At long last, available at:

https://play.google.com/store/apps/details?id=com.mpaja.mbrailleandroid

And iOS + Windows to be found at

https://apps.apple.com/us/app/mbraille/id639199558

and

https://apps.microsoft.com/store/detail/9PC8Z5M4VNZ1?cid=DevShareMCLPCS

Best regards,

Harri