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
Truth AI: Voice Analyzer
Voice Lie Detector – Truth or Lie Game (Offline)
$2.99 · In-app purchases
PRICE
$2.99
In-app purchases
BUSINESS MODEL
Paid
No overall Grossing estimate available
RATING
N/A
No ratings yet
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/
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 Truth AI: Voice Analyzer: 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
Implement advanced AI algorithms for better accuracy.
Assumption to check: Limited accuracy in voice analysis results.
Validate with people who use this workflow before building.
Hypothesis 2
Simplify the subscription process with clear explanations.
Assumption to check: In-app purchases can be confusing.
Validate with people who use this workflow before building.
Hypothesis 3
Incorporate user feedback options to improve future updates.
Assumption to check: Lack of user feedback mechanisms.
Validate with people who use this workflow before building.
Hypothesis 4
Enable offline recording and analysis for better user experience.
Assumption to check: No offline functionality.
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
Voice Lie Detector – Truth or Lie Game (Offline) Voice Lie Detector is a fun and interactive app that analyzes your voice to playfully determine if you are telling the truth or a lie. Using on-device artificial intelligence, it detects emotional tone in speech and delivers instant feedback — all without needing an internet connection. Whether you're hanging out with friends, playing games at a party, or just curious, Voice Lie Detector offers a unique and entertaining experience for all ages. How it works: Tap "Start" to begin voice recording Say anything you want Tap "Stop" to end recording The app analyzes your voice emotion and gives you a "Truth" or "Lie" result Features: Uses offline machine learning to detect voice emotion No data is sent to the cloud — fully private Works without internet connection Simple and intuitive design Great for parties, icebreakers, and pranks This app is designed for entertainment purposes only and does not provide real lie detection capabilities. Use it to enjoy fun moments and social games with friends and family. Download Voice Lie Detector now and start testing your truthfulness — or have fun challenging others.
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
expo-av
react-navigation
TypeScript
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.
