About Renala

Renala is a macOS disk space analyzer with treemap visualization. It scans your drives and displays disk usage as an interactive treemap, making it easy to find what takes up space.

This blog documents the process of building Renala from scratch — from zero knowledge of macOS desktop development to a published App Store app. It covers SwiftUI, Swift concurrency, performance optimization, and the App Store review process.

Renala is available on the Mac App Store.

Built by Dinh Doan Van Bien.