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 3.6.40

Hi there,
In this update, we fixed several minor issues to maintain our reliability. Thanks for your support!

Rock on,
The Positive Grid Team

Ratings and Reviews

4.7 out of 5
35 Ratings

35 Ratings

Ryza1975 ,

Blown Away!

Very rare that I bother to write a review - this is definitely worthy of one though. I wish I'd found this app before I wasted money on the countless other ones I've bought. I'm playing a Les Paul Studio through an irig and it sounds fantastic. Other than GarageBand, this is the only guitar app that I can happily play with for any length of time without getting sick of terrible tone. Best amps and effects by far. Presets are all usable and diverse sounding. And so many extras that are lacking in the others - tuner and a metronome that plays in the background, option to jam along to any of your iTunes music, free downloadable user presets and a recorder...can't ask for anything more. Plus it's universal rather than having to pay for the same thing twice like Amplitube. Can't rate it enough, probably won't use any of the others again. Big A + from me.

Grumpyoldbastard ,

Close, but needs tweaking

I mainly use jamup as a song learning tool. To get five stars, it needs:
1) fine pitch tuning. 1/2 steps are too big
2) the 'loop' button is far too small and way too close to the surrounding 'buttons'.
3) the play head keeps retuning to the beginning when i restart after manually moving the 'play head'

audio action ,

jamup pro is ridiculous!

I've been a valve amp man for many many moons now. owning the best I could buy, Mesa mark v, roadster, Marshall el35 with rack gear, fender bassman...list goes on. I never really had faith that digital software could simulate or even come close to what a real amp sounds like. . . but know i have faith. this app is amazing and convincing. tone future is here. honestly, I have not plugged into my Mesa's or Marshalls for months now. I'm addicted to this app. it's the all in one guitarists happy place. get some good powered monitors plug in and get face melting!


Positive Grid Inc
321.2 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. Reverse $4.49
  2. Multi Head $4.49
  3. Echo Delay $4.49


  • Family Sharing

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

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