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
IQ Masters: Brain Games, Tests
Boost your cognitive memory, logic and mind with brain teasers, tests & exercises.
Free · In-app purchases
PRICE
Free
In-app purchases
BUSINESS MODEL
Freemium
No overall Grossing estimate available
RATING
★ 4.6
65,548 ratings · Top 15%
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.
Build your own version
Build Kit
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A product spec, screen plans, and build steps for your coding agent.
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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 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 IQ Masters: Brain Games, Tests: map the core Education workflow, choose the smallest differentiated feature set, define the data and monetization boundaries, then prototype the riskiest user journey first.
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App evidence
Original App Store material. Ratings and screenshots describe the existing app, not proof of demand for your version.
Screenshots
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App Store description
Boost your cognitive memory, logic and mind with brain teasers, tests & exercises. Welcome to the IQ Masters, your go-to destination for a comprehensive mental workout! Elevate your cognitive and memory skills, explore your personality, and delve into the depths of your intelligence with brain tests & exercises, logic games and mind games. Push the limits of your brain! Engaging Brain Teasers, Exercises & Tests Improve your mind with a variety of thought-provoking challenges designed to sharpen your cognitive abilities, enhance problem-solving skills, and provide a fun and rewarding mental workout. From captivating brain teasers that tickle your intellect to interactive exercises that keep your mind agile, and insightful tests that unveil the mysteries of your cognitive strengths. Brain Training Games Embark on a strategic journey with Towers of Hanoi, test your precision in Draw One Line, savor the challenge of blending concoctions in Smoothie, and tackle the intricate puzzles of Connect the Dots. Experience these diverse game types in the IQ Masters Brain Training Games app for a stimulating mental workout. Content Types: Mental Health: - ADHD Test - Anxiety Types - Anxiety Level Test Cognitive & Personality: - EQ Test - Dominant Brain Type Test - Collectivistic vs Individualistic Thinking - Male Archetypes Journey to Self-Improvement IQ Masters is more than just an app; it's your partner in unlocking the full potential of your mind. Join us on this empowering journey of self-improvement, where each brain teasers, tests, exercises, and challenge brings you closer to a sharper, more agile, and resilient cognitive self. It is a comprehensive platform that goes beyond traditional brain training games, delving into aspects of mental health, cognitive abilities, personality tests, and intelligence tests. Whether you're looking to boost productivity, enhance self-awareness, or simply enjoy challenging brain exercises, IQ Masters Brain Training Games App is your passport to a sharper and more resilient mind. Download now and embark on a transformative journey towards a brighter, more intellectually empowered future. --- Disclaimer: This app provides informational and entertainment content related to cognitive skills, personality insights, and mental wellness. The tests and results are intended for self-reflection and general informational purposes only and are not a substitute for professional medical advice, diagnosis, or treatment. Always seek the advice of a qualified healthcare professional with any questions regarding a medical or mental health condition before making any medical decisions. Privacy Policy: https://static.iqmasters.app/privacy-en.html Terms of Use: https://static.iqmasters.app/terms-conditions-en.html
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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 diverse game types and regular updates.
Assumption to check: Limited variety of games which may lead to user boredom.
Validate with people who use this workflow before building.
Hypothesis 2
Implement a cleaner, more organized UI design.
Assumption to check: Some users find the interface cluttered.
Validate with people who use this workflow before building.
Hypothesis 3
Provide clearer information on the benefits of premium features.
Assumption to check: In-app purchases can be frustrating if not clearly communicated.
Validate with people who use this workflow before building.
Hypothesis 4
Introduce social sharing options and friend challenges.
Assumption to check: Limited social features for competition.
Validate with people who use this workflow before building.
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
FastAPI
Zustand
@react-navigation/native
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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.
