App Overview

Rhythm Pro: tempo trainer. icon

Rhythm Pro: tempo trainer.

Alexey Ovod · Music

"Rhythm MIDI" is the professional version of the rhythm training application

$4.99 · In-app purchases

PRICE
$4.99
In-app purchases
BUSINESS MODEL
Paid
No overall Grossing estimate available
RATING
4.8
56 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 included17 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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Good fit for mobile-first iOS and Android prototypes with managed app scaffolding.

// RORK SYSTEM PROMPT
Rork plan preview for Rhythm Pro: tempo 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 new exercises regularly and allow user-generated exercises.

Assumption to check: Limited exercise variety can lead to user boredom.

Validate with people who use this workflow before building.

Hypothesis 2

Add visual feedback or snapping to common tempos.

Assumption to check: Difficulty in adjusting tempo accurately.

Validate with people who use this workflow before building.

Hypothesis 3

Enable offline caching of popular exercises.

Assumption to check: No offline access to exercises.

Validate with people who use this workflow before building.

Hypothesis 4

Implement social sharing to encourage user engagement.

Assumption to check: Limited social sharing features.

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

"Rhythm MIDI" is the professional version of the rhythm training application. This version of the application supports midi controller and it is possible to switch between different types of exercises. The application is designed for adults who want to improve their sense of rhythm and musical skills. The aim of the app is to develop a sense of rhythm, to play accurately by rhythmic patterns and to use a metronome. The exercises are designed to help you gradually learn to recognize and play rhythmic patterns. In the application settings, you can choose the level of difficulty of tasks and the musical instrument you play. You can choose guitar, piano, drums. With the professional version of our application, you will be able to: - learn to read musical notes; - accurately play rhythm by rhythmic patterns; - develop musical and rhythmic hearing; - use midi controller; ## What is MIDI? MIDI (Musical Instrument Digital Interface) is a standard protocol for electronic musical instruments, computers and other equipment to communicate and synchronize with each other. A MIDI controller is an essential tool for every musician. With a midi controller, you can play virtual instruments, control recording software, and even manipulate effects. ## Why use a MIDI controller with our app? You can use the app without a midi controller, but we recommend that you use it with one. MIDI controller allows you to experience real-time response from the application. Playing a real musical instrument will help you develop the right musical sense of rhythm more easily. The app is suitable for both beginners and professional musicians.

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Screenshots

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Build scope

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Define the first version

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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.

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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.