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
Mavix.
Mavix is a supermarket discovery community for people who love finding what is new, limited, underrated, or unexpectedly worth it in real grocery aisles.
Free · In-app purchases
PRICE
Free
In-app purchases
BUSINESS MODEL
Freemium
No overall Grossing estimate available
RATING
★ 4.6
16 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/
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 Mavix.: map the core Food & Drink 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 partnerships with more local restaurants.
Assumption to check: Limited restaurant selection in some areas
Validate with people who use this workflow before building.
Hypothesis 2
Implement real-time tracking and estimated delivery time updates.
Assumption to check: Inconsistent delivery times
Validate with people who use this workflow before building.
Hypothesis 3
Enhance navigation with clearer labels and a more intuitive flow.
Assumption to check: Difficult navigation between screens
Validate with people who use this workflow before building.
Hypothesis 4
Introduce a recommendation algorithm based on user preferences and past orders.
Assumption to check: Lack of personalized recommendations
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
Mavix is a supermarket discovery community for people who love finding what is new, limited, underrated, or unexpectedly worth it in real grocery aisles. Share your latest finds from Trader Joe's, Costco, Whole Foods, Aldi, and other favorite stores. Post photos, quick notes, tags, and voice thoughts about seasonal snacks, freezer gems, bulk deals, hidden shelf picks, taste tests, and everyday products that deserve a second look. Browse a feed shaped by shoppers, not ads. See what others are trying, saving, recommending, or skipping, and use the community's discoveries as inspiration before your next grocery run. Whether you are hunting for limited flavors, planning a snack haul, comparing value, or just looking for something fun to try, Mavix gives every aisle a little more possibility. Save posts that catch your eye, revisit your own shopping timeline, and organize ideas into visual boards. Build a grocery mood board for your next trip, collect inspiration from the community, and keep track of the finds you want to remember when a seasonal product returns. Mavix turns supermarket browsing into a shared habit: discover together, share what you found, and bring better ideas to your next cart.
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
Zustand
react-navigation
react-native-maps
BUILD KIT DIFFICULTY
Expert
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.
