When you press a key on the keyboard it shows briefly the key ON but it disappeared as soon as you release the key and the only data that gets registerded y the history is the Note OFF. Also if you repeatedly press the same key you only get one event registered, so there is no way of knowing how many times you pressed the key. This does not happen with other Midi Monitors.....
Developer Response
Bonanote52, before leaving a 3 star review on an application that you didn't pay anything for, please do some research to see if you might not be misunderstanding something or projecting your own expectations on something that is not designed to meet them.
What you describe is exactly what makes ShowMIDI different, from the App Store description:
"Instead of wading through logs of MIDI messages to correlate relevant ones and identify what is happening, ShowMIDI visualizes the current activity and auto-hides what you don't care about anymore. It provides you with a real-time glanceable view of all MIDI activity on your computer.
ShowMIDI is designed to be always on, using the spacebar or play/pause button you can pause the flow and focus on a data snapshot with the latest state of any MIDI entity."
If you want to wade through logs of MIDI messages, there's plenty of tools that do that, ShowMIDI offers a different approach for when you don't need that. This is why many websites have praised ShowMIDI's approach, like CDM: https://cdm.link/2023/11/showmidi-is-the-free-midi-visualization-utility-youve-been-waiting-for/
I would appreciate it if you would remove your review or adapt the star rating, what you did here is extremely bad form. It's very easy to contact me, you could just have asked a question instead: https://github.com/gbevin/ShowMIDI