Comparison

ChordDeck vs Play Jazz

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

Head to head
About

ChordDeck

This app provides jazz chord flashcards for musicians to practice chord recall. It displays chord symbols, tones, formulas, and keyboard highlights, with audio playback. Users can mark difficult cards for later review.

Highlights
  • Practice jazz chord qualities
  • Circle-of-fourths or random root order
  • Continuous or one-pass practice sessions
  • View chord tones, formulas, and keyboard highlights
  • Built-in audio playback
  • Mark and review difficult cards
  • Local storage for settings and marked cards
Features
Read full description

ChordDeck is a compact flashcard app for practicing jazz chord recall. Choose the roots and chord qualities you want to drill, then move through a focused deck one card at a time. Each card starts with a chord symbol so you can recall the answer mentally or on your instrument before revealing the details. Reveal a card to check the chord tones, a short formula, a compact piano keyboard highlight, and built-in audio playback. Mark difficult cards during practice and review them again later from the first screen. ChordDeck is designed for musicians who already know basic chord concepts and want a fast, repeatable way to build fluency. It keeps practice visual and direct instead of turning each session into a lesson page. Features: - Practice common jazz chord qualities across selected roots. - Follow circle-of-fourths root order or use random card order. - Choose one-pass sessions or continuous practice. - Reveal chord tones, formulas, and compact keyboard highlights. - Hear chord tones followed by the full chord. - Mark difficult cards and review them in a focused deck. - Use swipe navigation, previous and next controls, and timed autoplay. - Keep practice settings and marked cards stored locally on your device. ChordDeck is useful for jazz students, pianists, guitarists, bassists, arrangers, and other musicians who want quicker recognition of chord symbols, tones, and formulas.

About

Play Jazz

Features
Read full description

Play Jazz turns your iPhone or iPad into an approachable jazz instrument. Choose a sound, start a backing groove, and play notes that fit the current harmony. Features: - Scale-safe keyboard with Home Scale and Chord Scale modes - Jazz chord progressions and backing grooves - Piano, Hammond organ, guitar, brass, and other instrument sounds - Sustain controls and touch-friendly slide playing - Tempo, mix, and three-band EQ controls - No account required Play freely, explore jazz harmony, and build confidence without worrying about wrong notes. The app is free and supported by non-personalized banner advertising.

Screenshots

ChordDeck4 screens
Play Jazz4 screens

Verdict

The call

The clearest difference is price: Play Jazz at Free against ChordDeck's $0.99. Play Jazz also leads on iOS requirement (13.0 vs 17.0). ChordDeck's advantage is ads (none vs shown). On update cadence, 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

Play Jazz is free to download; ChordDeck costs $0.99 up front. Neither carries in-app purchases, so what you see is what you pay.

UpkeepUpdate frequency

ChordDeck ships an update weekly, Play Jazz every 5 days. The most recent releases landed on October 15, 2026 and October 16, 2026 respectively.

Scorecard3 real differences · 7 level
ChordDeck versus Play Jazz: the parameters behind the verdict, then further details
ParameterChordDeckPlay Jazz
Price$0.99Free — better
Rating5.0 (1 ratings) — better—
Positive reviews100.0% of reviews—
Number of ratings1 — better—
Update frequencyWeeklyEvery 5 days — better
AdsNo — betterYes
In-app purchasesNoNo
MonetizationPaid—
DevicesiPhone, iPadiPhone, iPad, iPod — better
Requires iOS17.013.0 — better
Further details — not scored
Size4 MB22 MB
Age rating4+4+
DeveloperShinhye LeeMateusz Smarduch

In-app purchases

None

ChordDeck

No in-app purchases

None

Play Jazz

No in-app purchases

Questions

Is ChordDeck free?
ChordDeck costs $0.99, with no in-app purchases.
Is Play Jazz free?
Play Jazz is free to download, with no in-app purchases.
Do ChordDeck or Play Jazz have ads?
Play Jazz shows ads; ChordDeck does not.
Which is updated more often, ChordDeck or Play Jazz?
ChordDeck ships an update weekly, and Play Jazz every 5 days. Most recently, ChordDeck was updated on October 15, 2026 and Play Jazz on October 16, 2026.

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