Comparison

iGigBook Mobile 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

iGigBook Mobile

Manage your sheet music collection on your iPhone. Quickly search for songs, view melodies, chords, and lyrics, and transpose chord charts. Easily share set lists and PDFs with band members.

Highlights
  • Song search by title or composer
  • View melody, chords, and lyrics
  • Transposable chord charts for Jazz standards
  • Load PDF books via iTunes, email, or web
  • Email set lists with PDF attachments
  • Indexes for over 70 fake and real books
Features
Currently charting
Read full description

The ultimate pocket sized song reference for Musicians, Music Students and Educators has just got even better with the addition of chord charts that transpose! We've added an index to over 1,300 chord charts of Jazz standards that you can transpose to any key. Register and check for "Jazz Chord Charts - Transpose" in the Book List view. iGigBook Mobile provides indexes for over 70 fake books and real books, giving you the ability to quickly search for songs by title or composer. Load PDF books onto your device using iTunes, email or the web for quick and easy reference. iGigBook Mobile lets you find out which book a song is in, what page it is on and most importantly, you can view the page of the book on your device. Heading to the gig or rehearsal and can't remember what the melody to the tune is? Just use iGigBook Mobile to look up the song and display it with melody, chords and lyrics. Do you need to share your set list and sheet music with your band members? iGigBook Mobile lets you email your set list AND include a PDF attachment of all of the songs in the set list. NOTE: This is not an iPad App, it is designed for the small screen of an iPhone or iPod. * iGigBook Mobile DOES NOT INCLUDE ANY PDF BOOKS, IT ONLY PROVIDES THE INDEXES FOR THE BOOKS.

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

iGigBook Mobile4 screens
Quartet 44 screens

Verdict

The call

The clearest difference is review sentiment: Quartet 4 at 89% against iGigBook Mobile's 35%. Quartet 4 also leads on rating (4.7 vs 4.2). iGigBook Mobile's advantage is price ($9.99 vs $16.99) and chart position (#197 vs unranked). On update cadence, ads, in-app purchases 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

iGigBook Mobile costs $9.99 and Quartet 4 $16.99 up front. iGigBook Mobile sells 1 one-off in-app purchase and Quartet 4 sells 5 one-off in-app purchases. Whichever you choose, the download price is not the number that matters.

ReceptionRating · Positive reviews · Number of ratings

Quartet 4 holds the better App Store score, 4.7 against 4.2. Both are backed by a comparable volume of ratings — 68 and 20 respectively. Written reviews point the same way: 35% of iGigBook Mobile's written reviews are positive against 89% of Quartet 4's.

UpkeepUpdate frequency

Both ship on a similar rhythm, roughly monthly. The most recent releases landed on October 27, 2026 and October 28, 2026 respectively.

Scorecard7 real differences · 4 level
iGigBook Mobile versus Quartet 4: the parameters behind the verdict, then further details
ParameteriGigBook MobileQuartet 4
Price$9.99 — better$16.99
Rating4.2 (68 ratings)4.7 (20 ratings) — better
Positive reviews34.9% of reviews89.5% of reviews — better
Number of ratings68 — better20
Update frequencyMonthlyMonthly
AdsNoNo
In-app purchasesYesYes
MonetizationFree with in-app purchases — betterPaid
Best chart rank#197 — better—
DevicesiPhone, iPodiPhone, iPad
Requires iOS11.0 — better16.6
Further details — not scored
Size14 MB528 MB
Age rating4+4+
DeveloperBlack & White Software LLCUK Music Apps Ltd

Customer experience

iGigBook Mobile

All ratings68 ratings
Positive80.9%
Neutral2.9%
Negative16.2%
Written reviews63 reviews
Positive34.9%
Neutral7.9%
Negative57.1%

Quartet 4

All ratings17 ratings
Positive94.1%
Neutral0.0%
Negative5.9%
Written reviews19 reviews
Positive89.5%
Neutral5.3%
Negative5.3%

User reviews

iGigBook Mobile

From 68 App Store ratings

What we love

  • 👍 Organizes PDF files well
  • 👍 Great for gigging musicians
  • 👍 Useful for practice
  • 👍 Transposable chord charts are great
  • 👍 Indexes PDF fake books

Room to improve

  • 😞 No music content included
  • 😞 Misleading app description
  • 😞 Waste of money
  • 😞 Difficult to set up
  • 😞 Not intuitive

Quartet 4

From 20 App Store ratings

What we love

  • 👍 Superb interface
  • 🎨 Accurately labels tracks by style
  • 🎶 Live instrument recordings
  • 🔀 Ability to separate and send tracks
  • 🎨 High-quality presentation and performance

Bugs and requests

iGigBook Mobile

Reported bugs

9 issues
  • App doesn't work
  • PDFs are grayed out
  • Indexing doesn't always work
  • Cannot access second page of a tune
  • Song search has issues with multiple finds
Show 4 more
  • Registration website won't load
  • Conflicts with other apps (iFakeBooks)
  • Cannot tap page turn when zoomed in
  • Jazz1200 not working as advertised

Requested features

9 requests
  • Search function in unindexed scores
  • Dark mode option
  • Two-page view
  • Support for other musical styles
  • Ability to rotate pages
Show 4 more
  • Easier way to import lyrics
  • Direct download links for PDFs
  • Option to change book names
  • Landscape mode support

Quartet 4

Requested features

1 request
  • More guitar in rhythm section for future volumes

In-app purchases

1 purchases

iGigBook Mobile

One-time1
  • Transposable Jazz Chord ChartsFree
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 iGigBook Mobile free?
iGigBook Mobile costs $9.99, and also offers in-app purchases.
Is Quartet 4 free?
Quartet 4 costs $16.99, and also offers in-app purchases.
Which has better reviews, iGigBook Mobile or Quartet 4?
Quartet 4 is rated higher. iGigBook Mobile averages 4.2 out of 5 from 68 ratings, while Quartet 4 averages 4.7 from 20 ratings.
Do iGigBook Mobile or Quartet 4 have ads?
Neither iGigBook Mobile nor Quartet 4 shows ads.
Which is updated more often, iGigBook Mobile or Quartet 4?
iGigBook Mobile ships an update monthly, and Quartet 4 monthly. Most recently, iGigBook Mobile was updated on October 27, 2026 and Quartet 4 on October 28, 2026.

Other comparisons