ReluxDesktop vs Visual Interior Tool: Which Should You Use?
The verdict
ReluxDesktop and Visual Interior Tool are both home & construction design tools, compared here side by side. ReluxDesktop is free, with limits (Paid) and is a desktop install with no browser version; Visual Interior Tool is truly free (Free) and runs in any web browser with nothing to install. The biggest difference is cost: Visual Interior Tool is truly free, while ReluxDesktop is free, with limits (from Paid).
Free tiers & pricing last verified Jun 23, 2026.
Pick ReluxDesktop if…
Free, with limitsLighting designers who also plan sensors
Pick Visual Interior Tool if…
Truly freeQuick interior fixture-count estimates
Side by side
ReluxDesktop
Free, with limitsFree for personal, educational and commercial use with member luminaires; using non-member products needs a paid ReluxThirdParty license.
Visual Interior Tool
Truly freeCompletely free web lumen-method calculator for a rectangular room; gives average illuminance and fixture spacing only, not full point-by-point analysis.
Read the full reviews
ReluxDesktop
Free for personal, educational and commercial use with member luminaires; using non-member products needs a paid ReluxThirdParty license.
Visual Interior Tool
Completely free web lumen-method calculator for a rectangular room; gives average illuminance and fixture spacing only, not full point-by-point analysis.
ReluxDesktop vs Visual Interior Tool: questions, answered
What is the main difference between ReluxDesktop and Visual Interior Tool?
The biggest difference is cost: Visual Interior Tool is truly free, while ReluxDesktop is free, with limits (from Paid).
Is ReluxDesktop or Visual Interior Tool free?
ReluxDesktop is free, with limits and Visual Interior Tool is truly free. ReluxDesktop: Free for personal, educational and commercial use with member luminaires; using non-member products needs a paid ReluxThirdParty license. Visual Interior Tool: Completely free web lumen-method calculator for a rectangular room; gives average illuminance and fixture spacing only, not full point-by-point analysis.