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.
App Overview
OkeMaker
USE ANY SONG AND ANY LYRICS
$0.99 · In-app purchases
PRICE
$0.99
In-app purchases
BUSINESS MODEL
Paid
No overall Grossing estimate available
RATING
★ 3.8
6 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 included18 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.
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
Good fit for mobile-first iOS and Android prototypes with managed app scaffolding.
// RORK SYSTEM PROMPT
Rork plan preview for OkeMaker: map the core Entertainment 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
Expand the library with user-generated content or partnerships.
Assumption to check: Limited song selection for karaoke tracks.
Validate with people who use this workflow before building.
Hypothesis 2
Optimize audio processing for smoother performance.
Assumption to check: Moderate app performance during audio recording.
Validate with people who use this workflow before building.
Hypothesis 3
Incorporate sharing options to social media platforms.
Assumption to check: Lack of social features for sharing tracks.
Validate with people who use this workflow before building.
Hypothesis 4
Allow users to customize audio effects or backgrounds.
Assumption to check: Limited customization options for tracks.
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
USE ANY SONG AND ANY LYRICS Use any song in your music library* or import any song, including songs you create in GarageBand or rip from CDs. Then enter the lyrics and synchronise them to the music! CUSTOMISE YOUR VIDEOS You customise the font, the colours, the position of the text, the background, and more. RECORD YOURSELF SINGING You can add a video* of yourself singing along! Or record a video of anything you'd like. SHARE YOUR VIDEOS Share** your completed videos with friends and family (or anyone!). You can also share the project file directly so others can benefit from your work and save time creating their own karaoke videos. USE FUNNY LYRICS Make funny or clever changes to the lyrics to have a laugh. CREATE KARAOKE VIDEOS OF YOUR OWN SONGS Musicians, bands, and songwriters can create karaoke videos of their own songs for fun or for their fans. No subscriptions, ads, or in-app purchases. * Exporting your karaoke videos and adding videos of yourself singing is only possible with unprotected songs in your library or imported songs. ** Copyright limitations may apply.
Written user reviews are not shown here. Check current App Store reviews >
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
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.
