BIAS for iPhone iOS
BIAS for iPhone icon

BIAS for iPhone

by Positive Grid Inc

Price: $19.99

BIAS is a professional amp designer, modeler and processor that gives you a stunning replications of 36 of the most sought -after vintage and modern amps in rock ‘n’ roll history .

Create totally new sounds by designing your custom dream amp swapping out the tubes, preamp, transformer, tone stacks, cab and mic; all from an easy to use interface designed for your iPad or iPhone. It doesn’t matter if you’re a classic rocker, metalhead, jazz player, bluesman or singer-songwriter, BIAS Head gives you exclusive tones in a heartbeat.

BIAS integrates seamlessly with Positive Grid's free JamUp XT and optional JamUp Pro XT guitar multi-effects apps, expanding BIAS into a powerful and completely unified professional guitar system for live use, recording and jamming.


• The most complete, accurate, and versatile amp modeling available in the world
• 36 amp models included with the introductory release
• Factory categories organize amps by music genre and sonic impact: clean, blues, twang, crunch, metal, acoustic and bass
• Fully customizable preamps, tone stacks, power amps, transformers, cabinets and mic selection and placement—mix and match!
• Customize the look and feel of your own amp panel, change name, tolex, panel and knobs.
• Works the way guitarists think: tweak gain and overdrive, swap out tubes and transformers, change the cabinet and mic position, and shape the tone with different tone stacks and two 8-band equalizers
• Create a virtually unlimited number of custom amps
• Quick preset to recall each of your 8 favorite settings in turn with just one tap
• Seamless integration with JamUp XT and JamUp Pro XT, open and save your amp models inside JamUp with one tap
• Works with GarageBand and other audio apps via Inter-App Audio and Audiobus.

For iPhone7 users: you need a lightning interface with output to use this Positive Grid's app. For more information, please visit

Also check out BIAS Desktop (AAX/RTAS/VST/AU) at:
Twitter: @PositiveGrid

BIAS for iPhone App Details & Overview

BIAS for iPhone is an application developed by Positive Grid Inc and released on iOS. The app is compatible with iOS 9.0 or later on the following devices: iPhone 7, iPhone 6, iPad 3, iPad Mini and iPod Touch 5G or newer.

Download the BIAS for iPhone app and use on your iPhone or iPad. Click here to download the app for Android or Windows devices.

Developer site: Support

What's new in version 1.6.6

Hi there, In this update, we are fully compatible with Audiobus 3. Rock on, Team Positive Grid

Rank in top paid apps

Ranking - Apps (iPhone) - United States
  • BIAS for iPhone is a good rated app with 3.5 stars.

App Updates (View More)

  • $4.99 -> $19.99 Aug 4, 2017
  • $19.99 -> $4.99 Jun 24, 2017
  • $4.99 -> $19.99 Jun 2, 2017
  • $19.99 -> $4.99 May 17, 2017
  • $4.99 -> $19.99 Apr 17, 2017
  • Release v1.1.5 Feb 20, 2014

App Data

Current Version: 1.6.6
File Size: 193Mb
Genre: Music
Publisher: Positive Grid Inc
Content Rating: 4+
Users Rating: 3.50 (79 reviews)
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BIAS for iPhone App Add-Ons

  • $4.99


  • $4.99


  • $4.99


Note: Add-ons available as in-app purchases

BIAS for iPhone Reviews


Rated 5 out of 5
By Oxbig on February 17, 2017
I'm kinda old school, and little behind the times and technology, but when I came across Bias Amp/FX in...

Great app

Rated 4 out of 5
By PimpSlickBack on December 30, 2016
It's a pretty good amp sounds pretty good too. I recommend hat you buy jam up pro to because it's...


Rated 5 out of 5
By cjbluez on December 4, 2016
I was so glad when "Ben" from P.G. Emailed me about this new upgrade but honestly a little skeptical (...

Bias update crash fix

Rated 4 out of 5
By Verminator333 on November 27, 2016
Delete the app and then reload; works fine.

Great, but flawed

Rated 3 out of 5
By polaris20 on September 6, 2016
This is kind of a blanket review for the iOS versions and the desktop version. They all sound great, and...

Love it, wish for ir and fx

Rated 4 out of 5
By nordical on September 2, 2016
Excellent app, sounds great and fun to use. I just wish it could load ir files like the desktop version....

Great for on the go musicians

Rated 5 out of 5
By Ctullu on August 14, 2016
Bias is a great app, and it produces amazing results. I pair mine with a Focusrite Scarlett 2i2, which fits...

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