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
Latin Rhythm
Latin Rhythm is a practice band in your pocket
$2.99 · In-app purchases
PRICE
$2.99
In-app purchases
BUSINESS MODEL
Paid
No overall Grossing estimate available
RATING
★ 1.0
1 ratings · Below Average
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
Make this idea yours
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 should your app do differently? Your note travels with the kit so your coding agent builds around your idea.
What's included
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 Latin Rhythm: 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
Implement advanced recommendation algorithms and user-driven playlists.
Assumption to check: Limited song discovery features compared to competitors
Validate with people who use this workflow before building.
Hypothesis 2
Enhance audio streaming quality and buffering management.
Assumption to check: Inconsistent audio playback experience
Validate with people who use this workflow before building.
Hypothesis 3
Add sharing options for playlists and tracks on social media.
Assumption to check: Lack of social sharing features
Validate with people who use this workflow before building.
Hypothesis 4
Focus on improving navigation and user interface consistency.
Assumption to check: Subpar user ratings due to UI/UX issues
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
Latin Rhythm is a practice band in your pocket. Slow the music down, isolate any instrument, and learn where the 1 really is. For dancers, musicians and instructors. SALSA IS INCLUDED 35 piano montunos, 26 bass tumbaos and 53 percussion patterns across clave, congas, timbales, bongós, cowbell, maracas and güiro. Both 2-3 and 3-2 clave orientations. MERENGUE RHYTHM PACK (In-App Purchase) 13 piano montunos and 13 bass lines, with tambora, güira and congas in both derecho and pambiche. YOU ARE THE BAND LEADER * Swipe an instrument left or right to change its pattern * Swipe down to mute it, up to bring it back * Press and hold, then slide, to set its volume * Set the tempo and the musical key * An instructor voice counts the beats in English, Spanish, French or German * Silence individual counts so you hear only the ones you are working on MORE GENRES ON THE WAY Other genres are being worked on, stay tuned! If you enjoy the app, please leave a review, it really helps. Problems or feedback? Email [email protected] — I cannot reply to reviews directly. See the end user license agreement at the following link: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/
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.
SUGGESTED BUILD STACK
React Native
Expo
Zustand
axios
react-navigation
expo-av
BUILD KIT DIFFICULTY
Not assessed in a Build Kit yet.
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.
