Comparison

MOJOcontrol vs Quartet 4

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

MOJOcontrol

Features
Read full description

The MojoControl app for Apple iPad allows you to take control of the system mixer. You can set and customize each channel, adjust the curve with the parametric equalizer, choose the type of effect and record scenes.

About

Quartet 4

Practice and perform jazz standards with high-quality backing tracks. Mute your instrument, change keys, adjust tempo, and loop sections for focused practice. Features animated chord diagrams and royalty-free multitrack exports for further creative use.

Highlights
  • Live jazz backing tracks
  • Mute your instrument
  • Change key and tempo
  • Looping for practice
  • Animated chord diagrams
  • Multitrack export
  • Playlist creation
Features
Read full description

Practice and perform jazz standards on another level with Quartet. And with a host of brand-new features, the top-selling jazz play along apps just got even better. No subscriptions. No in-app purchases. Volume 4 includes another 100 stunning jazz standards recorded exclusively by 6 of the world’s best jazz musicians. All ‘live’ studio recordings with intros, endings and top line solos. Whether you play jazz piano, guitar, saxophone, trumpet, bass, drums…simply mute your instrument from the Quartet for the ultimate jazz play along. And for jazz singers too, each edition of Quartet is an unrivalled collection of jazz backing tracks powerful enough to gig with. Change key on the fly. Speed up or slow down the audio seamlessly. Loop sections and slow them right down for practice. Select the number of repeats. Choose from preset mixes or create your own custom mix using the new onboard mixer. Arrange each song exactly the way you want it with the new automated ‘Arranger’ feature. Add a touch of reverb and you’re good to go. Improve your skills with full screen animated chord diagrams for Piano, Guitar and Ukulele. Search the entire Quartet song library (700 songs) by composer, style, BPM, associated artist and more. Build and share multi-app playlists and easily export PDF chord charts for every song. Export your stereo mix or export the multitrack if you want to develop the high quality separated parts in GarageBand or whatever DAW you use. Either way, all recordings are offered to you royalty-free giving you endless creative possibilities. The 100 jazz standards in Quartet Volume 4 include improvisations in the style of… ‘Affirmation’, ‘Água de Beber’, ‘Alexander’s Ragtime Band’, ‘Blue in Green’, ‘Born to Be Blue’, ‘Cinema Paradiso’, ‘Chicken’, ‘Ev’ry Time We Say Goodbye’, ‘Feel Like Makin’ Love’, ‘Got a Match?’, ‘Here There and Everywhere’, ‘I Get a Kick out of You’, ‘It Ain’t Necessarily So’, ‘La Fiesta’, ‘Manhattan’, ‘Nothing Personal’, ‘Poinciana’, ‘Save Your Love for Me’, ‘Social Call’, ‘Surrey with the Fringe on Top’… and 80 more. Install Quartet on all of your iOS devices plus your Mac devices (M series only) at no extra cost. Ready to take your jazz standards to another level? Hear more at www.quartetapp.com Featured artists on Quartet Volume 4 Guitar Nigel Price Nigel has recorded with many big-name artists, performing on over 50 albums, most recently Van Morrison’s studio album ‘Keep Me Singing’. A former member of The James Taylor Quartet, Nigel was voted the UK’s ‘Best Guitarist’ in the 2016 British Jazz Awards and is “…probably the most dynamic and gifted guitarist on the British jazz scene today” [All About Jazz]. Trumpet Steve Fishwick Steve has performed and recorded with many leading European jazz musicians including Sir John Dankworth, George Mraz, Dado Moroni, Claus Raibler, Tony Lakatos and the WDR big band. In the USA, Steve has performed and recorded with Anita O' Day, Ron Carter, Jimmy Heath, Peter Erskine, Eric Harland, Scott Hamilton, Herb Geller Saxophones and Flutes Andy Panayi Credits include Shirley Bassey, Jessye Norman, Paul McCartney, Seth MacFarlane, Elaine Paige, Elvis Costello, Georgie Fame, Helen Shapiro, Madeline Bell, Patty Austin, Freddie Hubbard, Wynton Marsalis, Billy Cobham Piano Graham Harvey Credits include Incognito (MD), Stacey Kent, George Benson, M People, Hamish Stuart, The Jones Girls, Philip Bailey, Chaka Khan, The BBC Big Band, Madeline Bell, Jocelyn Brown, Mica Paris, Sir Cliff Richard Bass Geoff Gascoyne Credits include Jamie Cullum (MD), Sting, Van Morrison, Bill Bruford, Mari Wilson, Paloma Faith, Georgie Fame, Gloria Estefan, Guy Barker, Charlie Watts, Benny Golson, Jacqui Dankworth, John Martyn, Eartha Kitt Drums Sebastiaan de Krom Credits include Herbie Hancock, John Scofield, Phil Woods, Dave Holland, Jamie Cullum, Guy Barker, Wynton Marsalis

Screenshots

Quartet 44 screens

Verdict

The call

The clearest difference is price: MOJOcontrol at Free against Quartet 4's $16.99. MOJOcontrol also leads on in-app purchases (none vs 5) and iOS requirement (10.0 vs 16.6). Quartet 4's advantage is update cadence (monthly vs every 56 months). On ads and device support there is nothing between them.

Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS

CostPrice · In-app purchases · Ads · Monetization

MOJOcontrol is free to download; Quartet 4 costs $16.99 up front. Quartet 4 sells 5 one-off in-app purchases. MOJOcontrol asks for nothing beyond the download.

UpkeepUpdate frequency

MOJOcontrol ships an update every 56 months, Quartet 4 monthly. The most recent releases landed on October 25, 2026 and October 24, 2026 respectively.

Scorecard4 real differences · 6 level
MOJOcontrol versus Quartet 4: the parameters behind the verdict, then further details
ParameterMOJOcontrolQuartet 4
PriceFree — better$16.99
Rating—4.7 (19 ratings) — better
Positive reviews—89.5% of reviews
Number of ratings—19 — better
Update frequencyEvery 56 monthsMonthly — better
AdsNoNo
In-app purchasesNo — betterYes
Monetization—Paid
DevicesiPadiPhone, iPad — better
Requires iOS10.0 — better16.6
Further details — not scored
Size87 MB528 MB
Age rating17+4+
DeveloperHIT MusicUK Music Apps Ltd

Bugs and requests

MOJOcontrol

Not enough reviews yet to summarise bugs or requests.

Quartet 4

Requested features

1 request
  • More guitar in rhythm section for future volumes

In-app purchases

None

MOJOcontrol

No in-app purchases

5 purchases

Quartet 4

One-time5
  • Upgrade song$0.99
  • Buy 10 tokens$8.99
  • Buy 20 tokens$14.99
Show 2 more
  • Buy 50 tokens$22.99
  • Upgrade all songs$39.99

Questions

Is MOJOcontrol free?
MOJOcontrol is free to download, with no in-app purchases.
Is Quartet 4 free?
Quartet 4 costs $16.99, and also offers in-app purchases.
Do MOJOcontrol or Quartet 4 have ads?
Neither MOJOcontrol nor Quartet 4 shows ads.
Which is updated more often, MOJOcontrol or Quartet 4?
MOJOcontrol ships an update every 56 months, and Quartet 4 monthly. Most recently, MOJOcontrol was updated on October 25, 2026 and Quartet 4 on October 24, 2026.

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