Any additional app created by Steinberg would also cost money.
Optical Music Recognition is a hugely complicated area of software – even the major players that have been doing it for years can’t do it perfectly. That’s not where the Dorico team’s expertise lies.
Even if they were to stop all work on Dorico and concentrate on OMR for a while, it’s unlikely that they would do it on Android. Daniel has previously said that they are not going to port Dorico to Android, for various technical, commercial and other reasons.
I am very happy with PlayScore 2 as a companion app to Dorico. It processes and converts scans and notation files to music.xml which I can then import into Dorico.