(PouchDB contributor here.) Just a quick note that slow replication is one of the things that is largely fixed in CouchDB 2.0 thanks to the new _bulk_get API (h

(PouchDB contributor here.) Just a quick note that slow replication is one of the things that is largely fixed in CouchDB 2.0 thanks to the new _bulk_get API (https://issues.apache.org/jira/browse/COUCHDB-2310 https://issues.apache.org/jira/browse/COUCHDB-2310) and is set to get even better in CouchDB 3.0 once it has HTTP 2. As for your app feeling sluggish, my hunch is that you're seeing this in a Chromium or Gecko browser (e.g. Android WebView) in which cases IndexedDB does quite a lot of heavy operations on the UI thread (http://nolanlawson.com/2015/09/29/indexeddb-websql-localstorage-what-blocks-the-dom/ http://nolanlawson.com/2015/09/29/indexeddb-websql-localstor...), which can be mitigated by moving it to a Web Worker (as Pokedex.org does) or a Service Worker (as HospitalRun.io does).