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
Voice Through
Created in collaboration with GamingFilterPro, the creator of the viral "Perfect Pitch Challenge" filter - a social media singing challenge that reached over 10 billion views! From artists to celebrities, influencers ...
$0.99 · In-app purchases
PRICE
$0.99
In-app purchases
BUSINESS MODEL
Paid
No overall Grossing estimate available
RATING
★ 4.4
44 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 included15 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.
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 Voice Through: map the core Games 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
Introduce user-generated content and daily challenges.
Assumption to check: Lack of variety in challenges
Validate with people who use this workflow before building.
Hypothesis 2
Add multiplayer mode and friend invites.
Assumption to check: Limited social features
Validate with people who use this workflow before building.
Hypothesis 3
Implement a leveling system and achievements.
Assumption to check: Repetitive gameplay
Validate with people who use this workflow before building.
Hypothesis 4
Optimize audio loading and buffering.
Assumption to check: Occasional audio playback 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
Created in collaboration with GamingFilterPro, the creator of the viral "Perfect Pitch Challenge" filter - a social media singing challenge that reached over 10 billion views! From artists to celebrities, influencers and music creators, millions have taken on this addictive musical challenge. Master your pitch and train your voice as you sing your way through a series of note walls! Hit the perfect notes to guide a ball in this unique musical training game that makes practice fun. Key Features: 1. Train your vocal pitch control while playing - sing higher or lower to move the ball 2. Challenge yourself through walls that test different musical notes 3. Perfect for music lovers and aspiring singers of all ages - no experience needed 4. Pilot your aircraft using voice pitch to soar through rings! 5. A fun game that challenges you to master Mandarin fruit pronunciation by correctly naming fruits! 6. Control the waves with your pitch and volume to help Iason get the Golden Fleece. 7. More exciting musical mini-games coming soon in regular updates!
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
Supabase
React Navigation
Zustand
expo-av
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.
