Recommend me some best Midi ROLL PIANO APPS.
Currently I am exploring "SEE MUSIC" https://www.visualmusicdesign.com/ "> https://www.visualmusicdesign.com/ https://www.visualmusicdesign.com/
"Music Animation Machine" MIDI Player https://www.musanim.com/Player/ https://www.musanim.com/Player/
Color Piano App https://colorpiano.app/ https://colorpiano.app/
and MuseScore 3 https://musescore.org/en/3.0 https://musescore.org/en/3.0
I have a project where I am uploading my finished MIDI soundtrack videos to Youtube. I am using MIDITrail. I like the options is has. I tried several others before deciding on this one. Musicanim that you linked above was going to be my choice before I found MIDITrail.
https://osdn.net/projects/miditrail/
Note that See Music, Musicanim, and MIDITrail are only for viewing previously created MIDI files, and do not allow you to edit files. If you are looking to edit with a piano roll rather than watch a playback, you'll need to explore other options.