App Overview

SuperMetronome Groovebox Pro icon

SuperMetronome Groovebox Pro

Lumbeat · Music

The best metronome for iPhone, is also an intuitive and powerful groove box / drum machine with high definition sounds and an amazing tempo practice tool, now with Audiobus compatibility!

$6.99 · In-app purchases

PRICE
$6.99
In-app purchases
BUSINESS MODEL
Paid
No overall Grossing estimate available
RATING
4.5
190 ratings · Top 15%

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 included18 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 SuperMetronome Groovebox Pro: 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

Allow users to create custom patterns with more flexibility.

Assumption to check: Limited customization options for rhythm patterns.

Validate with people who use this workflow before building.

Hypothesis 2

Integrate more sound options and effects.

Assumption to check: No advanced sound options.

Validate with people who use this workflow before building.

Hypothesis 3

Enable users to share their patterns and settings.

Assumption to check: Lack of social sharing features.

Validate with people who use this workflow before building.

Hypothesis 4

Offer a more competitive pricing model with a free tier.

Assumption to check: High price point for premium 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

The best metronome for iPhone, is also an intuitive and powerful groove box / drum machine with high definition sounds and an amazing tempo practice tool, now with Audiobus compatibility! Very easy to use, you can set any measure, rhythm, drum beat or pattern quickly. A little versatile drummer in your phone. The last update includes amazing tools for any musician to practice tempo, groove and a new design. " Beat Hider " is an excellent practice to improve inner tempo. Set any Beat / Hide measures pair and try to keep tempo while the beat is hided. When the rhythm is back you should been playing at the same tempo. If you can do it with the 8/8 pair or 2/6 you are a proper groove master. " Progressive Tempo " is a fantastic tool to practice technique, tempo, or difficult passages. Fast and easy to set, you can play faster or slower times progressively establishing the number of measures for a change and the increase BPM number. Also you can loop back, repeat the progression from the start BPM or even keep the last tempo to keep playing. - Inter-App Audio and Audiobus 2 compatibility. - No Ads. - Three multilayer sound tracks. - Create your own sound bank, percussion kit or drum kit. - High-definition multilayer quality sounds, samples from real instruments like acoustic metronome clicks, digital clicks, bass drums, congas, triangles, tambourines, hihat, toms, ride cymbals, latin percussion, blocks, claves, claps, bells, snare drum, cowbells, sticks, shaker ... - Tap tempo, detects the Beats per Minute by pressing a button. - More than 100 grooves where you can find Beat, Pop, Rock, Funk, Shuffle, Latin, Songo, Bembe, D&B, Rhumba ... They all are editable and programmable. - Combine all these rhythms and grooves with the HD high quality sounds. - Stays perfectly tight all the time - Visual Tempo. - Practice tempo in a musical way. - 20 to 300 Beats per minute. - Count In Button - Supermetronome GrooveBox uses audio files with optimal audio resolution: 44100 Hz sample rate and 16 Bits. - Allow 5 Subdivision for Jazz swing feel. - Set On / Off or edit pattern for the Vibrator track on the way. The perfect tool for any guitarist, bassist, keyboardist, pianist, singer, drummer, percussionist or trumpet player. Now you can have a rhythm factory in your pocket. - Choose the number of beats and subdivisions. - Select a groove, a sound bank and a pattern to the vibrator moving the wheels. You can enable or disable the sound or vibration pressing the buttons, or edit each one with the editor. - Let's Rock

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
Zustand
react-navigation
expo-av
react-native-slider
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.