Unintuitive, didn't work I simply wanted an additional number to receive business calls on. After a good deal of hunting I found the option, acquired the number but on dialling it, it gave a continuous busy tone. Maybe I'm missing something - perhaps there's a delay on activation of the new number, or I've failed to activate the right "mode", however these are the things where I expect an app to inform you/hold your hand a bit. Overall really disappointing and doesn't do (easily) what it promises.
>> Performance improvements & bug fixes
Use Truecaller to identify unknown calls, and block spam calls and spam SMS.