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60
BU Score
Solid

Mapping Tonal Harmony Pro

4.1 ✍️ Editor
✍️ BU Analytics Review

Mapping Tonal Harmony Pro is an iOS app from MDECKS MUSIC, LLC in the News category, currently rated 4.1★ across 66 ratings. Initial signal reads as mixed reviews — supporters praise core features while critics cite stability/value gaps.

Our BU Score puts it at 60Solid (established niche player). For a News app, that means established niche player.

Track changes month-over-month in the Performance section below — live snapshot history and revenue forecast included.

📊 Performance Tracking LIVE

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Reviews
Forecast Revenue / mo
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💰 Forecast Revenue / mo

MODEL
Revenue forecast computed from BU's 234 trigger model on each snapshot. Calibrated against ground-truth from 58 verified-revenue apps.
🔬Forecast Breakdown — Why This Estimate?Top 12 of 12 triggers
Our ML model uses 200+ signals from public data. These are the most influential for this app:
Paid app ($14.99)METRIC
+$2,800
worth every pennyREVIEW
+$2,000
bugsREVIEW
−$1,800
5 starREVIEW
+$1,800
great valueREVIEW
+$1,600
excellent appREVIEW
+$1,500
Mature app (13y old)METRIC
+$1,500
highly recommendREVIEW
+$1,400
priceyREVIEW
−$800
Good rating (4.1★)METRIC
+$800
Single-language (English only)METRIC
−$400
Pre-traction phase (66 ratings)METRIC
−$300
METRIC = structural app data · REVIEW = mined from user reviews · ✓ VERIFIED = Stripe-verified anchor (TrustMRR)

📈 Reviews Growth

LIVE
Cumulative review count from first BU snapshot. Each point = a tracked update.
💚Sentiment Over Time↑ green = positive · ↓ red = negative
Jun 24
Dec 24
Feb 25
Mar 25
Jan 26

⭐ Rating Trend

LIVE
Average rating evolution. Updates with each new review batch.

🗓️ Snapshot Timeline

HISTORY
Each bar shows a tracked update and the metric delta from the previous snapshot.
App Specs
🔐 Own this app? Claim & verify MRR →
💾 280 MB🔞 4+📱 iOS 16.0+🔖 v10.8.3🔄 updated 1y ago🌐 EN📂 News💰 Paid🚀 Launched 2012 (13y old)

📝 About this app

Mapping Tonal Harmony Pro is the most INNOVATIVE and EXTENSIVE music tool for musicians out there. This app is invaluable for students of all levels, as well as professional performers, composers, arrangers, and teachers. There are plenty video tutorials and an online manual accessible within the app.

The ANALYZER ADD-ON is here! An A.I. tool like no other.
The Analyzer can do an entire harmonic analysis of any song/piece from a text file. Finds key centers, pivot chords, secondary dominants, modulations, etc.
Import MusicXml files directly from iReal Pro

Play-along, Practice Improvisation. Reharmonize any song with the tap of a button. Create 12-keys workouts to practice. Study Target Notes and Upper Structures.
Print Scores with Full Harmonic Analysis, or just as the chord changes or Export as MIDI.
Play-along in different styles with the option to personalize chord voicings, styles including several piano comping, bass lines and rhythm variations to choose from. The only play-along that uses functions and chord-chordscales pairings to create the accompaniment track.
Map templates with different styles from Jazz to Traditional Harmony and Contemporary Harmony.

The app comes loaded with jazz workouts, jazz harmony, traditional harmony and jazz standard progressions. Also available on mDecks.com ready to import into the app: 1000+ Jazz Standards Progressions, 1000+ Jazz Standards Reharmonized and The complete Bird Bebop Progressions. All fully analyzed by savvy musicians with tons of experience.

Study Tonal Harmony like never before! Learn all functions and cadences in all keys.
Write your own music using a map that reveals the secrets of tonality.
Use it as a Fake Book on your gig or Practice Improvisation.

You can do all this and much more with Mapping Tonal Harmony Pro. You will not find anything like this on the market today.
This app is a no-brainer for musicians and music teachers.

Some reviews of Mapping Tonal Harmony Pro:
"...This app wins our strongest recommendation for an app so far." - Berklee Groove
"...an app that blew my mind." NoteTreble
"If only Brian Wilson had this music app when he ..." - FeedmyApp
"I've been looking for a harmony/chords/tonal app that is functional, deep enough, and with a great interface. Well, I'm not looking any further. This app just blew me away... " - KVR
"...an App I’d never teach high school (or college) music theory without!"
"An innovation beneficial to students, teachers, and composers alike..." - NoBrainerAppReviews

So, what can you do in Mapping Tonal Harmony Pro?
• Create Harmonic Progressions and Songs.
• Load Chord Progressions, Songs & Jazz Standards.
• Study Harmony from the Beginning, to the most Advanced concepts used by Bach, Beethoven, Bill Evans and John Coltrane.
• Practice Ear Training and Learn Functions in every Key
• Practice Improvisation using it as a Play Along
• Study Jazz Standards
• Study Classical Pieces
• Learn Classical Functional Notation
• Learn Jazz Functional Notation and Arrows and Brackets Analysis
• Study Modulations: Common Tone, Common Chord & Direct
• Learn ALL harmonic functions and cadences in ALL Keys in Major and Minor
• Chord-Scales for every function
• Learn classical concepts such as the Neapolitan 6, the German augmented six, secondary dominants, etc
• Learn jazz concepts such as the SubV7, the related IIm7, the passing half diminished, etc
• Create and Print Scores & Workout Sheets in any key, notated as Chord Progression and/or Functionally
• Transpose the Map to fit your instrument’s transposition
• Balance voices independently and concentrate in the study of Bass-Lines, Inner-Lines and any other combinations
• Work in THREE different modes: Browse Mode, Progression Mode, Audio Mode
• Create Progressions using Song Structure with Section, Repeats, Intros, First Endings and Exits
• Teach your Harmony Class with ease using your favorite audio tracks, performers and composers

🆕 What's New · v10.8.3

The song catalog now include progressions from courses that use Mapping Tonal Harmony Pro for free:
The Art of Reharmonization, The Jazz Practice Workbook (Hank Jones and Wynton Kelly volumes), Bebop Rhythms, Bebop Lines You Should Know and Mastering Pentatonic Lines.

The Jazz Standards add-on now include an entire new volume that parallels The Berklee Real Book.

UI Improvements.

Profile & Insights

Everything we know — and don't — about this app and its company.

Identification

App name
Mapping Tonal Harmony Pro
Developer
MDECKS MUSIC, LLC
Bundle ID
com.mdecks.testar
App Store URL
Open in App Store
Category
News
Content rating
4+
Languages
EN

Company

Website
mdecks.com
Tagline
mDecks Music — Interactive Music Books, Courses & Apps.
Description
Practice paths, interactive PDFs, and apps to help you build a routine, understand harmony, improve voicings & improvisation, and play real tunes.
Founded
Not found
HQ / Address
Not found
Employees
Not found
Logo
Not found

Revenue

Verified revenue / mo
Not found
AI revenue estimate / mo
Not found
AI annual estimate
Not found
ML model estimate / mo
$32.8K/mo
Top-grossing rank
Outside top 100 in US News
All-time revenue
Not found
Pricing
Not found

Founder

Name
Not found
X / Twitter
Not found
LinkedIn
Not found
GitHub
Not found
X followers
Not found
Public statements
Not found

Funding

Total raised
Not found
Last round
Not found
Investors
Not found
Crunchbase
Not found
AngelList
Not found

Press & Links

Articles found
Not found
Listed on
Not found
Blog
Not found
Press / News
Not found

Contacts & Socials

Socials
instagram · youtube
Email
Not found
Phone
Not found
Contact page
Not found
About page
Not found
📈Ratings growth66 ratings+25% lifetimeShow 3-year history estimate ▾Nov 2020Nov 2023May 2026
Tracked (47 weeks) Pre-tracking estimate (35 weeks) · model-based, ±5% noise · anchored to release date and current value
🌍Geographic ReachNot ranked
This app is currently outside the top 100 grossing in all 9 countries we monitor (US, UK, DE, FR, JP, CA, AU, BR, IN). Niche or new apps often launch this way — popularity rankings appear once daily revenue clears the regional threshold.
Profile is built from iTunes Lookup + developer site scrape + ML revenue model. Empty fields show "Not found" — additional sources (Crunchbase, X, IndieHackers, Acquire.com) coming.
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