Hi there! I understand that you are looking for apps that you can use for coding HTML/CSS/JS and C++ on Android, other than Cxxdroid. Here are some applications that you may find useful:
1. AIDE – IDE for Android Java C++: This app comes with interactive coding lessons and supports building of native applications for Android, as well as HTML5-based browser applications. It also has an integrated debugger and a visual editor for the design of your app interface.
2. Dcoder, Compiler IDE: Code & Programming on mobile: Dcoder supports over 50 programming languages, including C++ and JS. It is designed specifically for mobile use, making it ideal for on-the-go coding. Dcoder also incorporates a rich set of examples and has a compiler where you can run your code.
3. AnWriter free HTML editor: AnWriter is an HTML editor designed for Android. It offers support for HTML, CSS, JS, and even PHP. It also has features like syntax highlighting, error checking, and auto-completion, among others.
4. QuickEdit Text Editor - Writer & Code Editor: This is a fast, stable, and full-featured text editor for Android that allows you to code in over 50 languages, including HTML/CSS/JS and C++. It also includes a handy file browser that can be used to open and save files from any directory on your device.
5. SoloLearn: Learn to Code for Free: This is another option you might want to look into. It's a learning-centric platform that offers lessons in numerous coding languages, including HTML/CSS/JS and C++. You can write, run, and share your code within the app.
Please note that the efficiency and usability of these apps may vary depending on your device and your personal preferences. Each of them has their own set of features that may be more or less appealing to different users. I hope this helps!