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, user, and our own Positive Grid team. It’s designed to work seamlessly with BIAS Amp to create your ultimate guitar amp. 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 dramatically improved sonic performance over other 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
● Six amps and 16 premium effects
● Additional 48 amp channels and 40 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 3.6.35

Hi there,

This latest release brings the following changes:

- Refined the Restore Purchase process for improved stability.
- Fixed the crash issue that occurs when an invalid AirTurn event is received.

Rock On!
The Positive Grid Team

Ratings and Reviews

4.6 out of 5
307 Ratings
307 Ratings
Endless Nameless ,

Perfect Setup

This app is an all-in-one app, that surprised me a LOT! I'm using an iRig HD and this, and a homemade BT pedal, for switching pedals or presets. This is pretty much all you'll ever need, playing guitar in a fast and portable fashion. Every single effect is perfect, and the option to place them in any order, gives you the ability to create any tone you can think of. You do get what you pay for, on this app. If you're only using the free stuff, then you're gonna be limited as to how good it can sound. Trust me, buying the in-app upgrades will be money well spent. You're going to need an interface, of course, and a Bluetooth foot-switch controller, to be able to change setups while playing. This JamUp app works with airturn or MIDI control pedals. You could even rig a keyboard, with foot-switches, and use switch control, in iOS settings.


Developer Response ,

Hi, thanks again for the tremendous feedback! :D That's no doubt an ultimate thrilling comment we can get and we are really glad that you enjoy a lot with our stuff! Cheers!

marineshred ,

Just not it...

I’m really disappointed in this app, bias amp 2, and bias fx. Even though the apps are made to be used together, the purchases don’t transfer over. Just when you think you got what you need, you have to buy it all over again. Also the three programs each have a specifically coordinated weakness, so you pretty much have to buy all three. This is very smart marketing, but a dirty way to nickel and dime the customers. The channel switching is super slow and loud. I wouldn’t use it in the dingiest club.

Don’t get me wrong, the flexibility is awesome. You have 3 millions ways to make a 5150 sound like crap and one or two to make it sound good. We pretty much all knew that.

I was looking to lighten my load with this technology, but I’m right back to big amps-And I am totally happy with it. I wish I never blew money on this setup.

Developer Response ,

Hi, thanks for the feedback. Please write us on and tell us more about your thoughts.

enos_u_dipstick ,

Needs way more presets

Out of the box this comes with just a few presets, most of which just aren't very good or useful. If you really enjoy endless tinkering and tweaking of pedals, amps, and chain then you'd probably like this app. I'd much rather have a really robust set of presets to choose from, created by pros who know what they're doing. I feel lost trying to this with this app.

There's a reason why users of guitar amp sim software are flocking to Tonebridge - it's because they just want to choose a sound and go.

Developer Response ,

Hi, thanks for the feedback. Please write us on and tell us more about your thoughts!


Positive Grid Inc
323.1 MB
Requires iOS 9.0 or later. Compatible with iPhone, iPad, and iPod touch.
English, Japanese
Age Rating
Rated 4+
© 2016 Positive Grid Inc
In-App Purchases
  1. Metal Expansion Pack $4.99
  2. All Access $11.99
  3. Effect Expansion Pack $4.99


  • Family Sharing

    With Family Sharing set up, up to six family members can use this app.

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