App Overview

ScaleMate - Visualize Harmony icon

ScaleMate - Visualize Harmony

Anton Schwartz · Music

ScaleMate is a modern, interactive reference to jazz harmony.

$3.99 · In-app purchases

PRICE
$3.99
In-app purchases
BUSINESS MODEL
Paid
No overall Grossing estimate available
RATING
4.8
21 ratings · Top 5%

Evidence scope: No current overall US chart position is available. Category-chart positions shown in discovery are a separate scope. Revenue is a directional model estimate, not verified earnings.

Build your own version

Build Kit

Make this idea yours

A product spec, screen plans, and build steps for your coding agent.

First kit free with a verified email

Add to a Remix

Combine features and design from your favorite apps.

Kit ready. Verify your email to download it.

What's included17 files

A product spec, phased build plan, differentiation notes, and screen references.

  • START_HERE
  • AGENTS
  • EVIDENCE
  • SPEC
  • BUILD_PLAN
  • DIFFERENTIATION
  • skills/
  • screens/
Preview a sample Build Kit No email needed

Illustrative example: an invoice app for independent contractors. Your kit is tailored to the app you choose; this is not its generated content.

Feature spec

Goal: Send a clear invoice after finishing a job.

  • Add a client, line items, a due date, and payment instructions.
  • Preview the total before exporting a PDF.
  • Keep an editable draft if export fails.

Screen plan

Invoice editor: Client at the top, editable line items in the middle, total and preview action at the bottom.

States: Empty draft, validation errors beside each field, exporting, and a retry action that preserves the draft.

Differentiate and validate

Hypothesis: Contractors need faster repeat invoices more than more templates.

First experiment: Test duplicating a previous job with five contractors. Watch where they hesitate before expanding the feature set.

The full kit adds a phased build plan, evidence notes, tool prompts, and implementation guidance. It is a plan for your coding agent, not a finished app.

Usage: Mechanics are fair game; never reuse the original name, branding, assets, or verbatim copy.

JavaScript is required to complete mailbox verification.

Free quick prompt For a smaller starting point

Quick prompt

> SELECT BUILD PLATFORM:

Good fit for mobile-first iOS and Android prototypes with managed app scaffolding.

// RORK SYSTEM PROMPT
Rork plan preview for ScaleMate - Visualize Harmony: map the core Music workflow, choose the smallest differentiated feature set, define the data and monetization boundaries, then prototype the riskiest user journey first.
            

Preview ready. Verify your email to reveal and copy the full prompt.

JavaScript is required to complete mailbox verification. Return to this prompt preview.

Continue in Rork copies the full prompt to your clipboard first, then opens Rork in a new tab.

Continue in Rork >

Affiliate link: CloneChart may earn a commission at no extra cost

Opportunities

AI-GENERATED OPPORTUNITY HYPOTHESES

These are generated suggestions, not verified review quotations. Check current App Store reviews and speak with users before treating a possible gap as a requirement.

Hypothesis 1

Offer more scales and user-generated content.

Assumption to check: Limited scale options for users

Validate with people who use this workflow before building.

Hypothesis 2

Integrate social sharing to enhance user engagement.

Assumption to check: No social sharing features

Validate with people who use this workflow before building.

Hypothesis 3

Implement dynamic visualizations based on user interaction.

Assumption to check: Static visualizations may become repetitive

Validate with people who use this workflow before building.

Hypothesis 4

Enable offline access to previously downloaded scales.

Assumption to check: Lack of offline functionality

Validate with people who use this workflow before building.

App evidence

Original App Store material. Ratings and screenshots describe the existing app, not proof of demand for your version.

App Store description

ScaleMate is a modern, interactive reference to jazz harmony. ScaleMate lets you… HEAR SCALES conventionally or as random melodies. VISUALIZE SCALES in deep ways that correspond to how you need to think of them. READ & LEARN with built-in expert scale write-ups & use tips. MANIPULATE SCALES while you listen. Hear the changes instantly to understand how scales differ. ————————————————— ScaleMate is a reference that shows you & plays for you any scale you wish…. But that's just the beginning. ScaleMate helps you hear & understand scales and harmony more deeply… by teaching you to visualize scales in ways that match what they sound like. Imagine… Wouldn't it be nice to have a single image to understand all the modes of the major scale? Ever wonder why the modes are ordered so oddly, hopping between major & minor & dominant? Or notice that the Altered Scale is the "darkest", most minor sounding of all possible dominant scales? Or that its tritone-substitution, the Lydian Dominant Scale, is the "brightest" of them all? Ever notice that the minor pentatonic scale is a mode of the major pentatonic scale and wonder whether there were any other useful pentatonic modes? Ever notice that the major pentatonic scale (and its modes) are the only 5-note scale that doesn't contain any half steps or tritones? ScaleMate shows you scales in a way that makes these observations natural and immediate… and plays you the results too. Or ever just wonder what the definition of a dominant chord is and which common scales can be used for them? ScaleMate's got you covered. ——————— FEATURES ——————— USE IT RIGHT AWAY Use ScaleMate right now! Built-in help is there for you whenever you want it. LISTEN ScaleMate lets you hear what scales sound like, by playing them up & down, or by playing random melodies that use them. VISUALIZE WHAT YOU HEAR ScaleMate shows every scale both linearly (for melodic understanding) and on the circle of fifths (for harmonic understanding). FULL LIBRARY OF SCALES ScaleMate knows all the scales you're ever likely to encounter. A WELLSPRING OF KNOWLEDGE Extensive info pages on 60+ of the most common & important scales, including practical advice and usage tips. (Over 15,000 words of content.) USE IT TO TEACH ScaleMate is perfect for projecting on a screen or sharing over zoom while you teach. Its animations let you show how one scale transforms into another, and it has special features (pointing, hiding/revealing) for educators. AUTOMATIC SCALE RECOGNITION Build your own scales and ask yourself "what if I make this change…" Whenever you produce a conventional scale, ScaleMate will automatically identify it for you by name and tell you about it. ANIMATED IN FRONT OF YOUR EYES Change between one scale and another and see the differences between them, visually animated before you. SMART SPELLING ScaleMate notates perfectly, for every scale in every key. NOTE ROLES Next to each note, ScaleMate displays its function—in numbers (3, 5, b7) or in solfege (Mi, Sol, Te) or not at all, according to your preference. SIMPLE OR ADVANCED NOTATION ScaleMate shows you double flats and double sharps whenever they're called for… unless you'd rather see simpler note names. Prefer never to see notes like Cb and E#? You can have ScaleMate show them as B and F. DIMINISHED HARMONY Choose the option to color the notes in three colors so you can see which diminished seventh chord every note belongs to. Great for understanding diminished scales & chords and seeing how they relate to other scales too. JAZZ CRED ScaleMate is created by Anton Schwartz. An award-winning saxophonist & composer as well as an expert educator, he is also the creator of the highly rated RANDOM ROOTS app. Terms and conditions: https://scalemate.app/terms-conditions Privacy policy: https://scalemate.app/privacy

Written user reviews are not shown here. Check current App Store reviews >

Screenshots

< Scroll to see more >

Build scope

Plan a focused first version with your coding agent. These are planning assumptions, not a delivery guarantee.

Define the first version

Choose one audience and one core workflow. Use the kit to agree on its screens, data, and acceptance criteria before building.

Set boundaries

Decide which secondary features, integrations, and platform support can wait. Your version does not need to reproduce everything in the original.

Check the hard parts

Validate external services, specialist technology, data access, and ongoing costs for your chosen scope.

SUGGESTED BUILD STACK
React Native
Expo
Supabase
react-navigation
expo-av
react-native-reanimated
BUILD KIT DIFFICULTY
Intermediate

From the Build Kit assessment.

A reliable timeline needs an agreed scope and a technical check. Ask your agent to estimate the phases in BUILD_PLAN.md after that review.