TINU 3.0 BETA 1 has been out for a few days and works well. According to the author u/ITzTravelInTime there will be a new beta in another few days which will include support for an advanced option to add your OpenCore EFI folder, as an alternative to adding a Clover EFI folder.

Download link provided by the author: https://github.com/ITzTravelInTime/TINU/issues/10
Beta testing Telegram Group https://t.me/TINUBetaTesting

Description: This software is intended to be used to create a bootable macOS installer for mac and hackintosh, it's basically a GUI for the createinstallmedia executable that could be found in any macOS installer app from Mavericks up to the latest versions.

TINU allows you to create easily a macOS install media without messing around with command line stuff and without using disk utility, and also detects and prevents the most common errors with the creation of bootable vanilla macOS installers.

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Features:

• Simple-to-use UI that allows you to easily start the bootable macOS installer creation process.
• It can work with every macOS installer app that has the createinstallmedia executable inside its resources folder (including also beta and newly released installers).
• You can use any erasable volume that is at least 7 GB of size (if the volume's drive is not in GUID format, TINU will re-format it accordingly).
• Can work with the Mac OS recovery system, so you can create a bootable macOS installer from the macOS installer itself or from the macOS recovery partition, and you can use TINU to install macOS, too.
• 100% clean: The bootable macOS installers created with this tool are vanilla, just as if you created them using the command line "createinstallmedia" method in Terminal.
• Open Source: You can verify what this program does on your computer and you can create your own version by downloading and playing with the source code.
• Does not require any special preparations. Just open the program, make sure you have a USB drive plugged in and have a macOS installer app on your disk.
• No need to use Disk Utility. TINU can format your drive or partition for you.
• Integrated EFI partition mounter tool.
• Works using the latest versions of macOS and will also support newer Mac installers out of the box without requiring an update.
• Offers advanced features to customize your bootable macOS installer.
  

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The development branch on github has been updated with the new BETA, the name of this new version is version 3.0 BETA 1, there are some screenshots attached with some of the changes and also a copy of the app for you to try

The source code is available here: https://github.com/ITzTravelInTime/TINU/tree/development

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