Complete iOS Guitar Amps and Effects
- Hundreds of stunningly authentic amps and effects by Positive Grid
- LiveView turns your mobile device into a performance-ready processor
- Seamlessly open BIAS AMP models inside BIAS FX with one tap
- Download and share thousands of presets from ToneCloud™

BIAS FX Mobile turns your iOS device into an incredible sounding guitar amps and effects processor built on the backbone of our award-winning pro-level software. With an easy-to-use drag-and-drop interface, BIAS FX Mobile comes packed with a library of ultra-realistic boutique amps and a studio full of pro-level effects and the hottest guitar pedals.

The BIAS collection of advanced guitar hardware and software is built on the most robust amps-and-effects engine in the industry. BIAS FX Mobile works seamlessly with BIAS AMP 2 and BIAS Pedal apps to allow limitless customization of guitar amps and pedals.

Using its amazing AmpMatch™ Technology, BIAS AMP 2 allows you to match the tone of any guitar amp in a snap. You can then tweak to your heart’s delight – swap tubes, customize preamps, power amps, transformers and tone stacks with multi-mic capability and open/closed back cabinet options. You can open any BIAS AMP inside BIAS FX Mobile with one simple tap to take your favorite guitar setup with you anywhere!

With our penchant for perfection, BIAS FX is built on the backbone of our amazing, ultra-real BIAS AMP 2 tone engine. It’s a radically different approach to tone creation. We joined forces with the world’s top artists, engineers and recording studios to ensure our amplifier circuits are mind-blowingly authentic and best in class. The result? Plug in for an extraordinary playing experience with realistic touch response and ultra-responsive dynamics.

The BIAS FX universal app includes incredibly versatile, high-quality effects from vintage pedal simulations to newly added high-end rack effects. Mix, match and tweak to enter new sonic territory and create fantastic sounds never heard before. All effects are designed to work with BIAS FX’s easy-to-use, photo-realistic, drag and drop interface to dial in tone just like on analog studio gear.

The BIAS FX mobile app also allows users to connect to our ToneCloud, where players can find thousands of amps and effects configurations created by artists, producers and engineers from all over the world. You will never run out of inspiration, as the ToneCloud library grows daily. Settings can easily be downloaded and shared.

Key Features:
- Extremely intuitive operation
- Unrivaled, component-level simulation, analog-like sound quality
- Over 20 classic BIAS amps, import any amp models from BIAS AMP 2
- 81 high-quality effect pedals with brand new sound-processing algorithms
- 5 ultra-professional rack processors that sound like high-end analog gear
- 74 factory presets. Finding your tone is a no-brainer.
- Full integration with BIAS AMP 2 gives you unprecedented control over designing your own fully customized amps
- Dual signal path and dual amp processing
- Brand new splitter switches between and combines dual signal paths, adjusting the level and frequency range for each path to give you more tone-shaping possibilities
- LiveView mode lets you recall any preset with a single tap and toggle on/off any single effect or category of effects
- Pedalboard View shows all the effects and amps in the currently loaded preset at once
- Global Settings optimizes BIAS FX's output to sound the best in any environment—including sending to a mixer, amp head or combo or stack power amp—by letting you EQ and selectively deactivate the app's preamp, tone stack, power amp and cab separately for each destination.
- Full MIDI compatible
- Supports IAA (Inter App Audio) to expand your sound creativities.

Join us at, more is coming, we are just getting started!

What's New

Version 1.7.4

This update consists of the following changes:

- We now add a “RESTORE PURCHASE” function under the SPECIAL OFFER tab at the in-app Store Page. BIAS FX Mobile previous owner now can restore all the features and purchased IAP in a tap on a button.
- iOS Audio Interface tooltip and tutorial.

Bug Fixes:
- Fixed the crash issue with BIAS AMP 2 integration.

Rock On!
The Positive Grid Team

Ratings and Reviews

4.9 out of 5
81 Ratings
81 Ratings

Good, but...

... two problems:

1) inter app Audio doesn’t work;
2) i cannot use amps that i have previously created on Bias Amp 2. I only can tweak on the native Bias Fx amps.

But i have to agree: the best guitar plugin i have used so far !!!

Developer Response

Hi, thanks for the feedback. We are currently working on the inter-app audio issue.
Please write us on and we will provide more information and help there. Thank you!


Até agora o melhor som de plugins

Que conheço excelentes desde os pré amps,aos compressores e efeitos em perfeita harmonia.

Developer Response

Hi, thank you for the feedback! Cheers!


Great App, but the delays and reverbs need to be improved.

I've been used this app for both recording and live gigs. I have purchased all the expansion packs and tested everything.
It is an awesome app, however I believe that the delays and reverbs have still a long way to run until reach the same quality as the other effects. I really hope that the developers are working on that.

Developer Response

Hi there, thanks a lot for the feedback! Would you like to write us on and share more opinions with us? Your suggestions of improving the sound effects would be very important for us! Thank you!


Positive Grid Inc
699 MB
Requires iOS 10.0 or later. Compatible with iPhone, iPad and iPod touch.
English, Japanese
Age Rating
Rated 4+
© 2018 Positive Grid Inc
In-App Purchases
  1. Analog Effects Pack R$ 37,90
  2. Effect Powerhouse Pack R$ 37,90
  3. Classic Effects Pack R$ 37,90


  • Family Sharing

    Up to six family members will be able to use this app with Family Sharing enabled.

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