Positive Grid has announced a limited-time offer which lets you download the full version of its Bias FX iOS app for free.

Bias FX Mobile is designed to turn your iPhone or iPad into a comprehensive guitar processor. Loading up the app, you’ll find a library of emulations – similar to the desktop version – spanning guitar and bass amps, effect pedals as well as studio racks.

The app has also taken live performances into consideration with its Live View controller, a mode which lets you manipulate effects in a tactile, synth-like fashion.

Bias FX Mobile can also be integrated with two other Positive Grid mobile apps – Bias Amp 2 and Bias pedal – for “limitless tone customisation”, as the brand claims. You can also tap into Positive Grid’s cross-platform ToneCloud platform for a collection of custom presets.

Where compatibility is concerned, Bias FX Mobile supports IAA, letting you pair the app with other iOS music applications. The app can also supports a variety of iOS music platforms, including AudioBus, Aum, GarageBand and Cubasis.

Outside of the limited free offer, these are the various pricing structures for the app:

Licenses:

• Starter: $9.99
• Essential: $19.99
• Ultimate License: $59.90

Amp and effect expansion packs (each retails at $9.99):

• Amp Arsenal Pack
• Essential Analog Effect Pack
• Classic From 60s Pack
• Effect Powerhouse Pack
• Studio Rack Pack
• Bass Pack
• Acoustic Pack
• Metal Signature Pack

Bias FX Mobile is currently available for free for an unspecified amount of time. Download it here.