This installs the f.lux iOS app on your device without requiring a jailbreak. Learn more about f.lux at https://justgetflux.com/
This app changes the color of all running apps on your phone, even when f.lux is not directly open. Such functionality is not allowed in the App Store Review Guidelines, however this type of app is possible.
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Download (click releases above for file), then open with Xcode
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In the Project Editor, go to General > Identity > Bundle Identifier and append some characters to the identifier string to make it unique (anything but
com.justgetflux.iflux) or you may get an error saying "An App ID with Identifier 'com.justgetflux.iflux' is not available. Please enter a different string." -
Plug in your phone
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Select your phone from the device menu (next to the "Play" and "Stop" buttons)
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Click "Play"
There is an opaque, non-open-source app called iflux in this project. We trick
Xcode into signing and installing this app on your phone by:
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Building a dummy app "just an app"
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Splicing in the opaque binary during the build process
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Letting Xcode sign and install the app as normal
We are building the binary twice, once using source code, and again by splicing. This duplication is reported as an error by Xcode.