App Overview

Tunetag MP3 Tag Editor icon

Tunetag MP3 Tag Editor

Justin Xin · Utilities

Edit your MP3 files' tags easily with Tunetag.

$0.99 · In-app purchases

PRICE
$0.99
In-app purchases
BUSINESS MODEL
Paid
No overall Grossing estimate available
RATING
3.9
26 ratings · Top 50%

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 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 Tunetag MP3 Tag Editor: map the core Utilities 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

Add more advanced editing options, such as batch editing and metadata validation.

Assumption to check: Limited editing features compared to desktop counterparts

Validate with people who use this workflow before building.

Hypothesis 2

Implement better error handling and file management.

Assumption to check: Occasional crashes when loading large files

Validate with people who use this workflow before building.

Hypothesis 3

Add support for Google Drive and Dropbox for file access.

Assumption to check: Lack of cloud integration options

Validate with people who use this workflow before building.

Hypothesis 4

Incorporate notifications or confirmations after successful tag edits.

Assumption to check: Limited user feedback on successful edits

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

Edit your MP3 files' tags easily with Tunetag. - File Management Tunetag supports file management directly from the built-in iOS/iPadOS Files app, so you never have to fumble with share sheets or AirDrop.  Move your downloaded MP3 files directly to the Tunetag folder in the 'On My iPhone/On My iPad' folder, and Tunetag will automatically pick them up. If you're not sure where to go, simply tap the 'Open Files App' button in-app. Need to open files and folders from an external folder or drive? Use the Batch Editor to open them. - Tag Editor Tunetag supports editing the following fields in MP3 files: Title, Artist, Album, Album Artist, Year, Track Number, Genre, Composer, Disc Number. You can also select an album art to attach to your MP3 files. Additionally, you can use replacement tokens that use information from a file's file name to fill out tag data. - Batch Editor You can easily edit multiple files at one go, changing only the fields you want to change. The same replacement tokens you can use in the Tag Editor can also be used here. Have many files? Select files or a folder to add them to the Batch Editor, or long press a folder to add files recursively.  You can also drag files from the Files app directly into the Batch Editor. Note: Editing many files at once, or using large album art images may result in longer save times.

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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
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.