TRx Phone Recorder is described as 'TRx is a phone call recording program for Windows and Mac OS X. With TRx phone recording software you can manually record telephone calls, view caller ID information and put callers on-hold with on-hold music'. There are six alternatives to TRx Phone Recorder for Android, Symbian S60 and Windows Mobile. The best alternative is ACR Call Recorder, which is free. Other great apps like TRx Phone Recorder are Call Recorder - Total Recall (Paid), CallRecorder (Free), PCRemote Call Recorder (Free) and Record My Call (Free).
Another Call Recorder is a free call recorder application. ACR records phone calls. Although main purpose of ACR is to record incoming and outgoing phone calls, it has lots of features for free. See below features list and download the best call recorder in the Play Store.