Comparison

Slow Down Music | Transcribe+ vs Quartet 3

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

Head to head
About

Slow Down Music | Transcribe+

This app allows musicians to slow down music, change pitch, and isolate instruments using AI. It supports various chord chart formats and offers looping features for practice. Enhance your learning and transcription with advanced audio tools.

Highlights
  • AI instrument separation (vocals, drums, bass, guitar, piano)
  • Adjustable tempo and pitch
  • Interactive waveform scrubbing
  • Chord chart import and auto-detection
  • Customizable looping for practice
  • Video loading for visual reference
  • 10-band EQ for frequency adjustment
Features
Read full description

Transcribe+ combines high quality tempo and pitch-shifting with on-device AI that splits a song into vocals, drums, bass, guitar, piano, and other instruments, so you can isolate and hear EXACTLY what you are transcribing by ear. Now on iPhone, iPad, and Mac! Adjust speed and pitch effortlessly with simple swipe gestures. Tap the waveform to pause the track, then drag to listen at your chosen pace, even one note at a time! Attach chord charts that follow the form of the song, mark song structures or add personal notes using customizable flags on the waveform, and practice specific sections repeatedly by defining looped areas. Key Features: • Speed adjustable from 0.25x to 2x without affecting pitch. • Split tracks into 2, 4, or 6 stems (vocals, drums, bass, guitar, piano, other). • Easy pitch modification by +/-12 semitones. • Fine-tune pitch adjustment slider with 1 cent increments. • Interactive waveform interface for real-time scrubbing and listening note by note. • Chord charts from MusicXML, ABC, iReal Pro, or pasted text. • Beats, bars, tempo, and key detected automatically. • Consolidate and practice loops in a single location with Loop View. • Smart Loops can automatically increase speed or shift pitch with each loop. • Load videos for enhanced visual understanding. • Intuitive 10-band EQ toolbar for refined frequency adjustment and additional isolation possibilities. • Mark and annotate waveforms for efficient review. • Easily export loops or entire tracks in eight formats. • Multiple windows and split-screen multitasking for efficient iPad use. • 11 attractive themes with elegant icons. • Keyboard shortcuts compatible with foot pedals for easier control during practice. • Integration with popular cloud storage services. AI Vocal Removal & Stems Separation: Remove or isolate vocals, drums, bass, guitar, piano, or other instruments on ANY track (without DRM). Use this feature to focus on the instruments you're interested in, or create a play-along track. Stems are split entirely on your device, with no uploading and no limits. If an instrument isn't in the song, its stem is hidden instead of filled with leftover noise. Export any combinations of stems and remix them as you like! Chord Charts: Import common chord chart formats you find online. The chord changes run under the waveform, following the actual form of the song. Transcribe+ listens to the whole song on your device and suggests the exact beat where the form starts. If a bar is stretched or squeezed, or the song is heard at double or half tempo, it offers a one-tap fix. Loop View with "Smart Loops": View all your loops in the loop view. Simply tap the loop icon to start or stop a loop. You can set parameters for a metronome count-in before each loop or auto-increase speed or shift pitch with each repetition. Link loops as you learn, starting with small chunks and joining them together with a tap. EQ ToolBar, Channel Mixer, and Fine Tuning Slider: Further isolate or enhance the part you're listening to with the EQ toolbar or the Stereo Channel mixer. You can also finely adjust the overall pitch of the track in increments of 1 cent. Transcribe+ for Mac: Transcribe+ now runs on the Mac, with a full menu bar, keyboard shortcuts, and all of the same features. Apple Music Support: Transcribe+ integrates with Apple Music, letting you adjust the tempo and add flags and loops to any song in your Apple Music library. Please note, due to DRM music streaming limitations, some features are unavailable on Apple Music tracks. iCloud Sync: All of your flags, loops, chord charts, and settings for each track you load are automatically saved to iCloud. These settings also sync automatically across all your devices. Six stems require a device with 8 GB of memory or more; other devices split 4 stems. Beat detection and chord charts require iOS 27 or macOS 27. Terms of Use: https://dynamicappdesign.com/tos.html

About

Quartet 3

Enhance your jazz performance and practice with live studio recordings of jazz standards. Mute your instrument to play along, change keys, adjust tempo, and loop sections for focused learning. Features animated chord diagrams and playlist creation for seamless practice sessions.

Highlights
  • Live jazz standards play-along
  • Mute your instrument
  • Change key and tempo
  • Loop sections for practice
  • Animated chord diagrams
  • Multi-app playlist creation
  • Multitrack export
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 3 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 3 include improvisations in the style of… ‘After You’ve Gone’, ‘Ain’t No Sunshine’, ‘At Last’, ‘Baubles, Bangles & Beads’, ‘Blueberry Hill’, ‘Blues’ (in all keys), ‘Breezin’’, ‘Chameleon’, ‘Down by the Riverside’, ‘Freedom Jazz Dance’, ‘How Long Has This Been Going On?’, ‘Ladies in Mercedes’, ‘On the Street Where You Live’, ‘Second Time Around’, ‘Someone To Watch Over Me’, ‘Summer Knows’, ‘Só Danço Samba’, ‘Too Marvelous for Words’, ‘Who Can I Turn To?’, ‘With a Song in My Heart’… 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 3 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

Slow Down Music | Transcribe+4 screens
Quartet 34 screens

Verdict

The call

The clearest difference is price: Slow Down Music | Transcribe+ at Free against Quartet 3's $16.99. Slow Down Music | Transcribe+ also leads on ratings volume (5.4K vs 22) and update cadence (every 9 days vs monthly). Quartet 3's advantage is review sentiment (90% vs 64%). On rating, ads, in-app purchases and monetization model 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

Slow Down Music | Transcribe+ is free to download; Quartet 3 costs $16.99 up front. Slow Down Music | Transcribe+ sells 4 in-app purchases, starting at $9.99 per month and Quartet 3 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 3 holds the better App Store score, 4.7 against 4.5. That said, the two scores are not equally well evidenced: Slow Down Music | Transcribe+ has 5.4K ratings behind it against 22, so its average is the more settled of the two. Written reviews point the same way: 64% of Slow Down Music | Transcribe+'s written reviews are positive against 90% of Quartet 3's.

UpkeepUpdate frequency

Slow Down Music | Transcribe+ ships an update every 9 days, Quartet 3 monthly. The most recent releases landed on October 29, 2026 and October 30, 2026 respectively.

Scorecard4 real differences · 6 level
Slow Down Music | Transcribe+ versus Quartet 3: the parameters behind the verdict, then further details
ParameterSlow Down Music | Transcribe+Quartet 3
PriceFree — better$16.99
Rating4.5 (5.4K ratings)4.7 (22 ratings) — better
Positive reviews64.0% of reviews90.0% of reviews — better
Number of ratings5.4K — better22
Update frequencyEvery 9 days — betterMonthly
AdsNoNo
In-app purchasesYesYes
MonetizationFreemiumFree with in-app purchases
DevicesiPhone, iPad, Mac — betteriPhone, iPad
Requires iOS17.616.6 — better
Further details — not scored
Size356 MB528 MB
Age rating4+4+
DeveloperDynamic App Design LLCUK Music Apps Ltd

Customer experience

Slow Down Music | Transcribe+

All ratings5,359 ratings
Positive88.5%
Neutral3.1%
Negative8.3%
Written reviews508 reviews
Positive64.0%
Neutral9.1%
Negative27.0%

Quartet 3

All ratings18 ratings
Positive88.9%
Neutral0.0%
Negative11.1%
Written reviews20 reviews
Positive90.0%
Neutral0.0%
Negative10.0%

User reviews

Slow Down Music | Transcribe+

From 5.4K App Store ratings

What we love

  • 🚀 Outstanding audio quality
  • 🚀 Excellent slow-down and pitch-change capabilities
  • 🚀 Useful loop and flag features
  • 👍 Great for learning difficult parts
  • 👍 Helpful for transcribing and practicing

Room to improve

  • 🐛 Inconsistent performance with DRM-protected tracks
  • 🔒 Premium features locked behind paywall
  • 🐛 Distorted audio when slowed down or sped up
  • 🐛 Crashes and bugs after recent updates

Quartet 3

From 22 App Store ratings

What we love

  • 👍 Superb tool for drum teachers
  • 👍 Huge selection of styles and tempos
  • 👍 Ability to mute drums for playing along
  • 👍 High-quality audio recordings
  • 👍 Intuitive and easy to use interface

Bugs and requests

Slow Down Music | Transcribe+

Reported bugs

4 issues
  • Playback issues with DRM-protected tracks
  • Crashes when trying to export loops
  • Inconsistent behavior when scrolling and scrubbing
  • Inability to delete individual songs from recent list

Requested features

5 requests
  • Ability to save and manage custom loops and flags
  • Metronome or beat detection feature
  • Deeper integration with streaming services like Spotify
  • More precise control over pitch and speed adjustments
  • Improved audio isolation and separation of instruments

Quartet 3

No bugs or feature requests surfaced in reviews.

In-app purchases

4 purchases

Slow Down Music | Transcribe+

Subscriptions2
  • Transcribe+ Premium Monthly$9.991 Month
  • Transcribe+ Premium Yearly7 Days trial$39.991 Year
One-time2
  • Unlock Everything$79.99
  • Unlock Everything$99.99
5 purchases

Quartet 3

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 Slow Down Music | Transcribe+ free?
Slow Down Music | Transcribe+ is free to download, with in-app purchases available.
Is Quartet 3 free?
Quartet 3 costs $16.99, and also offers in-app purchases.
Which has better reviews, Slow Down Music | Transcribe+ or Quartet 3?
Quartet 3 is rated higher. Slow Down Music | Transcribe+ averages 4.5 out of 5 from 5.4K ratings, while Quartet 3 averages 4.7 from 22 ratings.
Do Slow Down Music | Transcribe+ or Quartet 3 have ads?
Neither Slow Down Music | Transcribe+ nor Quartet 3 shows ads.
Which is updated more often, Slow Down Music | Transcribe+ or Quartet 3?
Slow Down Music | Transcribe+ ships an update every 9 days, and Quartet 3 monthly. Most recently, Slow Down Music | Transcribe+ was updated on October 29, 2026 and Quartet 3 on October 30, 2026.

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