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The move towards the cloud and towards low powered mobile devices has led to a decline of rich clients, i.e. most apps today are heavily dependent on their home server and thus a stable Internet connection. There are some approaches for local caching of data, however the concrete synchronization mechanism is often intransparent or difficult to control for users. Developers usually need to use different data structures on mobile devices and their cloud servers, thus leading to a multiplication of the code base involved. Meanwhile mobile chip architectures have caught up in performance such that the heavy reliance on the server has become more and more questionable. As an answer to this discrepancy, the Cloud Innovation Team of ATEGRA AG has been developing a fully distributed PaaS called Protogrid. It is based on CouchDB Servers located in the cloud, on premise and even running directly on mobile devices. The Protogrid development environment supports Rapid Application Development, such that a workflow application can be created and deployed offhandedly in a few minutes. Since all client logic is completely independent of the database schema, adaption to new requirements during operation is no issue. All Protogrid Apps can be deployed on various platforms without any additional effort and they are usable offline with no loss of functionality. In particular, this talk will cover experiences and earned knowledge during the implementation of Couchbase Lite and CouchDB replication on mobile clients as well as our innovative approach regarding the database schema in a NoSQL context.