App Overview

Elastic Melody icon

Elastic Melody

Oliver Greschke (DE) · Music

Elastic Melody is a standalone iOS application and AUv3 plugin with 3 channels of synthetic sounds, an analog style step sequencer and 4 master effects

$8.99

PRICE
$8.99
No in-app purchases
BUSINESS MODEL
Paid
No overall Grossing estimate available
RATING
4.7
10 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.

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

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What's included16 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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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 Elastic Melody: 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

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

Elastic Melody is a standalone iOS application and AUv3 plugin with 3 channels of synthetic sounds, an analog style step sequencer and 4 master effects. Almost all parameters can be automated and thus changed in an „elastic way“. The focus of Elastic Melody is on a fast and intuitive creation of melodies with a basic analog sound. Elastic Melody comes with a bunch of presets from well-known sound designers of the iOS scene, like "Sound of Izrael", "Red Sky Lullaby", "Nu-Trix", "JaKob Haq", "Another Machines" and others. Features: SYNTHESIZER / SEQUENCER – 3 channels, each with an analog synthesizer that is connected to an associated sequencer – Each sequencer channel has its own start/end and timing parameters for notes and automation – 14 parameters per synth engine (waveform, lowpass, highpass, env, etc.) – For each parameter, value changes can be drawn in an automation window – Solo or mute function for the 3 synth channels – Song Mode: Create easily longer sequences with setting pattern repeat and duplicating and altering a pattern MASTER FX – 4 master effects (EQ, Chorus, Delay, Reverb) – Automation for most parameters of the effects – Each FX effect has its own start/end and timing parameters for automation SONG MODE - Arrange several Pattern to a longer sequence ... a Song - Repeat count for Song Elements/Pattern - Duplicate/Rename/Delete function for Pattern and Song Elements FUNCTIONS – Undo/Redo – Various randomise functions – option to share and import presets – AUv3 support – Ableton Link support

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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 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.