User have an assortment of options to pick from for their sound quality when recording such as 16-bit PCM, 8khz to 48 khz, stereo and multiple encoders (3gp, aac, mp3, wav/pcm).
Although recording directly to micro sd can trade off speed and cause audio jittering on old devices, its still a nice feature to have if one posseses a rapid micro sd card, and it sure is a trade off not to have it.
A feature rarely seen that can help if you wan't to "record your snoring" or just skip the no talking sections of a recorded speech, meeting or conversation.
Although some other simple recorders overlook this important feature, Smart Voice Recorder makes the effort to provide it which allows for user to adjust the gain to allow for better recording depending on their environment.
Although it provides acceptable quality, the app seems to often and for no apparent reason, jump the recording, skipping a few valuable moments of sound. This can be especially frustrating when recording music. To help avoid this, make sure you are recording on local device storage, and not on the external micro sd.
The free version will hamper you with a 3 minute limitation if you are recording with any other encoder than wav, (wav has no limit) all while displaying advertisements.
Stereo, mono, front mic, gain and user preset metadata for recordings makes for a lot of options available to the user in order to choose what best suits their needs at the time of recording.