Spark: Chords, Backing Tracks

Spark: Chords, Backing Tracks

The Smartest Practice Amp

25K ratings
582 reviews
Free
In-App Purchases

Details

  • Released
  • Updated
  • January 29, 2020
  • July 1, 2026

Features

Spark: Chords, Backing Tracks screenshot #1 for iPhone
Spark: Chords, Backing Tracks screenshot #2 for iPhone
Spark: Chords, Backing Tracks screenshot #3 for iPhone
Spark: Chords, Backing Tracks screenshot #4 for iPhone
Spark: Chords, Backing Tracks screenshot #5 for iPhone
Spark: Chords, Backing Tracks screenshot #6 for iPhone
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About

This intelligent amp and app combination creates a virtual band that learns your playing style to generate accompanying bass and drums. Access millions of songs with auto-displayed chords, over 10,000 tones, and voice command functionality. It's designed to enhance your practice and performance experience.

Auto chord display for millions of songs
Smart Jam with AI-generated bass and drums
Voice command control
BIAS tone engine with 10,000+ presets
Tempo control and looping for practice
Realistic virtual tube amps and effects
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What users say

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What's New in Spark

4.5.3

July 1, 2026

What's New in 4.5.3 Stability • Fixed an issue that could freeze the app after connecting to your Spark amp • Fixed a crash when restoring presets from Dropbox • Fixed getting stuck on the connection screen with certain amps • Various other bug fixes and performance improvements ToneCloud • The Like button now works as expected • You're now prompted to sign in when using Like, Preview, or Download actions on a preset Groove Looper • Corrected Shuffle count-in and drum-track timing

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5

In-App Purchases

$19.99

Experience Jimi Hendrix™

Experience Jimi Hendrix™ for Spark

User reviews

It’s Okay?

I’m sure at one time this app was cutting edge. However, it has started to decay. Features that I’m sure were once popular are starting to break. Will it be updated before rigor mortis sets in?

Prime example, there is only one in app purchase, Experience Jimi Hendrix. It is displayed right across the top of the screen. It is unavailable for purchase. The content has expired.

I’m sure for advanced users who only use this for tones are happy. Those function well. For the use of learning new songs, this is straight up clunky. Designing new tones with AI is greeted with the experience of the keyboard overlaying the navigation buttons. You are forced to decide if the tones you have are good enough, or if it is necessary to use the AI, then force quit the app and go through repairing.

The saved song list (just one list, no option for playlists, unless you’re an Apple Music subscriber) has no customization and no search. If you saved more than a few songs, you will be forced to scroll through your entire list in the reverse order of which you added it. You will also be subject to looking for the title of whatever the person who uploaded it to YouTube named it.

The app is still usable, but letting it rot makes me mindful that my physical amp is only good for as long as this software is maintained. I like the product, but it makes me question if I should continue to invest in Positive Grid gear, or if my money would be better spent buying a dump amp and fancy pedals. Having easily customizable tones is cool. The amp is great. As far as using the app for anything but guitar tones, you would be better off getting a $20 annual Ultimate Guitar subscription.
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Lots of bugs

The app constantly tells me to connect my Bluetooth audio even though it is connected so some of the features never work.

It always says to register my device even though I’ve done it sever times.

Connecting my spark control is a whole process every time. It never just connects, I have to hold down the button on the device.

Great sounds but connectivity is really poor
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Needs a lot of work, but it´s good for experiment

I need to organize my presets in collections (folder structure) change the order of presets, create own categories, delete categories. I donˋt want to see all created presets arranged in a single list. For example, if I decide to make a project album, I would create a collection folder for that specific album project. These collections can exists in a separate tab, showing your custom projects albums. The app is not made for advanced users, but is a good starting point for just practice, not serious project or album solo creation. All the other features are good, AI is good, chords are good, amp modeling is very good. You can create a very well tones for any guitar. The only thing is, I cannot create custom collections or folders, or re order presets as I would like to.
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Maybe the worst app ever

This might be the first app ever made. And there are thousands upon thousands of apps out there. The amp is great. But the app is the wrist piece of software ever coded by human (or even AI) hands. Utterly non-intuitive, it seems designed to confound, perplex, and flummox. It’s almost as if a team of trolls got together and said: what can we do to create the most frustrating user experience ever devised. And then they did it.
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Amazing upgrades

Great AI amp modeling. Spot on. My only complaint is that it’s hard to get to amp library and edit. Also have to close the app to exit AI amp creator.

Developer apps

User experience

🐞

Reported Bugs

5 issues

App frequently disconnects from amp

Bug

Tone selection issues and inconsistencies

Bug

Sudden loud noises or feedback from amp

Bug

Firmware update process is cumbersome

Bug

Spotify integration not working as advertised

Bug

Requested Features

6 requests

Add looping functionality

Feature

Improve auto-chord detection and playback

Feature

Allow more customization of signal chain and effects

Feature

Integrate with more music services beyond Spotify

Feature

Add EQ controls for Bluetooth speaker mode

Feature

Sync saved tones across devices

Feature

FAQ

What does the Spark app do?

The Spark app works with the Spark amp to provide an intelligent practice experience. It can automatically display chords for millions of songs, generate realistic bass and drum accompaniments that learn your playing style, and offers voice command control for easy operation. It also provides access to a vast library of guitar tones and effects.

What are the key features of the Spark app?

Key features include Auto Chords that display chords in real-time for any song, Smart Jam which creates a virtual band to play along with you, Voice Command for hands-free operation, and a powerful Tone Engine powered by BIAS, offering over 10,000 presets of amp and effects.

How much does the Spark app cost?

The app itself is free to download and use, but it requires the Spark Amp hardware to function. The app offers in-app purchases, likely for additional tones or features, as indicated by its monetization model.

What devices is the Spark app compatible with?

While specific device compatibility isn't detailed, the app is designed to work with the Spark Amp. Users should ensure their mobile device meets the minimum operating system requirements for the app, which are typically found on the app store listing.

Who is the Spark app designed for?

This app is ideal for guitarists and bassists of all levels who want to enhance their practice sessions. It's particularly useful for those who want to learn songs faster with auto chords, play along with a virtual band, or explore a wide range of professional guitar tones and effects.