Mobilekit is a powerful mobile UI Kit template for any mobile websites and your pwa projects. Easy to use with components. Based on Bootstrap 5.
Mobilekit - PWA HTML Mobile UI Kit Template (bragherstudio.com)
Mobilekit - Bootstrap 5 Based HTML Template by Bragher | ThemeForest
Open-Source UI Toolkit to Create Your Own Mobile or Desktop Apps (ionicframework.com)
Bitter is a powerful HTML mobile template for any project, easy to use. Based on Bootstrap 5.
Bitter comes with components and pages you may need.