The reason is that Houdini does not acquire Read-and-Write permissions from root on iOS, is because, you can install multiple tweaks and themes for iOS 10.3.2 without the need of fully jailbreak your device. This is called semi-jailbreak tool for iOS 10.3.2.
Houdini purpose is to use a background process named jailbreakd with root user privileges. So you can install more components into devices running iOS 10.3.2. To install Houdini, follow these steps:
Download the .ipa file and Cydia Impactor
Open Cydia Impactor and connect your device
Drag the Houdini.ipa file onto the Cydia Impactor window
Enter your Apple ID (email and password)
Open Settings → General → Profiles & Device Management
Trust the new certificate → open Houdini
Tap ‘start’ and enjoy!
What can Houdini do?
- Install theme.
- Add Cydia source and install theme from source.
- Clear application cache.
- Change device resolution.
- Theme passcode keypad.
- Change the color and size of badges.
Currently Houdini is only in alpha, so there are many bugs. You can refer to this tool on the Reddit community and you can download the beta version from iabem97.github.io/houdini_website..