built, and the real numbers. Not before, and never invented. If you want to be the first, the door is open.

Tell me what is not adding up See the plans →