BIAS for iPhone iOS
BIAS for iPhone icon

BIAS for iPhone

by Positive Grid Inc

Universal App - Designed for both iPhone and iPad.

$19.99 > $4.99

App Description

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.

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

What's new in version 1.6.5

Hi there, Thanks for your feedback. On this new update of BIAS Amp now you are able to download the Amp Match presets from Tone Cloud directly into the BIAS GEAR. Also we improved the UI for a better user experience. Rock On, Team Positive Grid.

Rank in top paid apps

Ranking - Apps (iPhone) - United States
  • BIAS for iPhone is a good rated app with 4 stars.
  • The app is currently $4.99, instead of its regular price of $19.99.


  • $19.99 -> $4.99 May 17, 2017
  • $4.99 -> $19.99 Apr 17, 2017
  • $19.99 -> $4.99 Aug 16, 2016
  • $4.99 -> $19.99 Jul 26, 2016
  • $9.99 -> $4.99 May 20, 2016
  • Release v1.1.5 Feb 20, 2014
View All Activity »

App Details

Current Version: 1.6.5
File Size: 191Mb
Genre: Music
Publisher: Positive Grid Inc
Content Rating: 4+
Users Rating: 4.00 (1 reviews)

App Overview

The BIAS for iPhone app game is now available for $4.99 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 BIAS for iPhone and use it on your iPhone or iPad (See button below). You can find links to download the app here.

Developer site: Support

QR Code


Scan the QR code to download the app!

Send Me Price Drop Emails

Track this app for price drops.
Download on the App Store

BIAS for iPhone Has Add-Ons

  • $4.99


  • $4.99


  • $4.99


Note: Add-ons available as in-app purchases


  • AMAZING!!!

    Rated 5 out of 5
    By Oxbig, 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, 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...
  • Positively UPDATED UPGRADE!!

    Rated 5 out of 5
    By cjbluez, 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, November 27, 2016
    Delete the app and then reload; works fine.
  • Great, but flawed

    Rated 3 out of 5
    By polaris20, 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, 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, August 14, 2016
    Bias is a great app, and it produces amazing results. I pair mine with a Focusrite Scarlett 2i2, which fits...
Our Verdict: Average!

Similar Apps