Useful tool to quickly play/mock/utilize RMQ's grid maintained by Infinite Red, a web and mobile development company based in Portland, OR and San Francisco, CA.
Enjoy use of it on the Github Page here: http://infinitered.github.io/rmq_grid/
Click and drag on the grid to build your frames.
Click non-grid frame to delete.
RMQ and rmq_grid, as open source projects, are free to use and always will be. Infinite Red offers premium RMQ and rmq_grid support and general mobile app design/development services. Email us at hello@infinite.red to get in touch with us for more details.