I had never heard of iReal before and just checked it out. Not as powerful as BiaB but at just £13.99 here in the UK was worth buying. As KeithR said, it costs an awful lot of money to keep up to date with BiaB, I am already close on £1000 and for almost 3 months it just does not work properly. While I do really love BiaB I am very disappointed that a fix is taking so long. I certainly will not be in a rush to upgrade to 2021 when it is released, as the saying goes Once bitten twice shy.
MacBook Pro 2020 - Big Sur 11.4
BiaB UltraPak+ 2021 Mac, (506) + pretty much everything extra.
Logic Pro X - 10.6.2