Hi, I agree with you, PouchDB is an exiting technology. I had built an webapp (PWA) as a open-source side-project, using Vue+Vuetify+PouchDB, and it looks like to works well for single-user.
It is not finished, I have some ideas to gradualy improve it, like WYSIWYG, encrypting data, full-text search, notifications, ...
The demo/presentation is here : https://jimskapt.github.io/lambda-badger, and source is here : https://github.com/Jimskapt/lambda-badger