App Overview

SongCapsule icon

SongCapsule

Sorcererhat · Music

SongCapsule is an app to rediscover your music library and works like your personal DJ

$4.99 · In-app purchases

PRICE
$4.99
In-app purchases
BUSINESS MODEL
Paid
No overall Grossing estimate available
RATING
4.3
193 ratings · Top 30%

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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What's included19 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 SongCapsule: 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

Enhance recommendations and introduce social sharing.

Assumption to check: Limited song discovery features

Validate with people who use this workflow before building.

Hypothesis 2

Implement offline downloads for saved songs.

Assumption to check: Lack of offline playback

Validate with people who use this workflow before building.

Hypothesis 3

Add features for sharing playlists and songs on social platforms.

Assumption to check: No integration with social media

Validate with people who use this workflow before building.

Hypothesis 4

Improve subscription clarity and value proposition.

Assumption to check: Monetization frustration

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

SongCapsule is an app to rediscover your music library and works like your personal DJ. It’s available on your iPhone, iPad, Mac, and Apple Vision Pro with a single purchase. Using SongCapsule is super easy: all you need to do is connect the app to your music library — it supports Apple Music, iTunes Match, or local synced songs in your device. SongCapsule will locally scan your songs and automatically create mixes and playlists for you based on your favorite artists, genres, and even decades. With Magic DJ, you can create mixes of artists and genres with different algorithms, like playing more of your top songs or rediscovering hidden gems in your music library. It’s like a shuffle mode — but more intelligent and tailored just for you. SongCapsule will learn and send a #tbt notification every week to remember you of songs you once loved, but haven’t played for a while. There’s also a special playlist and widget with your forgotten songs. FEATURES • Magic DJ with three different configurations • Playlists • Apple’s Music app integration • Siri Suggestions and Shortcuts • Sharing now playing songs on Instagram, Threads and X with a beautiful card image • CarPlay support • AirPlay 2 • Light and Dark Modes • Widgets (including a Lock Screen widget for iOS 16) • Wind Down support (for iOS 14 and 15) • Privacy built-in • Full iPad and Mac support To learn everything that SongCapsule can do, visit sorcererhat.com/support/songcapsule. IMPORTANT SongCapsule requires a music library with at least 100 songs added to it. Subscribed playlists don’t count.

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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
Supabase
react-native-reanimated
expo-av
expo-router
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.