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
HelloCity, Your Local AI
your personalized, localized ai concierge
Free · In-app purchases
PRICE
Free
In-app purchases
BUSINESS MODEL
Freemium
No overall Grossing estimate available
RATING
★ 4.5
14 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 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 HelloCity, Your Local AI: 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
Incorporate user-generated content and reviews.
Assumption to check: Limited local recommendations compared to competitors.
Validate with people who use this workflow before building.
Hypothesis 2
Allow users to save recommendations for offline access.
Assumption to check: No offline functionality.
Validate with people who use this workflow before building.
Hypothesis 3
Provide clearer descriptions of premium features.
Assumption to check: In-app purchase structure not clearly explained.
Validate with people who use this workflow before building.
Hypothesis 4
Implement customizable notification settings.
Assumption to check: Notifications may overwhelm users.
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 personalized, localized ai concierge hellocity is your ai-powered guide to everything happening around you. get a personalized feed of events, places, experiences, and local news—all curated for your current location and tailored to your unique interests. no more searching across multiple apps. hellocity brings your city to life. meet emily – your ai assistant emily helps curate your personalized feed by learning what you love. during a quick chat when you first open the app, she'll ask about your preferences—food, nightlife, culture, activities, and more. based on your profile, emily assembles a daily feed of recommendations you'll actually enjoy. all-in-one local discovery platform find restaurants, bars, cafes, nightlife, live performances, art exhibits, concerts, festivals, cultural experiences, and local news—all in one place. view ratings, read details, get insider tips, and discover what makes each spot special. from trendy hotspots to neighborhood favorites. personalized for you, local to you hellocity adapts to wherever you are. whether you're home or traveling, get a location-based feed of events, places, and experiences perfectly matched to your taste. fresh recommendations delivered daily, powered by ai that learns what you love. everything happening in your city stay updated with personalized event recommendations spotlighting concerts, festivals, gallery openings, dining experiences, and cultural happenings. never miss out on what matters to you in your area. your city, your way save your favorite spots, build collections, and let emily refine your feed as she learns more about your preferences. your personalized local guide that gets smarter with every interaction. smarter than scrolling forget searching multiple apps and endless social media feeds. hellocity's ai aggregates everything you care about—events, places, experiences, news—into one intelligent feed designed just for you. terms of use (eula): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ privacy policy: https://www.hellocity.com/privacy-policy
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
Supabase
Axios
React Navigation
React Native Reanimated
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.
