Developer website: H-Pi Instruments
Custom Scale Editor is a free, full-featured tuning editor for Mac OSX and Windows which allows you to tune any MIDI key to any pitch using ratios, Hz values, decimals, constants and functions, code snippets, user definable algorithms, and more. Import Scala and .tun files, tune quick temperaments in a snap, quickly edit and and export tunings in a variety of popular tuning formats. The Pro license unlocks several features including Live Input, which allows you to retune output from sequencers and notation programs, as well as retune hardware and software synthesizers in real time.
Version 22.214.171.124.0: Release notes were unavailable when this listing was updated.
Mac OS X 10.4.11 or later