I rate this app a must have for musicians. I run every final mixdown I do on iOS through Remaster, using a preset I created utilizing their separate L/R EQ option, with complementary cuts and bumps on opposite sides to widen the mix prior to mastering. Its just so great for this. I also use the compressor for a little sonic glue for mixes that come directly from GarageBand. Very handy, use it all the time!