I've tried out HomelabOS and agree with @jdaviescoates assessment. Installation of apps on Cloudron is smoother, especially considering some features such as email and user/group management are ready for use. Installing apps, setting scheduled backups and mounting volumes from the UI is also a nice touch. For HomelabOS, I believe the installation of apps and other HomelabOS-specific functions are done through the command line, which may not appeal to everyone.
However, HomeLabOS has its advantages in the sense that there are some apps on HomeLabOS which are not available on Cloudron (e.g. Miniflux), so it also depends on your requirements - does HomelabOS or Cloudron have the app you want?.
Both are very active projects and have made lots of improvements over the past few months, and I made the decision to go with Cloudron.