App Overview

Chomplr icon

Chomplr

MSXII Sound Design · Music

The Chomplr name is taken from sample "Chopping Rompler", inspired by the timeless workflow of creating music using samples to make new works

$1.99 · In-app purchases

PRICE
$1.99
In-app purchases
BUSINESS MODEL
Paid
No overall Grossing estimate available
RATING
4.0
102 ratings · Top 30%

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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Build Kit

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

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Combine features and design from your favorite apps.

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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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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 Chomplr: 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

Add more advanced audio effects and manipulation options.

Assumption to check: Limited audio manipulation features compared to professional software.

Validate with people who use this workflow before building.

Hypothesis 2

Optimize app performance for lower-end devices.

Assumption to check: Inconsistent performance on older devices.

Validate with people who use this workflow before building.

Hypothesis 3

Incorporate social media sharing features.

Assumption to check: No social sharing options.

Validate with people who use this workflow before building.

Hypothesis 4

Implement personalized recommendations and trending sample sections.

Assumption to check: Limited discovery features for new samples.

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 Chomplr name is taken from sample "Chopping Rompler", inspired by the timeless workflow of creating music using samples to make new works. As of version 1.2.0, you can now import your own samples into Chomplr. Chomplr brings a new iOS approach to creative sample manipulation. As a standalone module or AUv3 plugin, Chomplr offers quick access to it's robust sample library and an online store is built in. Samples for use within Chomplr are royalty free. Sample data can be edited and one or more effects added and adjusted in quick and simple fashion. While a wealth of parameters are provided, the true user experience and inspiration comes from slicing, tweaking and editing while playing by ear.  Chomplr installs as an iOS AUv3 plugin instrument, compatible for use within host apps such as Garageband, Beatmaker 3, Cubasis, Audiobus, AUM, iMPC, and more. Key Features: • Unique sample chopper for iOS music making • Includes both standalone and AUv3 (plugin) capability • Compatible with Garageband, Beatmaker 3, AUM, Audiobus, Cubasis, Nano Studiok, iMPC, and many more hosts • Stock library of over 150 original, award winning samples by MSXII Sound Design. All royalty free within Chomplr. • Built-in store with hundreds of samples to preview & purchase • Stock FX such as Lofi, Echo, Flanger, LP & HP filters, Drive, Reverb & Dirt • Chromatic sample mode allowing a sample chop to be played across keys • Sample editing parameters, per chop, such as Start, End, Attack, Release, Tune, Vol, Pan, Loop, and Reverse • A comprehensive user manual available at: msxaudio.com/pages/iosapps • Robust roadmap that includes many features to come! Series of Chomplr videos to get you going: https://www.youtube.com/playlist?list=PLTD5F5uQpHAvUctTuQyROmMlkKZo9guGj Info on all MSXII Sound Design Apps: https://www.msxaudio.com/pages/iosapps Join the user forum for tips/tricks/support: https://www.msxaudio.com/community/chat Visit us: https://msxaudio.com Peace, love, & blessings to all. Thank you for checking out Chomplr.

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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
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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.