About
LookInside helps you see what your app is drawing
Run your app, open LookInside, and click any view to inspect the UI tree.
Product focus
LookInside is a Mac app for debugging iOS and macOS UI. It shows views, layers, frames, screenshots, and editable properties while your app runs.
It continues the work of Lookin and adds modern SwiftUI inspection: hierarchy, modifiers, transforms, Display List IDs, and backing layers. LookInside also supports multiple inspection windows and includes Swift hash ID resolution so unresolved IDs can become readable module and filename hints.
Privacy boundary
Simulator apps connect locally. Physical iPhone and iPad devices connect over USB. The website handles downloads, checkout, and license support.