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
Hair Hub
Hair Hub is a swipe-style hair inspiration app that lets you browse hairstyles like a dating app, then plan and execute the looks you love
Free · In-app purchases
PRICE
Free
In-app purchases
BUSINESS MODEL
Freemium
No overall Grossing estimate available
RATING
★ 4.7
79 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.
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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 included14 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 Hair Hub: map the core Lifestyle 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
Expand the database with more diverse styles and user-uploaded content.
Assumption to check: Limited hairstyle options and styles to explore
Validate with people who use this workflow before building.
Hypothesis 2
Add forums or comment sections for user engagement.
Assumption to check: No community features for users to interact
Validate with people who use this workflow before building.
Hypothesis 3
Implement more robust filtering options for better user experience.
Assumption to check: Search functionality lacks advanced filtering
Validate with people who use this workflow before building.
Hypothesis 4
Simplify the subscription model and make it clearer to users.
Assumption to check: In-app purchase process can be confusing
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
Hair Hub is a swipe-style hair inspiration app that lets you browse hairstyles like a dating app, then plan and execute the looks you love. The app combines styling guidance, product recommendations, and educational tools to help users explore the full versatility of their hair and build a healthy, consistent routine while saving money. Whether you’re looking for everyday inspiration or planning your next big style, Hair Hub puts all the tools you need to care for and style your hair right at your fingertips. USE HAIR HUB FOR FREE Get started with Hair Hub at no cost! Enjoy up to 3 product searches per day, 30 swipes, 8 style saves, unlimited hairstyle searches, plus access to general tips, tutorials, and curated product lists. UPGRADE TO HAIR HUB PREMIUM Unlock the full Hair Hub experience! Premium users get everything in the free version, plus unlimited swipes and saves, an undo button, access to Hair Hub Labs, including the Protective Style Calculator, Product Results Tracker, Hair Goals Tracker, Braid Time Estimator, and exclusive Maintenance & Prep information to better plan, track, and care for your styles. Privacy Policy: https://thehairhubapp.wixsite.com/hair-hub/privacy Terms: https://thehairhubapp.wixsite.com/hair-hub/terms-of-service All images and videos in this app are sourced from publicly available platforms and are credited with a link to their original source. We do not claim ownership of these images or videos. If you see an image or video that belongs to you and would like it removed, please contact us at [email protected] and we will take it down promptly.
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
Redux
Axios
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.
