App Overview

RingCraft icon

RingCraft

Stelios Platsis · Music

RingCraft turns your favorite tracks into personal ringtones and alert sounds — simply, quickly and precisely.

$6.99 · In-app purchases

PRICE
$6.99
In-app purchases
BUSINESS MODEL
Paid
No overall Grossing estimate available
RATING
5.0
1 ratings · Top 5%

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 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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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 RingCraft: 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

Offer advanced editing tools like effects, equalization, and multi-track mixing.

Assumption to check: Limited audio editing features compared to desktop software

Validate with people who use this workflow before building.

Hypothesis 2

Introduce a freemium model with basic features for free users.

Assumption to check: High subscription cost without free tier

Validate with people who use this workflow before building.

Hypothesis 3

Simplify navigation and enhance visual hierarchy for better user experience.

Assumption to check: Cluttered user interface

Validate with people who use this workflow before building.

Hypothesis 4

Implement sharing options to allow users to share ringtones via social media.

Assumption to check: Lack of social sharing 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

RingCraft turns your favorite tracks into personal ringtones and alert sounds — simply, quickly and precisely. Import an audio or video file, pick exactly the part you want, and export it ready to use as a ringtone. Features: • Import from audio or video files — videos keep the audio only, no picture. • Set start and end with hundredth-of-a-second precision. • Listen as you adjust: hear the start and end points. • Play the whole track, mark points by ear, and move forward or back within the track. • Smooth fade in and fade out, adjustable. • Full preview of the final sound before exporting. • Name each project — the name becomes the exported file name too. • Save projects to edit later. • iCloud sync: your projects and settings across all your devices. • Export for iPhone or Android, and share instantly — use as a ringtone on iOS. For everyone: RingCraft is designed for everyone to use, with or without sight. It is fully accessible with VoiceOver: every button and slider is announced clearly, with haptic feedback and audio preview that make precise selection easy without looking at the screen. As you adjust the start and end, you hear the music without interruptions — the time is announced when you need it. With the magic tap (a two-finger double tap) you pause and resume playback from anywhere. At the same time, the clean, modern interface is a pleasure for sighted users too. Available in Greek, English, German, French, Spanish and Italian. No data collection: all processing happens locally on your device.

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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 Navigation
Expo AV
Zustand
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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.