Well, BL comics are usually stories that explore the love and connections between men. They can have various themes and settings, and often appeal to a specific audience interested in this kind of content.
We can find several online comic generators and AI comic generating software. Comicgen was a free comic generator that could customize and save comic characters. Another comic generator was StoryboardThat, which provided drag-and-drop functions and background scenes. The AI manga generating software included Touch Station, Quick Draw, and Touch Station AI, which could automatically generate drawing effects based on uploaded photos. There was also AiComicFactory and Shortbread, which were AI driven comic creation tools that helped users create comics and webtoons. As for the specific information about the comic creator app, the search results didn't mention it, so I don't know if such an app exists.
There were a few free comic reading apps that he could recommend. The first was Tachiyomi, an old and free manga app. There were no advertisements and it could be installed directly. The second was the Book Pursuit. This was an APP that Changqing had always recommended for reading comics and novels. It supported Android and Apple phones and had a full range of resources. There was also Meow Comics, which was an ad-free comic reading software that covered the entire web's comic resources and updated popular recommendations every day. In addition, there were also 36 Comics and MangaReader, and other free comics apps to choose from. Using these apps together, he could find more comics that he wanted to read.
Comixology is often considered one of the best. It offers a vast collection from different publishers and has good reading features. However, it might depend on your specific comic preferences.
I'm not sure, as most legal and authorized platforms charge for accessing manga. But be careful with free apps, as they might be illegal or of poor quality.