Comparison

Harmony Cloud Pro vs Open Studio Jazz

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

Head to head
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/

About

Open Studio Jazz

This platform offers guided jazz education for all skill levels, featuring weekly lessons on real jazz standards and pathways for practice. Learn from renowned jazz musicians and track your progress across devices.

Highlights
  • Weekly new jazz standard lessons
  • Guided practice pathways
  • Courses by legendary jazz musicians
  • Progress tracking across devices
  • Beginner to advanced levels
  • Full library of technique, theory, and improvisation courses
Read full description

Living a musical life is not a finish line, it is something you build into your days. Open Studio is the jazz education platform for players who want to play better and enjoy the process, wherever they are: beginner, intermediate, or advanced, on any instrument. A clear home for wherever you are in your playing Open Studio gives beginner, intermediate, and advanced players their own dedicated learning dashboard. Instead of guessing where to start or what comes next, you open the app and see your path laid out in front of you. New piano lessons every week, built around real jazz standards - Our instructors add new lessons every week, built around the songs jazz musicians actually play. You are learning through real repertoire from day one, not abstract exercises disconnected from the music you love. Guided practice, without the overwhelm - Jazz has a lot to learn: theory, technique, repertoire, improvisation. Open Studio's guided pathways solve the question every player asks: "What should I practice next?" Each lesson connects to the next, so your practice time has direction instead of guesswork. Learn from real jazz musicians - Our courses are taught by professional jazz musicians and educators, covering everything from foundational technique to advanced improvisation, including Ron Carter (bass), Emmet Cohen (piano), Peter Martin (piano), Adam Maness (piano), Aaron Parks (piano), Larry Goldings (piano), Fred Hersch (piano), Sean Jones (trumpet), Dianne Reeves (vocals) and more. Practice on your schedule, wherever you are - The Open Studio app puts your lessons, courses, and practice pathways in your pocket. Pick up a session on the train, before a gig, or during a quiet ten minutes at home. Your progress travels with you. Built for the long term - We do not believe in shortcuts or overnight mastery. Jazz is a lifelong pursuit, and Open Studio is built to support you at every stage of it, from your first chord voicings to your first solo you are proud of. Open Studio membership includes: - Weekly new lessons built around real jazz standards - Guided Practice Sessions and Skill Pathways for beginner, intermediate, and advanced players - A full library of courses across technique, theory, and improvisation - Specialized courses taught by legendary jazz musicians - Progress that stays with you across devices Whether you are picking up an instrument for the first time or you have been playing for decades, Open Studio is here to help you live a musical life, one practice session at a time. START YOUR FREE TRIAL Start your 14-day free trial today and get full access to piano, bass, guitar, drums and more. Try it risk free. If Open Studio isn't right for you, you're covered by our 90-day satisfaction guarantee. Download the app and start today. Terms of Use: https://www.openstudiojazz.com/terms-of-service/ Privacy Policy: https://www.openstudiojazz.com/privacy-policy/

Screenshots

Harmony Cloud Pro3 screens
Open Studio Jazz4 screens

Verdict

The call

The clearest difference is ratings volume: Harmony Cloud Pro at 65 against Open Studio Jazz's 5. Open Studio Jazz's advantage is review sentiment (100% vs 87%). On price, rating, update cadence and ads 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. Harmony Cloud Pro sells 2 in-app purchases, starting at $5.99 per month and Open Studio Jazz sells 4 in-app purchases, starting at $39.00 per month. Whichever you choose, the download price is not the number that matters.

ReceptionRating · Positive reviews · Number of ratings

On the App Store both sit at effectively the same score — 5.0 for Harmony Cloud Pro against 5.0 for Open Studio Jazz. That said, the two scores are not equally well evidenced: Harmony Cloud Pro has 65 ratings behind it against 5, so its average is the more settled of the two. Written reviews are what separate them: 87% of Harmony Cloud Pro's written reviews are positive against 100% of Open Studio Jazz's.

UpkeepUpdate frequency

Harmony Cloud Pro ships an update weekly, Open Studio Jazz every 5 days. The most recent releases landed on October 11, 2026 and October 13, 2026 respectively.

Scorecard2 real differences · 8 level
Harmony Cloud Pro versus Open Studio Jazz: the parameters behind the verdict, then further details
ParameterHarmony Cloud ProOpen Studio Jazz
PriceFreeFree
Rating5.0 (65 ratings)5.0 (5 ratings)
Positive reviews86.7% of reviews100.0% of reviews — better
Number of ratings65 — better5
Update frequencyWeeklyEvery 5 days — better
AdsNoNo
In-app purchasesYesYes
MonetizationFree with in-app purchasesFree with in-app purchases
DevicesiPhone, iPad, iPodiPhone, iPad, iPod
Requires iOS15.115.1
Further details — not scored
Size194 MB51 MB
Age rating4+4+
DeveloperThe Melodic Progression Institute LLCOpen Studio Network LLC

Customer experience

Harmony Cloud Pro

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

Open Studio Jazz

All ratings5 ratings
Positive100.0%
Neutral0.0%
Negative0.0%
Written reviews1 reviews
Positive100.0%
Neutral0.0%
Negative0.0%

In-app purchases

2 purchases

Harmony Cloud Pro

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

Open Studio Jazz

Subscriptions4
  • Open Studio (Monthly)14 Days trial$39.001 Month
  • Open Studio Pro (Monthly)$97.001 Month
  • Open Studio (Annual)14 Days trial$390.001 Year
Show 1 more
  • Open Studio Pro (Annual)$559.991 Year

Questions

Is Harmony Cloud Pro free?
Harmony Cloud Pro is free to download, with in-app purchases available.
Is Open Studio Jazz free?
Open Studio Jazz is free to download, with in-app purchases available.
Which has better reviews, Harmony Cloud Pro or Open Studio Jazz?
Harmony Cloud Pro and Open Studio Jazz are both rated 5.0 out of 5 on the App Store, from 65 and 5 ratings respectively.
Do Harmony Cloud Pro or Open Studio Jazz have ads?
Neither Harmony Cloud Pro nor Open Studio Jazz shows ads.
Which is updated more often, Harmony Cloud Pro or Open Studio Jazz?
Harmony Cloud Pro ships an update weekly, and Open Studio Jazz every 5 days. Most recently, Harmony Cloud Pro was updated on October 11, 2026 and Open Studio Jazz on October 13, 2026.

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