Check the RSA Software Token Admin guide for <device>. It will indicate if the app supports more than one token. For example Andriod 2.0 can load 10:
Support for multiple tokens.The RSA SecurID app supports importing up to 10
software tokens to each Android device.An RSA Authentication Manager server
can provision three software tokens to an individual user. RSA SecurID software
tokens can be provisioned to the same device by different companies.
Token 2.0 for IOS can also do 10.