Starting with Black Highlighter 24.1, some versions of Apple’s operating systems (iOS/iPadOS 14.x and 15.x, and macOS 12.x) are considered to be under “legacy support”. This means:

As a trade-off to these concessions, users who are running on legacy-support versions of iOS get the features of Ultra Highlighter for free.

Black Highlighter development is a one-man operation, and this structure allows me to continue to serve as many people as I can, while still being able to move quickly to support new features as easily as possible. Thank you for your understanding.