iMazing for iPad. Backup and restore files wirelessly from iPad.
JotNot Scanner iOS. Scan music/documents and save as PDF. Has worked for years with very little problems.
Image Viewer MacOS – Nothing fancy. Just works and is fast!
Default Folder MacOS – Click to switch to a directory, save default folders for apps.
Stats MacOS – info in your menu bar.
Hazel MacOS – keep your desktop/folder clean.
unrealBook for iOS – I wrote it, but it’s reliable and great!
Read Rhythm iOS – practice reading rhythms!
MuseScore – Music notation.
ScreenFlick – Record your Mac screen with video and audio.
Paintbrush – Remember when you could just select areas and copy/paste/move them without layers and complications???? Here is a plain old bitmap editor that runs on M1!