Released as successor to Logic Pro 9 on July 16, 2013, Logic Pro X (10.0.0) included a new, single-window customizable interface, with a design in line with Final Cut Pro X. as well as new features. New tools in this release are "Drummer", a virtual session player that automatically plays along with your song in a wide variety of drumming styles and techniques, and "Flex Pitch", a Flex Time equivalent for pitch editing in audio recordings. Redesigned keyboards and synths were included, together with new stomp boxes, bass amp and drum kit designers, and a chord arpeggiator. A completely rebuilt sound and loop library was introduced, coming with a new Patch architecture. Also, Logic Pro X improves track organization, score edition, and exporting (now compatible with MusicXML format) and brings compatibility with MIDI plug-ins. Along with Logic Pro X was released a companion iPad app called Logic Remote, suitable for play and record digital instruments as well as navigate, make basic edits and mix Logic projects.