simulator-trainer

July 7, 2025 ยท View on GitHub

Simulator tweak injection and helpers

Usage

Drag an iOS app or tweak .deb file into a Simulator to install it

  1. Download/build an iOS app or iOS tweak (.deb).
  2. Boot a Simulator with simulator-trainer.
  3. Drop the file onto the sim window and wait for a respring.

Installing tweak status Tweak installed status

What it does

  • Turns Simulator.app into a dylib and dlopens it for in-process swizzling.
  • Mounts a writable tmpfs overlay on the simulator runtime.
    (one simruntime per iOS version, shared by every device model).
  • Injects a loader into libobjc.A.dylib to start tweaks.
  • Installs tweaks inside the overlay; non-sim binaries are auto-converted during install.

install ios tweaks

libobjsee

install ios apps

libobjsee

trace objc_msgSend

libobjsee

cycript

cycript