Latest Calculator Version 2.1.1

APRM & Thermal Solver for RBWR

A lightweight, borderless desktop overlay for the Realistic Boiling Water Reactor (RBWR) Roblox game. Calculate reactor power (APRM) and steam flow requirements in real-time.

Download Latest (GitHub) Discord Server Source Code

Key Features

Designed to sit seamlessly on top of Roblox for quick monitoring.

Borderless HUD Mode

A borderless window that stays on top of Roblox. You can easily adjust the window opacity from 30% to 100% in settings.

Automatic Updates via Official API

Automatically synchronizes target demand values, and countdown timers in real-time directly through the official API.

Dynamic Power Solver

Calculates exact thermal requirements by dynamically factoring in power usage from feedwater, condenser, and recirculation pumps.

CURRENT BUILD DETAILS

Release Package: v2.1.1

COMPILED ON: 2026-10-21

Release Changelog: replace feedback page with a redirect to the website removed unnecesary shadows make the string in config follow the public AppVersion string update the "update window" to actually work, and proppely choose the right download for your os improve the crash report system and fix an issue with the exe release not using the packaged SkiaSharp version Replaced the preset demand buttons with a slider (suggestion #22) **Full Changelog**: https://github.com/Hotment/RBWR-Utility/compare/v2.1.0...v2.1.1

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