App Overview

Steel Guitar PRO icon

Steel Guitar PRO

Yonac Inc. · Music

Steel Guitar PRO is a highly advanced guitar processor that combines cutting-edge realtime audio generation with a truly expressive control interface

$9.99 · In-app purchases

PRICE
$9.99
In-app purchases
BUSINESS MODEL
Paid
No overall Grossing estimate available
RATING
4.5
67 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 included20 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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> SELECT BUILD PLATFORM:

Good fit for mobile-first iOS and Android prototypes with managed app scaffolding.

// RORK SYSTEM PROMPT
Rork plan preview for Steel Guitar 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.
            

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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

Include more gamification elements to enhance user engagement.

Assumption to check: Limited interactive features compared to other music apps

Validate with people who use this workflow before building.

Hypothesis 2

Simplify the subscription explanation and provide clearer trial information.

Assumption to check: Subscription paywall can be confusing

Validate with people who use this workflow before building.

Hypothesis 3

Add more genres and customizable backing tracks.

Assumption to check: Less diverse backing track options

Validate with people who use this workflow before building.

Hypothesis 4

Incorporate social sharing and community forums for users to interact.

Assumption to check: Lack of community 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

Steel Guitar PRO is a highly advanced guitar processor that combines cutting-edge realtime audio generation with a truly expressive control interface. It provides many unique guitar models, built-in amps & FX processing, MIDI control, AUv3, and wide-ranging customizability. :: Control Surface :: Steel Guitar PRO features a powerful yet familiar control interface. Simply touch the strings to “pick,” and drag the slide bar to modulate pitch. By enabling enhanced slide control, you can even use multiple touches to tilt the slide bar, or dampen the strings. Fretboard dimension, string spacing, and pick guard size are all configurable. A high level of resolution enables minute pitch control and realistic vibrato. Settings let you vary guitar tone, sustain and release times, touch behavior, slide bar auxiliary control, handedness, and more. :: Guitars :: Steel Guitar PRO provides you with an arsenal of guitars to choose from: unique examples of humbuckers, single coils, P90s, and more. Instruments include many 6 string guitars, as well as 8- and 10-string steel guitar variants. Each family of instruments comes with many tuning to choose from, but you can also create and save your own. In addition, you have up to seven virtual “pedals” to bend individual or collections of string — much like a pedal steel. The pedals can be actuated by slightly tilting the device, or via MIDI, or even with the fretting touch. All of this is configurable by the user. :: Built-In FX Processing :: Steel Guitar PRO incorporates a virtual signal chain where you can put amps and FX in any combination. The included dozen amps and 20 FX are all custom tuned to evoke the best tones from the guitar processor. Each amp or effect features multiple parameters to precisely modify its tone and feel. These parameters are MIDI-mappable, so that you can control them via an external device. The amp collection covers a broad spectrum from bell-like cleans to thick overdrive. The FX include many analog inspired “pedals” that range from overdrives, distortions, mods, delays, reverbs, to beyond. :: AUv3 & MIDI :: Steel Guitar PRO can also be used as an AUv3 MIDI plugin. We developed a custom MIDI sub-protocol so that Steel Guitar PRO and its powerful control interface can run seamlessly inside an AUv3 host. You can also use a traditional MIDI keyboard or device to play Steel Guitar PRO, which readily accommodates MIDI pitch & mod wheels, and key velocity as well. :: Useful Features :: Steel Guitar PRO includes a comprehensive preset management system that allows you to save, modify, and share any number of your “rigs.” The standalone app also includes a handy “tape deck” where you can record, play, loop and import/export audio. MIDI learn feature is easy and intuitive to use, but also offers deeper customization. All audio processing is done in the highest resolution, natively and without resampling at rates up to 96kHz. The fluid user interface integrates readily with many different AUv3 hosts.

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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.

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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.