Re: How to merge one QlikSence application into one?
Maybe 2 options :
As you do not have so many sheets : just copy objects with copy paste from one app to the other (Ctrl + C and Ctrl +V works even on web browser ! ).
Another option, (but never tried) : would be to publish the first app, then with Qmc utilities Qlik Sense - QMC Utilities, put all sheets as community sheets on this app, and then publish the second app as "replace the first published app". And finally with QMC utilities put the community sheets as base sheets. End.