App Overview

Ear Trainer icon

Ear Trainer

thoor software AB · Music

With an overall 4.8 out of 5 rating in it is a must to try out this ear training app.

$7.99 · In-app purchases

PRICE
$7.99
In-app purchases
BUSINESS MODEL
Paid
No overall Grossing estimate available
RATING
4.8
1,200 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.

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What's included18 files

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

  • START_HERE
  • AGENTS
  • EVIDENCE
  • SPEC
  • BUILD_PLAN
  • DIFFERENTIATION
  • skills/
  • screens/
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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.

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> SELECT BUILD PLATFORM:

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

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

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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

Introduce more diverse exercises and user-generated content.

Assumption to check: Limited exercise variety may lead to boredom.

Validate with people who use this workflow before building.

Hypothesis 2

Simplify the navigation and display elements more clearly.

Assumption to check: Users may find the interface cluttered.

Validate with people who use this workflow before building.

Hypothesis 3

Implement adaptive difficulty based on user performance.

Assumption to check: Difficulty levels might not cater to all users.

Validate with people who use this workflow before building.

Hypothesis 4

Add leaderboards and sharing options to enhance engagement.

Assumption to check: Lack of social features for competition.

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

With an overall 4.8 out of 5 rating in it is a must to try out this ear training app. What our users says: Awesome ear training app ***** One of the most in depth apps out there for ear training and a easy to use interface. You can even make your own exercises. I wish you could undo a note entry in the melodic exercises, a lot of the times iv just pressed the wrong note because of my fat fingers but I guess it’s part of the challenge to not make a mistake(wish you could change it in the settings or something). Still a must buy for ear training. Guy ***** You guys deserve 1000000 stars thank you Everything You Need **** It took a while for me to appreciate this app. It wasn't until I had a bit of ear training done that I could see the limitations in other apps and how this one would take me further and teach more of what I could actually use versus simpler apps. Once I could hear intervals up to an octave and major vs minor chords, this app had plenty more for me to study. Great app. ---- Listening is the most important skill in music, and this app will help you to listen better. Ear Trainer is an educational tool designed for musicians, music students and anyone interested in improving ones musical ear. It has over 260 individual exercises that are conveniently placed into nine different areas of study. It is also possible to create custom exercises so that you can practice exactly what you need. No need to be an expert, Ear Trainer is suitable for all users from beginner to very advanced. No matter what level your musical hearing skills are, Ear Trainer will help to hone them. * Built-in Exercises * - Interval Comparison (48 different exercises) - Interval Identification (30 different exercises) - Chord Identification (48 different exercises) - Chord Inversions (24 different exercises) - Chord Progressions (25 different exercises) - Scales (24 different exercises) - Note relative to chord (18 different exercises) - Relative Pitch (12 different exercises) - Melody Exercises (38 different exercises) Each exercise has a short description of its purpose and optional preview. A virtual piano keyboard and note view in each exercise helps you visually understand and analyze the notes that have been played. To aid your progression you can compare the different options after answering. (You can even play the virtual piano if you like!) As you work through the exercises, statistics are collected so that you can see your progress. The questions in the exercises are randomly generated so you can do them over and over again as many times as you like to continue to hone your skills. * Custom Exercises * Users can create their own custom exercises to match their desired areas of study and/or skill level. The following areas are available for custom exercises: - Interval Comparison - Interval Identification - Chord Identification - Chord inversion - Chord Progression - Scale Identification - Note after chord * Share Custom Exercises * Custom exercises can be shared with friends and class mates through Email, AirDrop and iMessage. What our users says: ------ ***** Must Have!!! This is the best Ear Trainer of all I tried in App Store, everything works just perfectly. If you are interested in improving your musical hearing you must have it. ------ ***** Amazing I have been using this app every day for just about a year now and the result are simply amazing. ------ **** I'm in my second third semester as a music major and I have to say, this is a great app for any music major, or anyone looking for ear training. I like that I'm able to switch between different instruments, it makes hearing the notes on the instrument you're use to a bit easier for me. ------ For more information please see: www.dev4phone.com

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Screenshots

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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
React Navigation
axios
expo-av
Zustand
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.