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
Human Benchmarks - Brain Test
Human benchmark App is the perfect way to challenge and improve your cognitive skills, and it offers a variety of tests and training modes to help you do just that
$0.99 · In-app purchases
PRICE
$0.99
In-app purchases
BUSINESS MODEL
Paid
No overall Grossing estimate available
RATING
★ 4.2
12 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 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 Human Benchmarks - Brain Test: 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
Introduce new challenges regularly to keep content fresh.
Assumption to check: Limited challenge variety can lead to user fatigue
Validate with people who use this workflow before building.
Hypothesis 2
Simplify purchase flow and clearly explain benefits.
Assumption to check: In-app purchases can be confusing or poorly communicated
Validate with people who use this workflow before building.
Hypothesis 3
Implement social sharing and challenge friends features.
Assumption to check: Lack of social features to engage users
Validate with people who use this workflow before building.
Hypothesis 4
Optimize game logic for better performance across devices.
Assumption to check: Performance issues with complex challenges on lower-end devices
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
Human benchmark App is the perfect way to challenge and improve your cognitive skills, and it offers a variety of tests and training modes to help you do just that. With the app's Chimp Test, you can measure your working memory and see how you stack up against others in your age group. The Verbal Memory and Sequence Memory tests are great for improving memory and cognitive skills. And with the Hearing test, you can check your ability to hear high-frequency sounds. The app also offers a Reaction Test, which is a great way to improve your reaction time and hand-eye coordination. And with the Number Memory test, you can work on your ability to remember and recall sequences of numbers. Whether you're looking to improve your cognitive skills for work, school, or just for personal development, Human benchmark App has something for everyone. With its personalized training plans and challenge modes, you can work on your weaknesses and build on your strengths. So why wait? Download Human benchmark App today and start improving your cognitive abilities!
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 Navigation
Zustand
Expo Constants
React Native Reanimated
Axios
BUILD KIT DIFFICULTY
Starter
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.
