JamUp is the #1 multi-effects processor for guitar and bass. Available for iPad and iPhone, JamUp gives you instant access to a ToneCloud® sharing community with over 10,000 presets from artists, users, and our own Positive Grid team. It’s designed to work seamlessly with BIAS Amp to create your ultimate guitar amp, and with more than 3 million users worldwide, JamUp has been featured in Macworld, Premier Guitar, Guitar World, Guitar Player and more.

The original JamUp comes equipped with one amp and six effects. JamUp Pro gives you the power of six amps and 16 premium rack and stomp-box effects, including distortion, compression, tape delay, tremolo, and spring reverb. Both JamUp and JamUp Pro include Jam Player, phase sampler, tone sharing, preset manager, optional 8-track recorder, live view, tuner, and metronome.

With its easy-to-use drag-and-drop interface, JamUp enables you to arrange a studio-quality collection of amps and effects models into your own custom signal chain. Get the optional expansion packs for access to a mind-boggling 52 amp channels and 50 classic effects.

Each amp model has been developed using Positive Grid’s MESH multi-stage modeling technology, and has been meticulously measured and analyzed against actual hardware. With its dead-on accuracy and tube-like touch and feel JamUp delivers vastly-improved sonic performance over other mobile digital amp modelers.

Import songs from your iTunes library to jam along with using the Jam Player module. Adjust the tempo and pitch with the high-fidelity time-stretching engine. Easily record and layer looped parts with the sound-on-sound phrase sampler. With the built-in tuner and metronome, and optional 8-track recorder, JamUp delivers a complete, professional processing and recording solution.

Join our worldwide community with JamUp’s ToneCloud® connectivity. Create, share, and download custom presets right inside JamUp. Check out presets from top artists, staff picks, or user-created tones from all over the world.
JamUp now seamlessly integrates with Positive Grid’s BIAS Amp app, instantly expanding JamUp into a powerful and completely unified professional guitar system for live performance, recording, and jamming.

●  Real-time guitar/bass amp and multi-effects processor 

●  Seamless integration with BIAS Amp 

●  Simultaneously run seven amp and effects models 

●  Drag-and-drop signal path for easy tone creation 

●  One amp and six effects 

●  Additional 52 amp channels and 50 effect models (via in-app purchase expansion packs) 

●  Complete 8-track recorder system (via in-app purchase) 

●  Phrase sampler with undo feature, start module selection, and synchronized metronome 

●  Access to your iTunes library with time stretching (pitch/speed) engine via Jam Player 

●  Tone sharing, allowing you to download over 10,000 artist and user presets or share 
your own 

●  128 slot preset manager 

●  Live view control page 

●  Built-in tuner/metronome 

●  MIDI learning and assignment 

●  Audio copy/paste
●  Audiobus support in 3 slots
●  And much more!

For iPhone 7 users: You will need a Lightning interface with an output to use this Positive Grid app. For more information, please visit:

For more information, please visit:
Twitter: @PositiveGrid

What's New

Version 3.6.33

Hi there,

This latest update improves the sound of the Phase Tube for Blues/Insane Poweramp importing from BIAS AMP 2.

Rock On!
The Positive Grid Team

Ratings and Reviews

4.7 out of 5

35 Ratings

35 Ratings

Jam App noteworthy on its own

Blues Man Dave

Acquired the free version to play around with - I'm not a big fan of amp modelling etc but having your iPhone work as a nice little headphone amp - well that sounded ok. What blew me away was the Jam section which has the facility to slow down any recording so you can figure out what is going on. I have used similar tools on the PC but by comparison this is easy and very effective for practice purposes. Loop capability as well so an ideal learning tool.

Latency is a bit of an issue for me on the amp modelling side of things - you really do need to use the lowest latency setting if at all possible and "digital" noise can also be an issue (I'm using an iRig input btw). Unlike others though I would not be complaining price wise as I know the sort of work that goes into creating software and pretty much all the iPhone Apps rate as a bargain (check out the price for Microsoft Office 2010)!

The built in tuner is also one of the best ( I was alrady using this as a separate app).

Excellent app


I've just installed this app and played around with it for a couple of hours and think it's amazing for the price - nothing beats free! I've been using it with a Fender Telecaster and Gibson Les Paul into an iRig and out through a Roland amp. It easily beats Garage Band which for me is always accompanied by a lot of annoying hiss? This app does none of that and give a very clean manageable sound. All the controls are easy to use and you get a very good choice for free. Once of had a bit longer on this version I'll definitely be updating to the paid version which looks like a fantastic deal too! Keep up the good work.

Best guitar app


If you play guitar and have an ipad then you want this app. You may not know you want it yet, which is why you're reading reviews and wondering if its better than the competition. There IS no competition in terms of value for money and tonal quality to this app. Pro's - you get a truckload of the most coveted amps and pedals in the world for the cost of a round of drinks. Cons - none. Improvements - better import options with other apps for backing tracks and in-app file sharing between sampler and 8 track recorder would be nice.


Positive Grid Inc
321.5 MB
Requires iOS 9.0 or later. Compatible with iPhone, iPad and iPod touch.
English, Japanese
Age Rating
Rated 4+
© 2015 Positive Grid Inc
In-App Purchases
  1. JamUp Pro Upgrade £19.99
  2. 8-Track Recorder £4.99
  3. Metal Expansion Pack £9.99


  • Family Sharing

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

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