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
Smashburger - Burgers & Shakes
Download the official Smashburger app for the easiest way to order your favorite burgers for takeout or delivery
Free
PRICE
Free
No in-app purchases
BUSINESS MODEL
Free
No overall Grossing estimate available
RATING
★ 4.7
20,119 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.
First kit free with a verified email
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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 included
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 Smashburger - Burgers & Shakes: 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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Continue in Rork >
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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
Implement more flexible customization features for users to personalize their orders.
Assumption to check: Limited customization options for menu items
Validate with people who use this workflow before building.
Hypothesis 2
Provide real-time order tracking to enhance user experience.
Assumption to check: Long wait times for food preparation
Validate with people who use this workflow before building.
Hypothesis 3
Integrate better location services to improve nearby restaurant discovery.
Assumption to check: Difficulties in navigating to nearby locations
Validate with people who use this workflow before building.
Hypothesis 4
Introduce a loyalty program to incentivize repeat orders.
Assumption to check: Lack of rewards program
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
Download the official Smashburger app for the easiest way to order your favorite burgers for takeout or delivery. Newly designed for easy navigation and ordering. Find your favorite burgers, shakes, and more, and earn rewards! Smashburger App Features Include: - Mobile Ordering: Order food delivery and enjoy our fresh, made-to-order, never frozen Certified Angus Beef ® , delicious, grilled-to-perfection burgers, savory sides, hand-spun milkshakes, and other fast food staples - Pickup & Delivery: Order your favorite burger even faster with quick reorder for takeout or delivery - Customize Your Food: Customize any of our burgers to your heart’s content - Redeem Smashburger Points & Rewards: Sign up & collect points with every bite. It's fast, easy, and delicious, plus you can earn FREE items. - Best Food In Town: Top quality ingredients used in all our amazing creations from Smashburgers, Chicken sandwiches, Vegetarian burgers, fries, tater tots to hand-spun shakes, and refreshing drinks all available to order for takeout, pickup or delivery - Find Your Local Smashburger: Your closest restaurant is just a tap away to pick up or deliver your next burger meal
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
Axios
Zustand
Expo Location
React Native
Shadcn/UI
BUILD KIT DIFFICULTY
Not assessed in a Build Kit yet.
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.
