Comparison

THE FEEL BOOK vs Harmony Cloud Pro

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

Head to head
About

THE FEEL BOOK

Practice jazz improvisation with recordings of world-class musicians. Hone your skills with a sophisticated rhythm section and access a growing library of transposable lead sheets. Experiment with advanced features like looping, transposition, and a 3-channel mixer to elevate your musical performance.

Highlights
  • Improvise with a professional rhythm section
  • Isolate and study bass lines
  • Sophisticated piano harmony
  • Transposable lead sheets
  • Advanced looping capabilities
  • Variable tempo control
  • 3-channel instrument mixer
Features
Currently charting
Read full description

There is no substitute for the energy and interplay of performing live with world-class jazz heavyweights. But what if everyone had the opportunity to practice along with these very same musicians? To hone their skills with true masters of the art form? THE FEEL BOOK accomplishes this by bringing the greatest musicians on the planet to you. Set aside your robotic recreations and subpar tracks and come play with the greats today! - Improvise over a (super)human rhythm section - Improve your feel and creativity along with a top tier drummer’s ride cymbal. - Play along with (or even isolate and study) a perfectly crafted bass line. - Work over a pianist’s sophisticated harmony based on historical research of the ideal chord changes for each tune. - Carry an expanding library of transposable lead sheets put together by the pros on your smartphone, tablet or laptop The Feel Book transports you to New York and allows you to play with the best from the modern jazz scene while integrating advanced technical features like never before. -Advanced Looping capabilities -Transposition to practice in multiple keys -3 channel mixer to experiment with levels or mute instruments (great for drummers and bassists!) -Variable tempo, to practice slower or test your limits -Global transposition of lead sheets for Bb and Eb instruments Members will have access to the full library (adding at least 10 new tracks each month in a constantly expanding list!) featuring a wide range of styles played by the modern elite (players that have backed everyone from Michael Brecker to Roy Hargrove to Astrid Gilberto!) Players like Willie Jones III, Glenn Zaleski, Danton Boller, Ari Hoenig, Dave Kikoski, Colin Stranahan, Victor Gould, Joe Dyson, Matt Brewer, Rick Rosato, Kiyoshi Kitagawa, Duduka Fonseca, Helio Alves, and Gili Lopes AND MORE to come each month! THE FEEL BOOK - elevating the groove and swing of today’s musician to a new level.

About

Harmony Cloud Pro

This app helps musicians of all levels develop their ear for harmony and improvisation. It generates endless, unpredictable chord progressions based on user-selected chords, allowing for personalized learning and exploration of musical concepts.

Highlights
  • Ear training for musicians
  • Improvisation exploration
  • Generates unpredictable chord progressions
  • Customizable tempo, volume, and key
  • Tailorable to all skill levels
  • Patented harmonic algorithm
Features
Read full description

Understanding harmony is an essential skill for any musician. Harmony is the springboard that elevates melodies to their full emotional potential. Harmony Cloud™ is a revolutionary step forward in the world of ear training created by world renowned jazz vibraphonist and music educator Stefon Harris, and software engineer and jazz trombonist Kate Jiang. It is designed to help all musicians, from beginner to professional, expand their ears, deepen their understanding of harmony, and fearlessly explore the world of improvisation. Its underlying patented harmonic algorithm stitches together chords you select into an unending source of unpredictable, yet musical, chord progressions. Harmony Cloud can be tailored to any musician's or teacher’s needs. Chord progressions can range from very simple I, IV, V to progressions that include hundreds of chords. This makes it easy to learn and grow at your own pace. You have control of all aspects of the music including tempo, volume, sounds, key signature, and much more. Privacy Policy: https://harmonycloudmusic.com/privacy Terms & Conditions: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/

Screenshots

THE FEEL BOOK4 screens
Harmony Cloud Pro3 screens

Verdict

The call

The clearest difference is rating: Harmony Cloud Pro at 5.0 against THE FEEL BOOK's 4.5. Harmony Cloud Pro also leads on review sentiment (87% vs 71%) and update cadence (weekly vs every 2 weeks). THE FEEL BOOK's advantage is chart position (#164 vs unranked). On price, ratings volume, ads and in-app purchases 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

Both are free to download. THE FEEL BOOK sells 3 in-app purchases, starting at $6.99 per month and Harmony Cloud Pro sells 2 in-app purchases, starting at $5.99 per month. Whichever you choose, the download price is not the number that matters.

ReceptionRating · Positive reviews · Number of ratings

Harmony Cloud Pro holds the better App Store score, 5.0 against 4.5. Both are backed by a comparable volume of ratings — 51 and 65 respectively. Written reviews point the same way: 71% of THE FEEL BOOK's written reviews are positive against 87% of Harmony Cloud Pro's.

UpkeepUpdate frequency

THE FEEL BOOK ships an update every 2 weeks, Harmony Cloud Pro weekly. Both last shipped on September 23, 2026.

Scorecard4 real differences · 7 level
THE FEEL BOOK versus Harmony Cloud Pro: the parameters behind the verdict, then further details
ParameterTHE FEEL BOOKHarmony Cloud Pro
PriceFreeFree
Rating4.5 (51 ratings)5.0 (65 ratings) — better
Positive reviews71.1% of reviews86.7% of reviews — better
Number of ratings5165 — better
Update frequencyEvery 2 weeksWeekly — better
AdsNoNo
In-app purchasesYesYes
MonetizationFree with in-app purchasesFree with in-app purchases
Best chart rank#164 — better—
DevicesiPhone, iPad, iPod, Mac — betteriPhone, iPad, iPod
Requires iOS15.615.1 — better
Further details — not scored
Size73 MB194 MB
Age rating4+4+
Developer2XJ VENTURES LLCThe Melodic Progression Institute LLC

Customer experience

THE FEEL BOOK

All ratings51 ratings
Positive84.3%
Neutral5.9%
Negative9.8%
Written reviews45 reviews
Positive71.1%
Neutral6.7%
Negative22.2%

Harmony Cloud Pro

All ratings65 ratings
Positive98.5%
Neutral1.5%
Negative0.0%
Written reviews15 reviews
Positive86.7%
Neutral0.0%
Negative13.3%

In-app purchases

3 purchases

THE FEEL BOOK

Subscriptions3
  • Monthly subscription3 Days trial$6.991 Month
  • Quarterly Subscription7 Days trial$16.493 Months
  • Annual Subscription14 Days trial$47.901 Year
2 purchases

Harmony Cloud Pro

Subscriptions2
  • Monthly7 Days trial$5.991 Month
  • Annual7 Days trial$59.991 Year

Questions

Is THE FEEL BOOK free?
THE FEEL BOOK is free to download, with in-app purchases available.
Is Harmony Cloud Pro free?
Harmony Cloud Pro is free to download, with in-app purchases available.
Which has better reviews, THE FEEL BOOK or Harmony Cloud Pro?
Harmony Cloud Pro is rated higher. THE FEEL BOOK averages 4.5 out of 5 from 51 ratings, while Harmony Cloud Pro averages 5.0 from 65 ratings.
Do THE FEEL BOOK or Harmony Cloud Pro have ads?
Neither THE FEEL BOOK nor Harmony Cloud Pro shows ads.
Which is updated more often, THE FEEL BOOK or Harmony Cloud Pro?
THE FEEL BOOK ships an update every 2 weeks, and Harmony Cloud Pro weekly. Most recently, THE FEEL BOOK was updated on September 23, 2026 and Harmony Cloud Pro on September 23, 2026.

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