There was a post about this app needing more click. For the KingB organ, there are adjustments for both Key Click and Leakage under Settings (symbol that is a sprocket wheel) > Organ
Also B-3X has not been on sale for iOS since Nov 21, 2022 according to Appsliced. It was $39.99 for 1 week. Since then Nov. 29, 2022., it has been $129.99.
The desktop version has been on sale many times but IK Multimedia have lowered the regular price to $99.99.
The iOS version must generate a big source of income for them at the $129.99 price. I bought the desktop version on sale for $39.99 last Xmas but since I don't play live, it is fine for my use. If the iOS version ever goes on sale again, I may pick it up.
https://appsliced.co/app?n=hammond-b-3x