I have been using Avid Scorch on my Apple iPad for about ten years. As a user of Avid Sibelius for creating sheet music documents, Avid Scorch was an obvious solution for viewing them on my iPad. And unlike most iOS sheet music viewers, Avid Scorch allows for changing the key of a document.

Sadly, Avid Scorch has not been updated on iOS for several years. As of this writing:

• For Mac users on Apple Silicon M1 systems, only the latest version of Sibelius is supported by Avid (though older versions might work, through Rosetta, even if not supported)
• Documents created with the latest version of Avid Sibelius do not load in Avid Scorch
• Many (most? all?) MusicXML documents do not load in Avid Scorch

We are reaching the point where Avid Scorch is a nearly-dead legacy application. If you still have documents created with a sufficiently old version of Avid Sibelius, it continues to be as great as always (which, admittedly, was still a little buggy and lacking in features). But running newer versions of Sibelius, including running on the new standard M1 Apple platform, Avid Scorch is completely useless.