App Overview

DJ Kartier icon

DJ Kartier

Producer Supply LLC · Music

The DJ Kartier app puts 1,000+ iconic sounds at your fingertips - famous leads, pianos, synths, brass, and drums inspired by chart-topping hits - all playable right on your phone or with the Kartier Piano MIDI Keyboard

Free · In-app purchases

PRICE
Free
In-app purchases
BUSINESS MODEL
Freemium
No overall Grossing estimate available
RATING
3.6
29 ratings · Top 50%

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 included19 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 DJ Kartier: 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

Generous offline download limits

Assumption to check: Can't play offline

Validate with people who use this workflow before building.

Hypothesis 2

Better personalization with explicit feedback

Assumption to check: Algorithm doesn't understand taste

Validate with people who use this workflow before building.

Hypothesis 3

Limited on-demand plays for free users

Assumption to check: Shuffle-only on free tier

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 DJ Kartier app puts 1,000+ iconic sounds at your fingertips - famous leads, pianos, synths, brass, and drums inspired by chart-topping hits - all playable right on your phone or with the Kartier Piano MIDI Keyboard Browse by artist and song, tap a sound, and play. Every preset is sound-designed accurately, with pro controls so you can make it your own. WHAT YOU CAN DO • Play 1,000+ iconic sounds across genres • Easily make full songs with Kartier Studio • Learn piano with interactive lessons • Play games, climb the leaderboards, and level up to new ranks • Use the built-in multi-touch piano • Connect your Kartier Piano via bluetooth for full playability • Watch animated video tutorials for hundreds of presets • Control your Kartier Piano's RGB key lighting - rainbow, custom colors, scale guide, and more LEARN TO PLAY WITH INTERACTIVE PIANO LESSONS Follow falling notes across scales, chords, and classic melodies - from Ode to Joy to Canon in D - on your on-screen piano or a connected keyboard. Get real-time Perfect/Good/Miss feedback and an accuracy score as you play. Start with 2 free lessons, or unlock the full library with Premium. PREMIUM • Monthly, annual (save 50%), or one-time lifetime • Unlocks every sound, with new ones added regularly MADE BY PRODUCER SUPPLY DJ Kartier is the mobile companion to the Kartier Piano - the fastest way to play the sounds you love, whether you're producing, beatmaking, or just jamming. — All sounds are original recordings inspired by various musical styles. Any artist or song references are descriptive only; no affiliation or endorsement is implied. Subscriptions auto-renew unless cancelled at least 24 hours before the end of the period. Manage or cancel anytime in your App Store account settings. Privacy Policy: https://producersupply.com/pages/dj-kartier-app-privacy-policy Terms of Use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/

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 AV
Supabase
RevenueCat
BUILD KIT DIFFICULTY
Advanced

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.