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
308 Ratings
308 Ratings
mavisxp ,

iPhone X? Xs?

Hey guys. You know the iPhone X, that's now been on the market for MORE THAN A YEAR???? Yeah. Would be absolutely FANTASTIC if you'd get around to supporting it.

Developer Response ,

Hi, thanks for the feedback. Please write us on and we will provide more information and help there.

Klightx15 ,

You screwed me over

You guys did me so dirty. I purchased the full app a long time ago and was able to record using the full 8 track mixer. I had audio files recorded and saved. I launch the app today for the first time in a while to reminisce on some old material to tell me I have to purchase the expansion pack. I tried restoring purchases and nothing. I tried loading my old recordings and they were all gone. You lost my trust. Stay away from this bogus app. Greedy company. I will never purchase another product from you.

Developer Response ,

Hi, thanks for the feedback. Please write us on and we will make sure to provide more information and help there. We will also figure out a way to save your songs. Thank you.

Edits pix ,


I was using your app for about 6mnths with my bass guitar, then it started distorting. I got a new phone, and the app still is not working properly for bass guitar. I’ve checked all levels on sound board I’m running it through, checking all levels on the app to make sure I’m not clipping, and it’s still playing distorted. Hoping the issue gets resolved soon. I was really enjoying the app until it stopped working right for me

Developer Response ,

Hi, thanks for the feedback. Please write us on and we will provide more information and help there.


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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