Audiobus: Use your music apps together.
What is Audiobus? — Audiobus is an award-winning music app for iPhone and iPad which lets you use your other music apps together. Chain effects on your favourite synth, run the output of apps or Audio Units into an app like GarageBand or Loopy, or select a different audio interface output for each app. Route MIDI between apps — drive a synth from a MIDI sequencer, or add an arpeggiator to your MIDI keyboard — or sync with your external MIDI gear. And control your entire setup from a MIDI controller.Download on the App Store
Audiobus is the app that makes the rest of your setup better.
Mastering with BarkFilter and MagicDeathEyeStereo
BarkFilter → Compressor → Limiter
(“MagicDeathEyeStereo” compressor and “NoLimits” limiter are my favorites)
Open the Tripleband preset.
Switch OFF “Auto Gain”.
Select the “Threshold” tab.
Unlink ALL of the bands.
Save your preset. (I call it AllBand)
Now for the magic:
In Barkfilter’s “Threshold” tab, raise the first two bands as much as you like.
Save presets at various levels so that you can switch between them and compare.
Have fun and also remember to save your unmastered songs for future experiments.
Here are some UNIVERSAL apps that are great for audio mastering: