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 Brain Training
Your brain is your most powerful tool - but are you using it to its full potential? IQ Brain Training is more than just an app or a game; it’s a personalized mental gym designed to sharpen your mind, boost your IQ, an...
Free · In-app purchases
PRICE
Free
In-app purchases
BUSINESS MODEL
Freemium
No overall Grossing estimate available
RATING
★ 4.5
267 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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Add to a Remix
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 included17 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 Brain Training: map the core Health & Fitness 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
Include more diverse challenges and frequent updates.
Assumption to check: Limited challenge variety leading to repetition
Validate with people who use this workflow before building.
Hypothesis 2
Offer more free content and a trial period for premium features.
Assumption to check: In-app purchases can hinder user experience
Validate with people who use this workflow before building.
Hypothesis 3
Implement leaderboards and social sharing options.
Assumption to check: Lack of social features for competitive play
Validate with people who use this workflow before building.
Hypothesis 4
Simplify design and improve navigation layout.
Assumption to check: User interface can feel cluttered
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
Your brain is your most powerful tool - but are you using it to its full potential? IQ Brain Training is more than just an app or a game; it’s a personalized mental gym designed to sharpen your mind, boost your IQ, and help you think faster. Whether you want to stay smart at work or keep your logic sharp for daily life, our adaptive training is built for you. We all experience "brain fog" or mental fatigue. Do you struggle with: - Forgetfulness: Walking into a room and forgetting why? - Distraction: Finding it hard to stay focused on one task? - Slow Thinking: Feeling like your logic isn't as quick as it used to be? - Mental Burnout: Overwhelmed by complex decisions and daily stress? How IQ Brain Training Solves Them Most brain apps give everyone the same tasks. We don’t. We start with a comprehensive test and survey to understand your unique cognitive profile. By analyzing your strengths and weaknesses in logic, memory, and speed, we build a personalized program that evolves as you do. We don't just give you a game; we give you a roadmap to a smarter mind. Key Features: - Personalized Assessment: Take our initial IQ survey to identify your "Brain Type." - Tailored Workouts: Receive a daily set of logic and mind exercises chosen specifically for your goals. - Adaptive Difficulty: Our smart AI senses when you improve and increases the challenge to keep you growing. - Performance Analytics: Track your IQ growth and cognitive speed with detailed progress charts. - Anytime, Anywhere: Quick 5-minute sessions designed to train your brain during your commute or coffee break. Stop settling for "good enough." Every mind has the capacity to grow, learn, and adapt. With consistent logic practice and smart training, you can build a more resilient, focused, and powerful brain. Ready to see how smart you really are? Download IQ Brain Training today, take your first test, and start your personalized journey to a better mind! Terms of Use and Privacy Policy: https://vnpublisher.com/privacy-policy.html EULA: 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
Axios
Victory Native
React Navigation
Firebase
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.
