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
Black Rock Coffee Bar App
The Black Rock Coffee Bar app is a convenient way to order ahead for pickup and delivery all while earning bolts and rewards! You'll earn bolts towards free drinks on all your purchases through the app.
Free
PRICE
Free
No in-app purchases
BUSINESS MODEL
Free
No overall Grossing estimate available
RATING
★ 4.7
1,703 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.
Build your own version
Build Kit
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A product spec, screen plans, and build steps for your coding agent.
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What's included17 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 Black Rock Coffee Bar App: 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
Implement a scheduling feature for orders.
Assumption to check: Long wait times for orders during peak hours
Validate with people who use this workflow before building.
Hypothesis 2
Offer customizable drink options and add-ons.
Assumption to check: Limited customization options for drinks
Validate with people who use this workflow before building.
Hypothesis 3
Enhance location-based features with better GPS integration.
Assumption to check: Difficulties in locating the nearest store
Validate with people who use this workflow before building.
Hypothesis 4
Simplify the rewards structure and make it more intuitive.
Assumption to check: Confusing loyalty rewards system
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
The Black Rock Coffee Bar app is a convenient way to order ahead for pickup and delivery all while earning bolts and rewards! You'll earn bolts towards free drinks on all your purchases through the app. Black Rock Rewards: Free medium drink* when you download the app and join Black Rock Rewards! Be sure to scan every time you visit a location to earn bolts on all your favorite drinks and food. When you are ready to claim your rewards, convert your bolts in the app for free drinks. Enjoy exclusive benefits while earning bolts on every purchase. Black Rock Reward members receive a free drink on their birthday when they provide their birthday upon registration. *Free medium drink offer valid for new reward members only. Reward will be loaded onto users account upon registration. 180 day expiration. Terms apply, visit br.coffee for more information. Pay in Store & Manage Gift Cards: Save time and earn rewards when you pay with the Black Rock app. Check your Black Rock gift card balance, add money and view past purchases. Send a Gift: Say thanks with a Black Rock digital eGift card in the app. Find a Store: See Black Rock Coffee Bar locations near you, get directions and hours.
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
Axios
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.
