Red Rat in Hat full logo

Independent app development

Small, sharp software tools.

Red Rat in Hat builds focused apps for racing, calculation, and practical digital workflows.

PE Patsukevich Aleksandr, Armenia, app development and publishing

Featured product

RaceLineCalc

Own product Android available

Calculate the racing line from a track image.

Calibrate the 2D track, then compare point, car, and motorcycle models by racing line, speed, braking, acceleration, and lap time.

Android available iOS unavailable Web unavailable
RaceLineCalc app home screen RaceLineCalc line analysis screen Car model parameters - RaceLineCalc

Published products

Selective publishing for independent apps.

No public projects listed yet.

Read publishing policy

What we build

Motorsport tools

Specialized applications for racing analysis, planning, and performance.

Local-first utilities

Privacy-friendly tools that work offline and keep user data under user control.

Store-ready apps

High-quality applications prepared for major app stores.