Harmonicdog has updated MultiTrack DAW for iOS to version 4.

MultiTrack DAW is an 8-track audio recorder for iOS (upgradable to 24 tracks) that supports Inter-App Audio, Audiobus and more.

Here’s what’s new in version 4:

• Freeze tracks – drastically reduces processing for tracks with IAA effects, and frees up the plugins for use on other tracks.
• Loop Recording – allows continuous overwriting while it loops. Stop and undo after a good take.
• Smaller audio buffers – sizes of 64 are now supported for low latency monitoring.
• Rewritten audio engine for perfectly clean audio quality.
• Volume/pan adjustments are filtered and interpolated, no ‘zippering’.
• Compressor uses exponential gain reduction metering.
• Long-Touch zipped song project icon now has ‘Open in’ button for sharing the zip.
• Final mixdown now uses loop markers as song start and end.
• Final mixdown won’t overwrite older mixdowns with same name.
• All sorting/ordering uses numeric sort (Song, Shared, Inputs, IAA effects, generators, instruments).
• Silence rendered to IAA plugins when doing mixdown/copy operation, to flush out buffers.
• Wi-Fi web server lists songs in same order as shown in multitrack.
• Track and bin download filenames now contain the song name as prefix.
• Various bug fixes

MultiTrack DAW is available for US $9.99 in the App Store.