Sorry, I meant indexeddb not localStorage, but yeah a cleanup would clear it as well. Mere supports data export/import though, and data loss hasn’t been much of an issue yet in practice.
The goal is to be able to back up and restore encrypted blobs to external storage (s3, Dropbox, etc) to mitigate this and enable sync across devices, but this isn’t implemented yet.
Mere is a PWA stores all of your records in localStorage in your browser, data is not stored on any server.