App Overview

Earphone only alarm icon

Earphone only alarm

SHUNJI KUSAKA · Business

【A private alarm that won’t disturb others】

$0.49 · In-app purchases

PRICE
$0.49
In-app purchases
BUSINESS MODEL
Paid
No overall Grossing estimate available
RATING
N/A
No ratings yet

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 included17 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 Earphone only alarm: map the core Business 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

Implement a clear alert that notifies users when earphones aren't connected.

Assumption to check: Users struggle with alarms not ringing when earphones are not connected

Validate with people who use this workflow before building.

Hypothesis 2

Allow users to customize snooze duration and alarm tones.

Assumption to check: Limited customization options for alarms

Validate with people who use this workflow before building.

Hypothesis 3

Provide a simple interface to easily edit or delete multiple alarms.

Assumption to check: Difficulty in managing multiple alarms

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

【A private alarm that won’t disturb others】 This app plays the alarm sound **only when earphones are connected**, so you never have to worry about embarrassing or disturbing moments when the speaker accidentally blasts a sound. Whether you're on a train, in the library, or at work— you can safely set an alarm just for yourself. ◆Key Features ・Plays alarm sound only through connected earphones ・No sound will be played if earphones are disconnected; notification and message will be shown instead ・When app is open, alarm will automatically play at the set time ・When app is closed, a silent notification and device vibration (if enabled in iPhone settings) will notify you ・No sound will ever play from the speaker; the notification uses a silent audio file 【Important Notes】 ・Due to iOS limitations, alarm sounds cannot be played while the app is closed or in background ・In such cases, only a notification and vibration (depending on iPhone settings) will alert you ・Vibration requires “Settings → Sounds & Haptics → Play Haptics in Silent Mode” to be enabled ・Notification uses a silent sound file; no speaker sound will be output ・We recommend keeping the app open to ensure alarm sound functionality 【For Safe Use】 ・Enable vibration in iPhone “Settings → Sounds & Haptics” ・Always check that your earphones are securely connected ・Disable power-saving or app restrictions that may affect alarm operation This app is designed for anyone who wants a personal alarm without disturbing others. Stay safe and confident wherever you go.

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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
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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.