How to Clean Up Xcode and Free 30-50GB on Your Mac

Xcode is the single biggest storage consumer on most developers' Macs. A fresh install starts around 35GB, but over months of development it quietly grows to 80, 100, even 150GB+. Most of that growth is invisible — cached build products, old simulators, debug symbols for iOS versions you no longer use. I've been building iOS apps for years, and this problem is exactly why I built MegaCleaner — I got tired of manually tracking down these hidden folders every few months. But whether you use a tool or do it by hand, you should know where the space goes. This guide covers every Xcode storage category: what it is, where it lives, how big it typically gets, and whether it's safe to delete. No guesswork, no vague advice — just exact paths and clear safety levels. Quick Reference Before we dive in, here's the full picture. Bookmark this table — you'll want it next time your Mac complains about storage. Category Path Typical Size Safe to Delete? DerivedData ~/Library/Developer/Xcode/DerivedData