App Overview

SubZone icon

SubZone

Sonic Baume LTD · Entertainment

Experience unparalleled sound quality with SubZone - the ultimate app for optimizing your subwoofer's position

$2.99 · In-app purchases

PRICE
$2.99
In-app purchases
BUSINESS MODEL
Paid
No overall Grossing estimate available
RATING
4.5
22 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 included17 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 SubZone: map the core Entertainment 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

Expand language offerings to attract more users.

Assumption to check: Limited subtitle language options

Validate with people who use this workflow before building.

Hypothesis 2

Optimize video streaming for better performance.

Assumption to check: Occasional buffering issues

Validate with people who use this workflow before building.

Hypothesis 3

Conduct thorough testing on various devices to ensure consistency.

Assumption to check: Inconsistent user experience across devices

Validate with people who use this workflow before building.

Hypothesis 4

Introduce features for user reviews and recommendations.

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

Experience unparalleled sound quality with SubZone - the ultimate app for optimizing your subwoofer's position. Simply enter the details of your room and listening position, and our advanced acoustic simulation will find the sweet spot. The result is clear, well-defined, deep bass that brings the very best out of music and movies. When sound waves reflect off the walls, ceiling, and floor of a room they produce "room modes". These affect the sound by boosting or cutting certain frequencies, making some sound too boomy and others not present enough. To get the best performance out of your subwoofer, it is important to position it in a location that minimizes the effect of room modes. Previously, finding the best place to put a subwoofer has involved trial-and-error or expensive acoustic software. Some even suggest crawling around on your hands and knees to listen for the best spot. Now, SubZone allows you to calculate the optimal position in a scientific and affordable way from the comfort of your seat. Key features: - Supports any rectangular-shaped room - Simulates the acoustic effect of placing your subwoofer in each possible zone of your room - Calculates a score out of 10 for how well each zone performs - Recommends the optimum zones, marked with a star - Plots the frequency response for each zone, showing which frequencies are boosted/cut and by how much - Can optimize to a specified frequency range - Supports optimization for multiple listening positions - Uses information about the construction materials of the room to improve the accuracy of the simulation - Simple interface with step-by-step guide - No account or sign-in required - Respects your privacy by storing data locally - Detailed documentation with a comprehensive FAQ - Expert support on-hand to handle any questions or issues - Dark and light color schemes - Complies with GDPR legislation

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
Supabase
react-navigation
@supabase/supabase-js
react-native-video
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.