SmartPack-Kernel Manager is a heavily modified version of Kernel Adiutor developed by Willi Ye. All the credits go to the original developer, not only for his hard work on Kernel Adiutor, but also for being open to open-source community.
Kernel Adiutor can be found at https://play.google.com/store/apps/details?id=com.grarak.kerneladiutor.

WARNING: I am NOT responsible for any damages to your device!

Before installing this application, please be noted that
💠 This app requires ROOT Access.
💠 This app needs BusyBox to be installed (especially, ‘unzip’ & ‘mke2fs’ binaries for auto-flashing & ‘curl’ or ‘wget’ binary for kernel OTA updates).
💠 Most features available in this app need kernel-level support.
💠 You can upgrade to the pro version of this app and unlock hidden features by purchasing SmartPack Donation Package available at at https://play.google.com/store/apps/details?id=com.smartpack.donate.
💠 Although this app is no way supported by the developer of Kernel Adiutor, buying Kernel Adiutor Donate can also…