Bazaar: New App Store for Gnome (github.com)

Been trying it out for the last month. Like how speedy downloads are and slightly better app discovery. Wish it could have native package downloads/system updating. However, I wouldn’t use it as my sole “Linux software app”. Regardless love that it exists and continue to follow

It might be useful for new Linux users but I wouldn't call it an "app store" since it works with flatpak only.

Btw, there's Warehouse if you need some advanced features and you prefer working with GUI - https://github.com/flattool/warehouse