ChordLab vs Jazz Pad
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
ChordLab
Explore modern four-part voice leading and chord permutations. This tool helps intermediate musicians discover new chord voicings and understand harmonic structures. Features include a Circle of Fifths, chord finder, and virtual instruments.
- Four-part voice leading calculator
- Chord finder for triads and seventh chords
- Interactive Circle of Fifths
- Virtual piano and guitar instruments
- All inversions and standard voicings
- Apple Watch app for chord spelling
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ChordLab is a specialist tool and calculator of sorts for modern four-part voice leading. Everyone has heard these colors in the arrangements of Big Bands - the horn riffs in the Jetsons carton song for example. With ChordLab we can in a way flip through all possible permutations of these chords. More theoretical background is available in the documentation. This is not a general chord app for beginning instrumentalists. To the intermediate player, however, ChordLab can be a source of great inspiration and introduction to many new color choices. Four-part harmony may feel restrictive on instruments capable of more than 4 voices, but for a small choir for example it is a basic fact of life. It has become a staple in modern music as well as it allows the accompanist to declutter the spectrum in a sense by playing fewer notes. Root and fifth substitutions are applied automatically when dialing up a chord in ChordLab. Simply like that. Once the quality of a chord has been set it can then be viewed and listened to in all standard and not so standard drop voicings and moved through its inversions. This is of particular importance to guitar players as quite a few voicings are impossible to play and one may be left with rather few options. Chord spelling is also the main feature of ChordLab's Apple Watch app. ChordLab has an interactive Circle of Fifths. With it we can look up key signatures for major and minor scales as well as all other modes derived of the major scale. So it is possible for example to display key signatures for all mixolydian scales and simultaneously highlight the other degrees for that mode. Additionally ChordLab displays degree structures for a key in standard Roman numerals. This is extremely useful when putting together chord progressions. Roots of the current harmonic domain are highlighted in white and can be tapped to audit the associated chords. The chord finder feature in ChordLab allows you to search its database for 3 or 4 note structures to determine their harmonic quality. To find a chord in its database ChordLab uses the enharmonically simplest solution and does not require you do know whether a note is called G# or an Ab. This is especially useful for guitarists that seldomly encounter chords in root position due to the tuning of the instrument. Features include: • Chord spelling for all common chords • Notation and textual representation of chord tones • Chord finder for triads and seventh chords • Alto, bass, tenor, treble clefs, TAB and grand staff • All inversions and standard voicings • Virtual piano and guitar instruments • Chord tone labeling in instrument views • All common open and alternate tunings presets (guitar) • Automatic root and fifth substitution • Apple Watch app There is a lot of functionality built into ChordLab, but as with any tool it is what we make of it. If chord spelling is a term in your vocabulary ChordLab should be of interest. Or maybe you want to grow your chord reportoire. Putting music theory into words often makes it sound overly complex yet nobody would say that orange or purple are complicated. ChordLab lets you play and work with colors in a sense and shows you how to play them on your instrument. It is very a unique tool for musicians, song-writers, professionals and music students and one that you will find yourself coming back to again and again.
Jazz Pad
Organize practice sessions, manage music scores, and transcribe songs with advanced tools. Access a large library of jazz standards or upload your own music. Syncs across all devices for seamless practice.
- Smart practice organization
- Custom practice plans
- Music library with 1400+ jazz standards
- Add personal melodies and chord sheets
- Upload and annotate PDF scores
- YouTube video transcription tools
- iCloud sync across devices
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The only app that organizes your practice, manages your scores, and helps you transcribe songs—all in one place, synced across all devices. All while completely free. Smart Practice Organization • Organize your sessions with custom, repeatable practice plans. • Stay focused with a built-in session timer. • Track your progress by logging the keys and areas you’ve practiced each day. Store Your Music Library • Instantly access over 1,400 built-in jazz standards. • Build your personal library by adding melodies to chord sheets. • Go paperless by uploading and annotating your own PDFs. Advanced Transcription Tools • Finally nail that tricky solo. Isolate any section of a YouTube video to master the lines you’ve always wanted to learn. • Save a specific YouTube video to each song in your library for quick reference. Instant Practice Access • Use the Home Screen widget to jump into your practice session with a single tap. Stay In Sync With iCloud • Keep everything seamlessly updated across your iPhone, iPad, and Mac with full iCloud sync.
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Verdict
ChordLab and Jazz Pad both sit at 5.0 stars, but that hides the real split: 100% of Jazz Pad's written reviews are positive against 21% of ChordLab's. Jazz Pad also leads on price (Free vs $3.99) and in-app purchases (none vs 10). On rating, ratings volume, 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
Jazz Pad is free to download; ChordLab costs $3.99 up front. ChordLab sells 10 one-off in-app purchases. Jazz Pad asks for nothing beyond the download.
On the App Store both sit at effectively the same score — 5.0 for ChordLab against 5.0 for Jazz Pad. Both are backed by a comparable volume of ratings — 1 and 1 respectively. Written reviews are what separate them: 21% of ChordLab's written reviews are positive against 100% of Jazz Pad's.
ChordLab ships an update every 3 months, Jazz Pad every 3 days. The most recent releases landed on October 24, 2026 and October 22, 2026 respectively.
| Parameter | ChordLab | Jazz Pad |
|---|---|---|
| Price | $3.99 | Free — better |
| Rating | 5.0 (1 ratings) | 5.0 (1 ratings) |
| Positive reviews | 20.8% of reviews | 100.0% of reviews — better |
| Number of ratings | 1 | 1 |
| Update frequency | Every 3 months | Every 3 days — better |
| Ads | No | No |
| In-app purchases | Yes | No — better |
| Monetization | Paid | Free — better |
| Devices | iPhone, iPad, iPod, Apple Watch — better | iPhone, iPad, iPod |
| Requires iOS | 12.1 | 12.0 — better |
| Further details — not scored | ||
| Size | 40 MB | 111 MB |
| Age rating | 4+ | 4+ |
| Developer | RoGame Software | Mohammed Elmzoudi |
Customer experience
ChordLab
Jazz Pad
In-app purchases
ChordLab
- 01 Keyboard Pack$0.99
- 02 Guitar Pack$0.99
- 03 Bass Pack$0.99
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- 04 Strings Pack$0.99
- 05 Mallets Pack$0.99
- 06 Winds Pack$0.99
- 07 Synths Pack$0.99
- 08 Folk Pack$0.99
- 09 Winds Pack 2$0.99
- 10 Folk Strings Pack$0.99
Jazz Pad
No in-app purchases









