[yapcguy]

There's also Cloudant Sync based on CouchDB, which is also open-source and for both iOS and Android. https://cloudant.com/blog/introducing-cloudant-sync/

But how do we choose between CouchBase and CouchDB sync?

[tzm]

Here is more info on Cloudant Sync: https://cloudant.com/cloudant-sync-walk-thru